US3164363A - Valve having seat-carrying flange - Google Patents

Valve having seat-carrying flange Download PDF

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US3164363A
US3164363A US254045A US25404563A US3164363A US 3164363 A US3164363 A US 3164363A US 254045 A US254045 A US 254045A US 25404563 A US25404563 A US 25404563A US 3164363 A US3164363 A US 3164363A
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blade
flow passage
body portion
main body
movement
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John L Williams
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0281—Guillotine or blade-type valves, e.g. no passage through the valve member

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  • a more specific object is to provide in a blade type gate valve in which the blade moves along a predetermined path, a removable flow passage member secured in a special manner in the body of the valve and having an elastomer seat which is specially formed so that it is not damaged because of the contact therewith of the fixed path blade.
  • a further object is to provide a wafer valve of the above type having a cast body.
  • FIG. 1 is an elevational view of the outlet end of a valve of the present invention, parts being broken away to better show certain features of the valve;
  • FIG. 2 is a vertical midsection taken along line 22 of FIG. 1;
  • FIG. 2A is an enlarged view of theportion of FIG. 2 indicated by the arrow leading from FIG. 2A to FIG. 2;
  • FIG. 3 is a fragmentary end elevational view of a modified form of the invention.
  • FIG. 4 is a vertical sectional view taken along line 4-4 of FIG. 3;
  • FIG. 5 is an enlarged view of the designated portion of FIG. 4;
  • FIG. 6 is a fragmentary end elevational view of another form of the invention.
  • FIG. 7 is a vertical sectional view taken along line 7-7 of FIG. 6.
  • the valve shown has a flat wafer type body 11 formed with a flow passage extending therethr-ough with an axis at P.
  • the inlet is to the right and the outlet to the left.
  • the body is also formed with a gate blade channel 13 or guideway intersecting the flow passage.
  • a gate blade 15 is movably received by the channel 13 and passes through an inverted packing gland 17 covered by my Patent Re. 24,735.
  • the blade is raised and lowered by means of a threaded stem 19 adjustably connected at 26 to the blade 15 and threadedly extending through a nut 21.
  • the nut carries a handwheel 23 and is rotatably mounted on the upper end of a two legged frame 25 shown in my Patent Des. 179,791.
  • the frame is bolted at 27 to the body 11.
  • An adjustable stop 29 is preferably provided on the upper end of the stem 19 to limit downward movement thereof. Turning the wheel 23 one way raises the blade 15 and turning it the other way lowers the blade.
  • the valve body 11 may be considered as comprising a cast flat wafer type main body portion 31 and a flow passage member 33.
  • the main body portion is formed with a bore 35 (FIG, 2A) provided with threads which threadedly receive the flow passage member 33.
  • the flow passage member 33 includes a tubular portion 37 formed on its inner end with an annular axially facing channel receiving an annular elastomer seat 39.
  • the seat has a rib 41 projecting beyond the flow passage members and being of rounded cross section for good sealing engagement with the blade 15.
  • the orientation of the seat 39 is determined by the tubular portion 37, but the location of the seat relative to the blade and main body portion is determined by a radial flange 4-3 formed as an integral extension of the tubular portion 37. This flange engages a face 45 formed on the main body portion to limit inward threading movement of the flow passage member.
  • portions of the flow passage member are so dimensioned that when the flange 33 engages the face 45, the seat rib 41 projects into the path of movement of the blade 15 to form a good seal with the rib.
  • the blade 15 has a semicircular lower end (FIG. 1) which has a small bevel 46 (FIG. 2A) on the outlet end so that the blade does not cut the seat 39.
  • the bevel is exaggerated in the drawings so that it will be visible.
  • the blade 15 has a width equal or slightly greater than the outer diameter of the seat 39. Thus when the' blade is closed, rib 41 engages margins of the blade at the lower end of the blade.
  • the channel 13 has a width slightly greater than the width of the blade and extends downwardly slightly below the tubular portion 37 of the flow passage member as best shown in FIG. 2A.
  • the inlet portion of the flow passage is formed by a frusto-conical surface 71 defining a radially inwardly tapeiing face on the main body portion.
  • the frusto-oonical surface 71 merges into a short cylindrical portion 73 having the same diameter as the inside of the flow passage member 33.
  • the frusto-conical surface provides clearance for the blade channel, assuring that stock fibers will not be trapped and accumulated in the lower end of the channel. When the blade is open, the fluid flowing through the valve may readily Wash any fibers away.
  • the main body portion is also formed with a plurality of lugs formed with threaded holes 86 to receive bolts, bolts 87 for the flange 81 being shown securing the pipe flange to the body.
  • the main body portion is also formed with a eavy boss or rib 88 around the upper portion thereof on which is mounted the frame 25 and the bolts for the box 17.
  • the body is also formed with a rib 89 fitting into the inverted box 17.
  • the main body portion is further formed with an annular face or seat 91 (FIG. 2A) obliquely related to the flow passage (shown at a 45 degree angle).
  • 93 fits around the tubular portion 37 of the flow passage member next to the flange 43 and is pressed by the flange against the face or seat 91 to form a fluid seal between the main body portions 31 and the flow passagemember 33.
  • One or more gaskets may be used between the flange 43 and the face 45 to regulate the amount of projection of the rib 41 into the path of movement of the blade 17.
  • valve is that either a circular or an oval opening (vertically elongate) may be cast in the flow passage member 33 to vary the capacity of the valve.
  • the outside of the member would be circular in either case.
  • the rib 41 would be compressed approximately 1 of an inch prior to engagement of the blade with the wedges 75, and approximately of an inch after such engagement.
  • FIGS. 3, 4 and 5 show a modified form of the invention in which the valve body 11a comprises a main body portion 31a and a flow passage member 33a.
  • the flow passage member has a tubular flow passage portion having a light press fit in a plain bore 35a which is formed in the body portion 31a.
  • the body portion 31a is formed with a recess MP2 to accommodate the flange portion 43a of the member 330.
  • the depth of the recess 102 is such that the face-to-face dimension a (FIG. 4) of the valve is the same as a similar valve not so recessed and having two plain faces.
  • the flow member 33a is held in place by three screws or bolts Hi3 which are equally distributed about the periphery of the member 33a.
  • the peripheral margin of the flange portion 43a is provided with three dished recesses lllS to accommodate the heads of the screws 1%.
  • the tubular flow passage portion of the flow passage member 33a is provided on its inner end with an annular
  • a circular elastomer sealing member 3% has a body portion secured in the groove on member 33a and has a blade engaging portion 41a projecting into the path or plane of movement of the blade 15a to be engaged by saidblade and be compressed by such engagement so as to form a seal with said blade.
  • the blade engaging portion 41a is of lesser width than the body portion of the sealing member 3% and. is disposedintermedi'ate the inner and outer edges of said body portion Thus the blade engaging portion 41a is surrounded .by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it.
  • the blade engaging portion 41a is rounded or of convex semicircular form in cross section for camrning contact with the blade 15a.
  • the blade has a slight bevel 45a for camming contact with the blade engaging portion 41a of said sealing member.
  • the groove in the tubular flow passage portion is of dovetail form and the body portion of the sealing memher is of regular trapezoidal form in cross section to fit in the groove and be retained in place.
  • FIGS. 6 and 7 show another modified form of the inventlon which is basically like the FIGS. 35 form, except that the flange portion 43b of the flow member 33! is formed with countersunk holes to receive and accommodate the screws l ifab. The holes are drilled after the flow passage member is pressed into place.
  • the advantage of the FEGS. 3-5 form over the FIGS. 6 and 7 form is that there is less likelihood of leakage across the face of the flange portion 43a than across the flange portion 4315 because the recesses 10S occupy less radial distance of the flange 43a than do the countersunk holes for the flange portion 43b.
  • a valve comprising a body having a flow passage intersecting a gate blade channel
  • a gate blade movable in said channel between an opened and a closed position and projecting from said body
  • said body including a main body portion and a removable flow passage member
  • said flow passage member including a tubular flow passage portion
  • said main body portion having a bore in which said tubular flow passage removably fits
  • tubular flow passage portion defining part of said flow passage
  • said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion
  • tubular flow passage portion terminating short of the plane of movement of said blade
  • tubular flow passage portion having an annular groove formed on its inner end
  • a circular elastomer sealing member having a body portron fitting in said groove and having a blade engagmg portion projecting into the plane of movement of said blade to engage said blade and be compressed thereby to form a seal with said blade
  • said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of suchbody portion so that said blade engaging portron is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it,
  • said portion being rounded for cumming contact with said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutual camming contact with said rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of wear on the latter despite the predetermined plane of movement of said blade.
  • a valve comprising a body having a flow passage intersecting a gate blade channel
  • a gate blade movable in said channel between an opened and a closed position and projecting from said body
  • said body including a main body portion and a removable flow passage member
  • said flow passage member including a tubular flow passage portion
  • said main body portion having a bore in which said tubular flow passage removably fits
  • tubular flow passage portion defining part of said flow passage
  • said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion
  • tubular flow passage portion terminating short of the plane of movement of said blade
  • tubular flow passage portion having an annular groove formed on its inner end
  • a circular elastomer sealing member havinga body portion fitting in said groove and having a blade engaging portion projecting into the plane of movement of said blade to engage said blade and be compressed thereby to form a seal with said blade
  • said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of such body portion so that said blade engaging portion is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it,
  • said portion being rounded for camming contact-with said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutual camming contact with said rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of wear on the latter despite the predetermined plane of movement of said blade,
  • said main body portion having an outward facing surface adjacent but in spaced relation to said corner and between which and said corner said O-ring is compressed in sealing engagement with said flow passage member and said main body portion.
  • a valve comprising a body having a flow passage intersecting a gate blade channel
  • a gate blade movable in said channel between an opened and a closed position and projecting from said body
  • said body including a main body portion and a removable fiow passage member
  • said flow passage member including a tubular flow passage portion
  • said main body portion having a bore in which said tubular flow passage has a light press fit to form 'a seal with the walls of said bore
  • tubular flow passage portion defining part of said flow passage
  • said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion
  • tubular flow passage portion terminating short of the plane of movement of said blade
  • tubular flow passage portion having an annular groove formed on its inner end
  • a circular elastomer sealing member having a body portion fitting in said groove and having a blade engaging portion projecting into the plane of movement of said blade to engage said blade and be compressed thereby to form a seal with said blade
  • said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of such body portion so that said blade engaging portion is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it,
  • said portion being rounded for camming contact with said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutual camming contact with said rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of wear on the latter despite the predetermined plane of movement of said blade,
  • said threaded means comprising a plurality of threaded elements
  • said main body portion having threaded holes receiving said threaded elements
  • said flange portion being recessed to accommodate said heads so that the outer surfaces of said heads are disposed inwardly of the outer face of said flange portion.
  • a valve comprising a body having a flow passage intersecting a gate blade channel
  • a gate blade movable in said channel between an opened and a closed position and projecting from said body
  • said body including a main body portion and a removable flow passage member
  • said flow passage member including a tubular flow passage portion
  • said main body portion having a bore in which said tubular flow passage has a light press fit to form a seal with the walls of said bore
  • tubular flow passage portion defining part of said flow passage
  • said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion
  • tubular flow passage portion terminating short of the plane of movement of said blade
  • tubular flow passage portion having an annular groove formed on its inner end
  • a circular elastomer sealing. member having a body portion fitting in said groove and having a blade engaging portion projecting into the plane of movement of said blade'to engage said blade and be compressed thereby to form a seal with said blade,
  • said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of such body portion so that. said blade engaging portion is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally withoutdanger of rupturing it,
  • said portion being rounded for camming contact
  • said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutualcamming contact
  • Withsaid rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of Wear on the latter despite the predetermined plane of movement of said blade
  • said threaded means comprising a plurality of threaded elements, a
  • said main body portion having threaded holes receiving said threaded elements
  • said flange portion being recessed to accommodate said heads so that the outer surfaces of said heads are disposed inwardly of the outer face of said flange portion,

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  • General Engineering & Computer Science (AREA)
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Description

Jan. 5, 1965 J. 1.. WILLIAMS 3,164,353
VALVE HAVING SEAT-CARRYING FLANGE Filed Jan. 24, 1965 2 Sheets-Sheet l INVENTOR.
John L. Williams Buck/70m, Cheofham 8 B/ore AT TORNEYS 1965 J. L. WILLIAMS 3,164,363
VALVE HAVING SEAT-CARRYING FLANGE Filed Jan. 24, 1963 2' Sheets-Sheet 2 li lla Fig. 7
JOHN L. WILLIAMS m vavro/a Br I Fig 6 4 a/mom, 51.01%, KLAROU/ST a SPAR/(MAN ATTORNEYS United States Patent 3,164,363 VALVE HAVING SEAT-CARRYING FLANGE John L. Williams, R0. 162, Oswego, Greg. Filed Jan. 24, 1963, Ser. No. 254,045 4 Claims. (Cl. 251328) This invention relates to blade type gate valves and particularly to blade type gate valves having replaceable elastomer seats. This application includes the subject matter of my prior copending application entitled Valve Having Seat-Carrying Flange, Serial No. 90,830, filed February 21, 1961, now abandoned, and is a continuationin-part thereof.
There is an increasing demand for and it is a main object of the present invention to provide a low cost blade type gate valve having a removable elastomer seat.
A more specific object is to provide in a blade type gate valve in which the blade moves along a predetermined path, a removable flow passage member secured in a special manner in the body of the valve and having an elastomer seat which is specially formed so that it is not damaged because of the contact therewith of the fixed path blade.
A further object is to provide a wafer valve of the above type having a cast body.
Various other objects of the invention will be apparent from the following description taken in connection with the accompanying drawings wherein:
FIG. 1 is an elevational view of the outlet end of a valve of the present invention, parts being broken away to better show certain features of the valve;
FIG. 2 is a vertical midsection taken along line 22 of FIG. 1;
FIG. 2A is an enlarged view of theportion of FIG. 2 indicated by the arrow leading from FIG. 2A to FIG. 2;
FIG. 3 is a fragmentary end elevational view of a modified form of the invention;
FIG. 4 is a vertical sectional view taken along line 4-4 of FIG. 3;
FIG. 5 is an enlarged view of the designated portion of FIG. 4; v
FIG. 6 is a fragmentary end elevational view of another form of the invention; and
FIG. 7 is a vertical sectional view taken along line 7-7 of FIG. 6.
Introductory Matter Referring to the drawings, the valve shown has a flat wafer type body 11 formed with a flow passage extending therethr-ough with an axis at P. In FIG. 2, the inlet is to the right and the outlet to the left. The body isalso formed with a gate blade channel 13 or guideway intersecting the flow passage. A gate blade 15 is movably received by the channel 13 and passes through an inverted packing gland 17 covered by my Patent Re. 24,735.
The blade is raised and lowered by means of a threaded stem 19 adjustably connected at 26 to the blade 15 and threadedly extending through a nut 21. 'The nut carries a handwheel 23 and is rotatably mounted on the upper end of a two legged frame 25 shown in my Patent Des. 179,791. The frame is bolted at 27 to the body 11.
An adjustable stop 29 is preferably provided on the upper end of the stem 19 to limit downward movement thereof. Turning the wheel 23 one way raises the blade 15 and turning it the other way lowers the blade.
Specific Consideration The valve body 11 may be considered as comprising a cast flat wafer type main body portion 31 and a flow passage member 33. The main body portion is formed with a bore 35 (FIG, 2A) provided with threads which threadedly receive the flow passage member 33.
The flow passage member 33 includes a tubular portion 37 formed on its inner end with an annular axially facing channel receiving an annular elastomer seat 39. The seat has a rib 41 projecting beyond the flow passage members and being of rounded cross section for good sealing engagement with the blade 15.
The orientation of the seat 39 is determined by the tubular portion 37, but the location of the seat relative to the blade and main body portion is determined by a radial flange 4-3 formed as an integral extension of the tubular portion 37. This flange engages a face 45 formed on the main body portion to limit inward threading movement of the flow passage member. The various,
portions of the flow passage member are so dimensioned that when the flange 33 engages the face 45, the seat rib 41 projects into the path of movement of the blade 15 to form a good seal with the rib.
The blade 15 has a semicircular lower end (FIG. 1) which has a small bevel 46 (FIG. 2A) on the outlet end so that the blade does not cut the seat 39. The bevel is exaggerated in the drawings so that it will be visible.
The blade 15 has a width equal or slightly greater than the outer diameter of the seat 39. Thus when the' blade is closed, rib 41 engages margins of the blade at the lower end of the blade.
The channel 13 has a width slightly greater than the width of the blade and extends downwardly slightly below the tubular portion 37 of the flow passage member as best shown in FIG. 2A. The inlet portion of the flow passage is formed by a frusto-conical surface 71 defining a radially inwardly tapeiing face on the main body portion. The frusto-oonical surface 71 merges into a short cylindrical portion 73 having the same diameter as the inside of the flow passage member 33.
The frusto-conical surface provides clearance for the blade channel, assuring that stock fibers will not be trapped and accumulated in the lower end of the channel. When the blade is open, the fluid flowing through the valve may readily Wash any fibers away.
A pair of wedges 75, one of which is shown in FIGS.
1 and 2, is provided on the main body portion in posi- '83 and thickened flange portions 8d. The main body portion is also formed with a plurality of lugs formed with threaded holes 86 to receive bolts, bolts 87 for the flange 81 being shown securing the pipe flange to the body. The main body portion is also formed with a eavy boss or rib 88 around the upper portion thereof on which is mounted the frame 25 and the bolts for the box 17. The body is also formed with a rib 89 fitting into the inverted box 17.
The main body portionis further formed with an annular face or seat 91 (FIG. 2A) obliquely related to the flow passage (shown at a 45 degree angle). 93 fits around the tubular portion 37 of the flow passage member next to the flange 43 and is pressed by the flange against the face or seat 91 to form a fluid seal between the main body portions 31 and the flow passagemember 33.
One or more gaskets may be used between the flange 43 and the face 45 to regulate the amount of projection of the rib 41 into the path of movement of the blade 17.
An O-ring a groove.
When the rib wears, removal of one or more gaskets would cause the rib to project farther toward the blade for proper contact.
An advantage of the valve is that either a circular or an oval opening (vertically elongate) may be cast in the flow passage member 33 to vary the capacity of the valve. The outside of the member would be circular in either case.
In a typical six-inch valve of the present invention, the rib 41 would be compressed approximately 1 of an inch prior to engagement of the blade with the wedges 75, and approximately of an inch after such engagement.
A plurality of notches ml or lugs, preferably four, is provided on the edge of the flange 43 to facilitate engagement by a tool when inserting or removing the flow passage member. 7
I FIGS. 3, 4 and 5 show a modified form of the invention in which the valve body 11a comprises a main body portion 31a and a flow passage member 33a. The flow passage member has a tubular flow passage portion having a light press fit in a plain bore 35a which is formed in the body portion 31a.
The body portion 31a is formed with a recess MP2 to accommodate the flange portion 43a of the member 330. The depth of the recess 102 is such that the face-to-face dimension a (FIG. 4) of the valve is the same as a similar valve not so recessed and having two plain faces.
It follows from the above that l have provided a method of converting an existing plain face wafer valve to a wafer valve having a separable flange face without altering the face-to-face dimension of the valve. Thus a valve which is converted in accordance with my teachings can be replaced in the same installation from which it was removed, without requiring alterations in the installation to accommodate the converted valve.
The flow member 33a is held in place by three screws or bolts Hi3 which are equally distributed about the periphery of the member 33a. The peripheral margin of the flange portion 43a is provided with three dished recesses lllS to accommodate the heads of the screws 1%.
after, the threaded holes for the screws 1% are provided in the lugs 85ain register with the recesses H35. Then the screws are threaded into place, and because of the recesses I05, the'heads of the screws will be disposed inwardly of the outer face of the flange 43a. Thus, the heads of the screws do not interfere with the proper faceto-face contact between the flow member 33:: and the flange of an-adjacent pipe (not shown).
While an O-ring seal is not shown in FIGS. 3-5 for the member 33a, one is contemplated, if required. However, thepress fit of the flow passage member within the main body portion 31a is' sufiicient in a number of installations to prevent leakage.
The tubular flow passage portion of the flow passage member 33ais provided on its inner end with an annular A circular elastomer sealing member 3% has a body portion secured in the groove on member 33a and has a blade engaging portion 41a projecting into the path or plane of movement of the blade 15a to be engaged by saidblade and be compressed by such engagement so as to form a seal with said blade.
The blade engaging portion 41a is of lesser width than the body portion of the sealing member 3% and. is disposedintermedi'ate the inner and outer edges of said body portion Thus the blade engaging portion 41a is surrounded .by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it.
His further pointed out that the blade engaging portion 41a is rounded or of convex semicircular form in cross section for camrning contact with the blade 15a. The blade has a slight bevel 45a for camming contact with the blade engaging portion 41a of said sealing member. Thus there is mutual camrning contact between the blade 15a and the blade engaging portion 410 so that repeated engagement between said blade and sealing member will cause only a minimum wear on the latter despite the predetermined plane of movement of said blade.
The groove in the tubular flow passage portion is of dovetail form and the body portion of the sealing memher is of regular trapezoidal form in cross section to fit in the groove and be retained in place.
FIGS. 6 and 7 show another modified form of the inventlon which is basically like the FIGS. 35 form, except that the flange portion 43b of the flow member 33!) is formed with countersunk holes to receive and accommodate the screws l ifab. The holes are drilled after the flow passage member is pressed into place.
The advantage of the FEGS. 3-5 form over the FIGS. 6 and 7 form is that there is less likelihood of leakage across the face of the flange portion 43a than across the flange portion 4315 because the recesses 10S occupy less radial distance of the flange 43a than do the countersunk holes for the flange portion 43b.
'While I have shown the concepts of my invention embodied in a wafer type gate blade valve, the concepts could be embodied in other gate blade valves, such as for instance a digester type gate blade valve.
Having described the invention in what is considered to be the preferred embodiment thereof, it is desired that it be understood that the invention is not to be limited other than by the provisions of the following claims.
I claim:
1. A valve comprising a body having a flow passage intersecting a gate blade channel,
a gate blade movable in said channel between an opened and a closed position and projecting from said body,
a packing assembly around said blade at the place it projects from said body and establishing a predetermined plane of movement for said blade,
said body including a main body portion and a removable flow passage member,
said flow passage member including a tubular flow passage portion,
said main body portion having a bore in which said tubular flow passage removably fits,
said tubular flow passage portion defining part of said flow passage,
said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion,
threaded means for securing said flow passage member to said main body portion,
said tubular flow passage portion terminating short of the plane of movement of said blade,
said tubular flow passage portion having an annular groove formed on its inner end,
a circular elastomer sealing member having a body portron fitting in said groove and having a blade engagmg portion projecting into the plane of movement of said blade to engage said blade and be compressed thereby to form a seal with said blade,
said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of suchbody portion so that said blade engaging portron is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it,
said portion being rounded for cumming contact with said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutual camming contact with said rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of wear on the latter despite the predetermined plane of movement of said blade.
2. A valve comprising a body having a flow passage intersecting a gate blade channel,
a gate blade movable in said channel between an opened and a closed position and projecting from said body,
a packing assembly around said blade at the place it projects from said body and establishing a predetermined plane of movement for said blade,
said body including a main body portion and a removable flow passage member,
said flow passage member including a tubular flow passage portion,
said main body portion having a bore in which said tubular flow passage removably fits,
said tubular flow passage portion defining part of said flow passage,
said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion,
threaded means for securing said flow passage member to said main body portion,
said tubular flow passage portion terminating short of the plane of movement of said blade,
said tubular flow passage portion having an annular groove formed on its inner end,
a circular elastomer sealing member havinga body portion fitting in said groove and having a blade engaging portion projecting into the plane of movement of said blade to engage said blade and be compressed thereby to form a seal with said blade,
said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of such body portion so that said blade engaging portion is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it,
said portion being rounded for camming contact-with said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutual camming contact with said rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of wear on the latter despite the predetermined plane of movement of said blade,
said tubular flow passage portion and said flange portion defining a corner, 7
an O-ring seal fitting around said tubular flow passage portion at said corner, a
said main body portion having an outward facing surface adjacent but in spaced relation to said corner and between which and said corner said O-ring is compressed in sealing engagement with said flow passage member and said main body portion.
3. A valve comprising a body having a flow passage intersecting a gate blade channel,
a gate blade movable in said channel between an opened and a closed position and projecting from said body,
a packing assembly around said blade at the place it projects from said body and establishing a predetermined plane of movement for said blade,
said body including a main body portion and a removable fiow passage member,
said flow passage member including a tubular flow passage portion,
said main body portion having a bore in which said tubular flow passage has a light press fit to form 'a seal with the walls of said bore,
said tubular flow passage portion defining part of said flow passage,
said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion,
threaded means for securing said flow passage member to said main body portion,
said tubular flow passage portion terminating short of the plane of movement of said blade,
said tubular flow passage portion having an annular groove formed on its inner end,
a circular elastomer sealing member having a body portion fitting in said groove and having a blade engaging portion projecting into the plane of movement of said blade to engage said blade and be compressed thereby to form a seal with said blade,
said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of such body portion so that said blade engaging portion is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally without danger of rupturing it,
said portion being rounded for camming contact with said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutual camming contact with said rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of wear on the latter despite the predetermined plane of movement of said blade,
said threaded means comprising a plurality of threaded elements,
said main body portion having threaded holes receiving said threaded elements,
said elements having heads engaging said flange portion,
said flange portion being recessed to accommodate said heads so that the outer surfaces of said heads are disposed inwardly of the outer face of said flange portion.
4. A valve comprising a body having a flow passage intersecting a gate blade channel,
a gate blade movable in said channel between an opened and a closed position and projecting from said body,
a packing assembly around said blade at the place it projects from said body and establishing a predetermined plane of movement for said blade,
said body including a main body portion and a removable flow passage member,
said flow passage member including a tubular flow passage portion,
said main body portion having a bore in which said tubular flow passage has a light press fit to form a seal with the walls of said bore,
said tubular flow passage portion defining part of said flow passage,
said flow passage member including an annular flange portion bearing against said main body portion outwardly of said tubular flow passage portion,
threaded means for securing said flow passage member to said main body portion,
said tubular flow passage portion terminating short of the plane of movement of said blade,
said tubular flow passage portion having an annular groove formed on its inner end,
a circular elastomer sealing. member having a body portion fitting in said groove and having a blade engaging portion projecting into the plane of movement of said blade'to engage said blade and be compressed thereby to form a seal with said blade,
said blade engaging portion being of lesser width than the body portion of said sealing member and being disposed intermediate the inner and outer edges of such body portion so that. said blade engaging portion is surrounded by a matrix of elastomer material so that said blade engaging portion can readily be deformed laterally withoutdanger of rupturing it,
said portion being rounded for camming contact With said blade and said blade having a slight bevel on the edge thereof next to said sealing member for mutualcamming contact Withsaid rounded portion so that repeated engagements between said blade and sealing member will cause only a minimum of Wear on the latter despite the predetermined plane of movement of said blade,
said threaded means comprising a plurality of threaded elements, a
said main body portion having threaded holes receiving said threaded elements,
said elements having heads engaging said flange portion,
said flange portion being recessed to accommodate said heads so that the outer surfaces of said heads are disposed inwardly of the outer face of said flange portion,
the shank portions of said threaded elements being disposed outwardly of the peripheral edge of said flange portion.
References Cited in the file of this patent UNITED STATES PATENTS 2,787,438 Bauer Apr. 2, 1957 2,832,564 Williams Apr. 29, 1 58 2,843,920 Swartz et al July 22, 1958 2,869,221 Siepmann Ian. 26, 1955

Claims (1)

1. A VALVE COMPRISING A BODY HAVING A FLOW PASSAGE INTERSECTING A GATE BLADE CHANNEL, A GATE BLADE MOVABLE IN SAID CHANNEL BETWEEN AN OPENED AND A CLOSED POSITION AND PROJECTING FROM SAID BODY, A PACKING ASSEMBLY AROUND SAID BLADE AT THE PLACE IT PROJECTS FROM SAID BODY AND ESTABLISHING A PREDETERMINED PLANE OF MOVEMENT FOR SAID BLADE, SAID BODY INCLUDING A MAIN BODY PORTION AND A REMOVABLE FLOW PASSAGE MEMBER, SAID FLOW PASSAGE MEMBER INCLUDING A TUBULAR FLOW PASSAGE PORTION, SAID MAIN BODY PORTION HAVING A BORE IN WHICH SAID TUBULAR FLOW PASSAGE REMOVABLY FITS, SAID TUBULAR FLOW PASSAGE PORTION DEFINING PART OF SAID FLOW PASSAGES, SAID FLOW PASSAGE MEMBER INCLUDING AN ANNULAR FLANGE PORTION BEARING AGAINST SAID MAIN BODY PORTION OUTWARDLY OF SAID TUBULAR FLOW PASSAGE PORTION, THREADED MEANS FOR SECURING SAID FLOW PASSAGE MEMBER TO SAID MAIN BODY PORTION, SAID TUBULAR FLOW PASSAGE PORTION TERMINATING SHORT OF THE PLANE OF MOVEMENT OF SAID BLADE, SAID TUBULAR FLOW PASSAGE PORTION HAVING AN ANNULAR GROOVE FORMED ON ITS INNER END, A CIRCULAR ELASTOMER SEALING MEMBER HAVING A BODY PORTION FITTING IN SAID GROOVE AND HAVING A BLADE ENGAGING PORTION PROJECTING INTO THE PLANE OF MOVEMENT OF SAID BLADE TO ENGAGE SAID BLADE AND BE COMPRESSED THEREBY TO FORM A SEAL WITH SAID BLADE, SAID BLADE ENGAGING PORTION BEING OF LESSER WIDTH THAN THE BODY PORTION OF SAID SEALING MEMBER AND BEING DISPOSED INTERMEDIATE THE INNER AND OUTER EDGES OF SUCH BODY PORTION SO THAT SAID BLADE ENGAGING PORTION IS SURROUNDED BY A MATRIX OF ELASTOMER MATERIAL SO THAT SAID BLADE ENGAGING PORTION CAN READILY BE DEFORMED LATERALLY WITHOUT DANGER OF RUPTURING IT, SAID PORTION BEING ROUNDED FOR CAMMING CONTACT WITH SAID BLADE AND SAID BLADE HAVING A SLIGHT BEVEL ON THE EDGE THEREOF NEXT TO SAID SEALING MEMBER FOR MUTUAL CAMMING CONTACT WITH SAID ROUNDED PORTION SO THAT REPEATED ENGAGEMENTS BETWEEN SAID BLADE AND SEALING MEMBER WILL CAUSE ONLY A MINIMUM OF WEAR ON THE LATTER DESPITE THE PREDETERMINED PLANE OF MOVEMENT OF SAID BLADE.
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710816A (en) * 1970-10-12 1973-01-16 D Prince Knife gate valve
US3993092A (en) * 1975-09-17 1976-11-23 New Concepts, Inc. Gate valve with replaceable liner
US4033550A (en) * 1974-02-08 1977-07-05 Wheatley Company Water gate valve
US4051863A (en) * 1975-09-17 1977-10-04 New Concepts, Inc. Gate valve with replaceable liner
US4347865A (en) * 1978-04-13 1982-09-07 Exxon Research & Engineering Co. Fabricated gate valves
EP0114278A1 (en) * 1982-12-27 1984-08-01 Bühler-MIAG GmbH Shut-of device for pneumatic transporting systems for the transport of pourable bulk materials
US4534540A (en) * 1983-05-27 1985-08-13 Voroshilovgradsky Mashinostroitelny Institut Gate valve
US4759529A (en) * 1987-05-20 1988-07-26 Maxon Corporation Pre-loaded valve follower sealing apparatus
US4951919A (en) * 1989-04-18 1990-08-28 Newcon Company Seal for gate valve liners
EP1912000A1 (en) * 2006-10-13 2008-04-16 Hawle Armaturen GmbH Insert device for insertion into a duct or shut-off valve and pertinent valve equipped with this
US20220128155A1 (en) * 2019-03-04 2022-04-28 Stephen Janse VAN RENSBURG Rotor gate valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787438A (en) * 1954-03-29 1957-04-02 Exxon Research Engineering Co Slide valve structure
US2832564A (en) * 1955-10-10 1958-04-29 John L Williams Gate valve
US2843920A (en) * 1954-02-24 1958-07-22 Sloan Valve Co Methods of finishing valve bodies
US2869221A (en) * 1952-10-21 1959-01-20 Stabl Armaturen G M B H Method of producing valve housings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869221A (en) * 1952-10-21 1959-01-20 Stabl Armaturen G M B H Method of producing valve housings
US2843920A (en) * 1954-02-24 1958-07-22 Sloan Valve Co Methods of finishing valve bodies
US2787438A (en) * 1954-03-29 1957-04-02 Exxon Research Engineering Co Slide valve structure
US2832564A (en) * 1955-10-10 1958-04-29 John L Williams Gate valve

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710816A (en) * 1970-10-12 1973-01-16 D Prince Knife gate valve
US4033550A (en) * 1974-02-08 1977-07-05 Wheatley Company Water gate valve
US3993092A (en) * 1975-09-17 1976-11-23 New Concepts, Inc. Gate valve with replaceable liner
US4051863A (en) * 1975-09-17 1977-10-04 New Concepts, Inc. Gate valve with replaceable liner
US4112969A (en) * 1975-09-17 1978-09-12 New Concepts, Inc. Replaceable one piece liner for a gate valve
US4347865A (en) * 1978-04-13 1982-09-07 Exxon Research & Engineering Co. Fabricated gate valves
EP0114278A1 (en) * 1982-12-27 1984-08-01 Bühler-MIAG GmbH Shut-of device for pneumatic transporting systems for the transport of pourable bulk materials
US4534540A (en) * 1983-05-27 1985-08-13 Voroshilovgradsky Mashinostroitelny Institut Gate valve
US4759529A (en) * 1987-05-20 1988-07-26 Maxon Corporation Pre-loaded valve follower sealing apparatus
US4951919A (en) * 1989-04-18 1990-08-28 Newcon Company Seal for gate valve liners
EP1912000A1 (en) * 2006-10-13 2008-04-16 Hawle Armaturen GmbH Insert device for insertion into a duct or shut-off valve and pertinent valve equipped with this
US20220128155A1 (en) * 2019-03-04 2022-04-28 Stephen Janse VAN RENSBURG Rotor gate valve

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