US3821968A - Control valve structure having double ports - Google Patents

Control valve structure having double ports Download PDF

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Publication number
US3821968A
US3821968A US32664073A US3821968A US 3821968 A US3821968 A US 3821968A US 32664073 A US32664073 A US 32664073A US 3821968 A US3821968 A US 3821968A
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Prior art keywords
valve
plug
cage
seat
outlet
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G Barb
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ANCHOR/DARLING VALVE COMPANY 919 CONESTOGA RD ROSEMONT PA 19010 A CORP OF
ACF Industries Inc
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ACF Industries Inc
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Assigned to ANCHOR/DARLING VALVE COMPANY, 919 CONESTOGA RD., ROSEMONT, PA 19010 A CORP. OF PA reassignment ANCHOR/DARLING VALVE COMPANY, 919 CONESTOGA RD., ROSEMONT, PA 19010 A CORP. OF PA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MUESCO, INC.
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00Means in valves for absorbing fluid energy, e.g. cushioning of opening or closure movement, eliminating of vibrations of the valve member
    • F16K47/04Means in valves for absorbing fluid energy, e.g. cushioning of opening or closure movement, eliminating of vibrations of the valve member for decreasing pressure or noise level, the throttle being incorporated in the closure member
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86493Multi-way valve unit
    • Y10T137/86718Dividing into parallel flow paths with recombining
    • Y10T137/86734With metering feature

Abstract

A control valve structure in which the flow of fluid from the inlet is divided into two separate streams and then recombined at the outlet. The control valve is of the globe-valve type having two opposed parts through which the fluid flows from the inlet, and the control valve includes two cylindrical valve portions thereon to control the flow of fluid through the two ports. The cylindrical valve portions are mounted on a common valve post in spaced relation to each other and are perforated to provide a restriction to the fluid flow, thereby converting some of the energy of the fluid stream to heat.

Description

United States Patent 1191 r [451 July 2, 1974 [54] CONTROL VALVE STRUCTURE HAVING 1,813,222 7/1931 Barrett 137/6253 X 2,918,087 12/1959 Curran 137/6253 DOUBLE PORTS Gayle E. Barb, Houston, Tex.
ACF Industries Incorporated, New York, NY.
Jan. 26, 1973 lnventor:
Assignee:
Filed:
Appl. No.:
US. Cl. l37/625.3, 251/210 Int. Cl. Fl6k 11/06 Field of Search 137/6253, 625.37, 625.38,
References Cited UNITED STATES PATENTS 7/1864 Noyes l37/625.38 4/1869 Gilbert l37/625.38 X 4/1931 Holden et a1. 251/210 Primary Examiner-Henry T. Klinksiek Attorney, Agent, or Firm-Eugene N. Riddle [5 7] ABSTRACT A control valve structure in which the flow of fluid from the inlet is divided into two separate streams and then recombined at the outlet. The control valve is of the globe-valve type having two opposed parts through which the fluid flows from the inlet, and the control valve includes two cylindrical valve portions thereon to control the flow of fluid through the two ports. The cylindrical valve portions are mounted on a common valve post in spaced relation to each other and are perforated to provide a restriction to the fluid flow, thereby converting some of the energy of the fluid stream to heat.
4 Claims, 5 Drawing Figures 76 r s2 w s 1 n 62 2 1' 60 15 5 i=3 M 56 78 79 54 9Z 90 56 12 et: 5533. :5 M
5 3, 2 2 I If I 64 l 70 700 252522232525: 70A
PATENYEDJUL 2 um I 3.821.988
saw 1 OF 2 FIG] C D m m M M I 4\ 7 a 00 0O 0 O O O O O O 00, o o o O 0 0000000 0 0 O 0 O 1 O O O O 0 000000 0 O O O O O O O OOOOOO ooooooOOOO 0000000000 00 omowo 000 PAIENTEDJuL 2:914
SHEET 2 [1F 2 CONTROL VALVE STRUCTURE HAVING DOUBLE PORTS BACKGROUND OF THE INVENTION A low noise level must be obtained in order to meet governmental and industry standards. Several methods have been advised for a reduction in noise levels, such as directing the flow of fluid through tortuous fluid passages with the direction of flow being changed. This technique also converts some of the energy of the fluid stream to heat. A plurality of perforated discs has also been provided heretofore for the flow of fluid therethrough. Perforated or slotted cages through which the fluid is directed have likewise been utilized heretofore. Multiple-orifice plates or discs placed downstream of a valve will reduce the pressure drop across the valve and reduce the discharge velocity. Flow passages of the multiple plates may be staggered or spaced so that flow does not jet straight through the plates. All such means have converted some of the energy of the fluid stream and reduce the tendency toward cavitation. Thus, excessive valve noise has been reduced or minimized by such previous arrangements.
DESCRIPTION OF THE PRESENT INVENTION The present invention introduces a large ratio of wetted area to flow area thus converting energy of the fluid stream to heat. This large ratio, i.e. wetted area to flow area, is provided by having an inlet leading to a pair of opposed ports. To control the flow of fluid through the opposed ports to the outlet, two cylindrical valve plug portions are mounted on a common post. The cylindrical valve plug portions have open lower ends and imperforate upper ends which seat about the opposed ports in closed position. The cylindrical valve plug portions are perforated so that in the open position of the valve the fluid flows through the perforated portions to the discharge outlet. The change in direction of the fluid as it flows through the perforated valve plug portions also converts energy of the fluid stream. This energy conversion tends to reduce cavitation and the resultant noise.
In the accompanying drawings, in which one of various possible embodiments of the invention is illustrated,
FIG. 1 is a sectional view of a control valve constructed in accordance with the invention, certain parts thereof shown in elevation, with the valve being in a closed position;
FIG. 2 is a sectional view generally similar to FIG. 1 but showing the valve plug member in an open position thereof with the fluid flow from the inlet through the upper and lower cylindrical portions and thence through the outlet;
FIG. 3 is an exploded view of the double port type valve plug forming the present invention and including the lower fixed cage structure;
FIG. 4 is a diagrammatic view showing the pattern or arrangement of the multiple openings in the fixed lower cage structure;
FIG. 5 is a diagrammatic view similar to FIG. 4 but showing the multiple openings in the identical upper and lower sections of the valve plug.
Referring now to the drawings for a better understanding of the invention, a control valve structure generally indicated and embodying the present invention includes a valve body generally indicated 11 having an inlet 12 and an outlet 14. Flanges 16 are provided adjacent inlet 12 and outlet 14 having suitable openings 18 adapted to receive bolts or the like for connecting an adjacent pipe section thereto. Valve body 11 has a lower flange 22 thereon. Suitable openings 24 in lower flange 22 receive bolts 26 for securing a bottom closure 28 fitting over an opening 29 in the lower end of valve body 11 to provide easy access to the interior of valve body 11. An upper flange 30 of valve body 11 has suitable bolt openings 32 therein which receive bolts 34 for securing a bonnet generally indicated 43. A valve actuator generally indicated 36 I may be suitably secured to bonnet 43.
A lower stem 38 has a valve plug generally indicated 40 connected thereto. An upper valve stem 42 is connected to lower valve stem 38. A suitable stuffing box is generally indicated 44. Upper stem 42 is secured to a diaphragm plate 46. A diaphragm 49 is clamped between an upper casing 48 and a lower casing 50 by bolts 52. A spring 53 contacts diaphragm plate 46.
Inlet 12 has a closed end 54 and a pair of opposed openings 56 and 58. An upper generally cylindrical valve seat member indicated 60 is threaded within opening 56 and has a seat 62 thereon. A lower generally cylindrical valve seat member or cage 64 is threaded within opening 58 and has a lower seat 66 thereon. Lower valve seat member 64 has a lower skirt or wall 70. Perforations or openings 70A, 70B, 70C, and 70D are formed in rings about skirt 70 and increase in size from the lower end of skirt 70 toward the upper end thereof. As a non-limiting example of openings 70A, 70B, 70C, 70D, openings 70A may comprise six rings of 96 openings each having a diameter of 3/32 inch and spaced 3.75 apart in each ring. Openings 70B comprise four rings of 96 openings each of one-eighth inch diameter 3.75 apart in each ring. Openings 70C comprise four rings of 96 openings each of five thirtyseconds inch diameter 3.75 apart in each ring. Openings 70D comprise five rings of 96 openings each of three-sixteenths inch diameter and 3.75 apart in each ring. Each ring is spaced approximately 0.20 inch from the adjacent ring. It is noted that openings 70A, 70B, 70C, and 70D are arranged in FIG. 4 in an inverted relation with respect to FIGS. l-3.
Valve plug 40 includes an upper plug portion generally indicated 76 and a lower plug portion generally indicated 78 connected by a post 79. Upper plug portion 76 includes an upper body 80 and alower skirt or wall 82 extending therefrom and having an open lower end.
Perforations or openings 84A, 84B, 84C, and 84D are I fonned in rings about skirt 82 and increase in size from the upper ring thereof to the lower ring thereof. As a non-limiting example of 84A, 84B, 84C, and 84D, openings 84A may comprise five rings of 96 openings each of five sixty-fourths inch diameter which are 3.75 apart. Openings 84B comprise four rings of 96 openings each of seven sixty-fourths inch diameter which are 3.75 apart. Openings 84C comprise five staggered rings of 96 openings each of nine sixty-fourths inch diameter which are 3.75 apart. Openings 84D comprise five staggered rings of 96 openings each of five thirtyseconds inch diameter which are 3.75 apart. Each ring from openings 84A to 84D is spaced approximately 0.20 inch from the adjacent ring.
Lower valve plug portion 78 includes an upper main body having a wall or skirt 92 extending therefrom and having an open lower end. Perforations or openings 94A-94D are formed in valve plug skirt 92 identical to those of 84A, 84B, 84C, and 84D.
In operation, as shown in FIG. 1 with valve plug member 40 in seated position, main body 80 is seated on seat 62 and main body 90 is seated on seat 66 to prevent the flow of fluid through valve 10. Upon the opening of valve plug 40 by diaphragm plate 46, diaphragm 49, and spring 53 exerting an upward movement on stem 42, valve plug portions 76 and 78 are moved to an open position as shown in FIG. 2 and fluid flows from inlet 12 simultaneously through openings 84A, 848,
84C, 84D, and 94A, 94B, 94C, and 94D. Openings 7 70A, 70B, 70C, and 70D are introduced in series with openings 94A, 94B, 94C, and 94D.
Valve 10 may be suitably employed with either gaseous or liquid fluids, such as steam or water, for exam-, ple. Further, the present invention may be suitably employed with a so-called reverse acting valve plug as contrasted with the present design which is a direct acting valve plug. A direct acting valve plug moves downwardly toward a closed position while a reverse acting valve plug moves downwardly toward an open position.
The valve plug of the present invention may be easilydesigned to move downwardly toward an open position, if desired.
What is claimed is:
l. A valve structure comprising, a body having an inlet and an outlet, said inlet having an end portion extending within said body and having aligned upper and lower annular valve ports communicating with said outlet, aligned upper and lower valve seats defining said valve ports, a valve plug structure mounted within said valve body having axially aligned integral upper and lower valve plug portions connected to a common post and adapted to seat on the respective upper and lower valve seats, said lower valve plug portion having a perforated cylindrical wall and an open lower end, the upper end of said lower valve plug portion being closed and adapted to seat on the lower valve seat in a closed position to prevent the flow of fluid therethrough, a fixed cage having an upper circumference forming the lower valve seat and a lower cylindrical perforated wall communicating with the outlet, said lower valve plug portion being received within the cage and covering at least a substantial portion of the perforated area of the fixed cage in a closed position, the perforated area of the lower plug portion and the perforated area of the cage which are exposed to fluid flow both increasing simultaneously in size upon movement of the lower plug portion toward an open position and said fluid first flowing through the perforations in said lower valve plug portion and then through the perforations in said cage to said outlet, and means to move said valve plug portions between open and closed positions relative to the valve ports.
2. A valve structure as set forth in claim 1 wherein the openings in each of said generally cylindrical walls are arranged in a plurality of spaced rings about the walls with the openings being of an increasing size from closed position toward full open position.
3. A valve structure asset forth in claim 1 wherein the openings in the perforated wall of said cage are of a decreasing size from a position adjacent the associated seat to a position remote from the associated seat.
4. A valve structure comprising, a body having an inlet and an outlet, said inlet having an end portion extending within said body and having a pair of aligned annular valve ports communicating with said outlet, a pair. of aligned valve seats defining said valve ports, a valve plug structure mounted within said valve body having a pair of axially aligned valve plug portions connected to a common post and adapted to seat on said valve seats, one of said valve plug portions having a perforated cylindrical wall and one open end, the other end of said valve plug portion being closed and adapted to seat on its associated valve seat in a closed position to prevent the flow of fluid therethrough, a fixed cage forming one of the valve seats and having a cylindrical perforated wall communicating with the outlet, said one valve plug portion being received within the cage and covering at least a substantial portion of the perforated area of the fixed cage in a closed position, the perforated area of said one plug portion and the'perforated area of the cage which are exposed to fluid flow both increasing simultaneously in size upon movement of said one plug portion toward an open position and said fluid first flowing through the perforations in said one valve plug portion and then through the perforations in said cage to said outlet, and means to move said valve plug portions between open and closed positions relative to the valve ports.

Claims (4)

1. A valve structure comprising, a body having an inlet and an outlet, said inlet having an end portion extending within said body and having aligned upper and lower annular valve ports communicating with said outlet, aligned upper and lower valve seats defining said valve ports, a valve plug structure mounted within said valve body having axially aligned integral upper and lower valve plug portions connected to a common post and adapted to seat on the respective upper and lower valve seats, said lower valve plug portion having a perforated cylindrical wall and an open lower end, the upper end of said lower valve plug portion being closed and adapted to seat on the lower valve seat in a closed position to prevent the flow of fluid therethrough, a fixed cage having an upper circumference forming the lower valve seat and a lower cylindrical perforated wall communicating with the outlet, said lower valve plug portion being received within the cage and covering at least a substantial portion of the perforated area of the fixed cage in a closed position, the perforated area of the lower plug portion and the perforated area of the cage which are exposed to fluid flow both increasing simultaneously in size upon movement of the lower plug portion toward an open position and said fluid first flowing through the perforations in said lower valve plug portion and then through the perforations in said cage to said outlet, and means to move said valve plug portions between open and closed positions relative to the valve ports.
2. A valve structure as set forth in claim 1 wherein the openings in each of said generally cylindrical walls are arranged in a plurality of spaced rings about the walls with the openings being of an increasing size from closed position toward full open position.
3. A valve structure as set forth in claim 1 wherein the openings in the perforated wall of said cage are of a decreasing size from a position adjacent the associated seat to a position remote from the associated seat.
4. A valve structure comprising, a body having an inlet and an outlet, said inlet having an end portion extending within said body and having a pair of aligned annular valve ports communicating with said outlet, a pair of aligned valve seats defining said valve ports, a valve plug structure mounted within said valve body having a pair of axially aligned valve plug portions connected to a common post and adapted to seat on said valve seats, one of said valve plug portions having a perforated cylindrical wall and one open end, the other end of said valve plug portion being closed and adapted to seat on its associated valve seat in a closed position to prevent tHe flow of fluid therethrough, a fixed cage forming one of the valve seats and having a cylindrical perforated wall communicating with the outlet, said one valve plug portion being received within the cage and covering at least a substantial portion of the perforated area of the fixed cage in a closed position, the perforated area of said one plug portion and the perforated area of the cage which are exposed to fluid flow both increasing simultaneously in size upon movement of said one plug portion toward an open position and said fluid first flowing through the perforations in said one valve plug portion and then through the perforations in said cage to said outlet, and means to move said valve plug portions between open and closed positions relative to the valve ports.
US32664073 1973-01-26 1973-01-26 Control valve structure having double ports Expired - Lifetime US3821968A (en)

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Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917221A (en) * 1973-08-20 1975-11-04 Tokico Ltd High-pressure-drop valve
US3990475A (en) * 1975-01-08 1976-11-09 Honeywell Inc. Low noise valve trim
US4040440A (en) * 1975-06-18 1977-08-09 Spence Engineering Company Silenced valve construction
FR2431652A1 (en) * 1978-07-19 1980-02-15 Linde Ag METHOD AND APPARATUS FOR EXTRACTING GASES FROM CONTAINERS
FR2443627A1 (en) * 1978-12-05 1980-07-04 Wacker Chemie Gmbh GAS INJECTION VALVE FOR SUSPENSIONS
DE3101494A1 (en) * 1980-01-25 1981-12-24 Kubota Ltd VALVE
DE3224011A1 (en) * 1981-07-02 1983-01-13 Schmidt Rudolf Armaturen & Gus Arrangement for multi-stage restriction in control valves
US4376448A (en) * 1981-01-26 1983-03-15 Mark Controls Corporation Let-down valve
US4480662A (en) * 1982-04-13 1984-11-06 Garrels Wilbur D Hydraulic system valve
US4508138A (en) * 1983-08-05 1985-04-02 Chas. M. Bailey Co., Inc. Polyjet valve with backwash
FR2568971A1 (en) * 1984-08-07 1986-02-14 Bertin & Cie Valve device for a fluid, particularly steam or other hot or corrosive gas
EP0186268A2 (en) * 1984-10-11 1986-07-02 Radialtemp Limited Air distribution terminals and air treatment systems
US4662603A (en) * 1985-10-03 1987-05-05 Seaboard Wellhead, Inc. Piloted wellhead flow control valve
US4722507A (en) * 1985-09-25 1988-02-02 Masoneilan International, Inc. Piston sealing ring apparatus
US4739795A (en) * 1986-07-18 1988-04-26 Sundstrand Corporation Flow control valve
US4762146A (en) * 1986-09-22 1988-08-09 Sundstrand Corporation Flow control valve
GB2208421A (en) * 1987-07-30 1989-03-30 Kent Process Control Ltd Flow control valve
EP0461736A2 (en) * 1990-06-15 1991-12-18 MANNESMANN Aktiengesellschaft Valve device
US5174335A (en) * 1992-04-30 1992-12-29 Kabushiki Kaisha Com. Bidirectional vacuum valve
DE4129581A1 (en) * 1991-09-06 1993-03-11 Teves Gmbh Alfred CONTROLLABLE VALVE ARRANGEMENT FOR ADJUSTABLE TWO-TUBE VIBRATION DAMPERS
US5351717A (en) * 1992-10-09 1994-10-04 Bailey Japan Co., Ltd. High differential pressure control valve
EP1380912A2 (en) * 2002-07-10 2004-01-14 Saint-Gobain Performance Plastics, Inc. Variable flowrate regulator
US6681792B2 (en) 2000-09-07 2004-01-27 Core Industries Reduced-length sleeve valve
US20040183044A1 (en) * 2003-03-20 2004-09-23 Wears William Everett Severe service control valve
JP2005533229A (en) * 2002-07-17 2005-11-04 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Improved skirt-guided globe valve
US20090057595A1 (en) * 2005-03-17 2009-03-05 Fisher Controls International Llc Fluid Pressure Control Device Having a Throttling Element Seal
US20090057592A1 (en) * 2007-08-28 2009-03-05 Lakhan Haresh C Flow control and closure valve with axial flow in the valve element
US20110186140A1 (en) * 2010-02-04 2011-08-04 O.M.T. Officina Meccanica Tartarini S.r.I. Gas Pressure Regulator
RU2467234C2 (en) * 2010-06-21 2012-11-20 Евгений Юрьевич Ефремов Double-seat valve (versions)
US20130104557A1 (en) * 2011-10-28 2013-05-02 Shawn M. McMahon Gas turbine engine cooling valve
US8490651B2 (en) * 2011-01-14 2013-07-23 Metal Industries Research & Development Centre. Fluid adjusting device
US20130256573A1 (en) * 2012-03-30 2013-10-03 Balcke-Dur Gmbh Throttle device
CN103672030A (en) * 2012-08-31 2014-03-26 克朗斯股份公司 Hybrid control valve
US8944085B2 (en) 2013-01-14 2015-02-03 Mueller International, Llc Valve with sync cam
US8960229B2 (en) 2013-01-14 2015-02-24 Mueller International, Llc Sleeve valve with sync cam
US9010412B2 (en) 2011-12-20 2015-04-21 Oil States Energy Services, L.L.C. Ball drop wellhead control apparatus
WO2015148872A1 (en) * 2014-03-27 2015-10-01 Emerson Process Management Regulator Technologies, Inc. Double port pressure regulator with floating seat
US20160186892A1 (en) * 2014-12-24 2016-06-30 Cameron International Corporation Valve assembly
US20170009906A1 (en) * 2015-07-10 2017-01-12 Azbil Corporation Regulating valve
US10125571B2 (en) 2014-12-24 2018-11-13 Cameron International Corporation Valve assembly with cage and flow control assembly
US10253593B2 (en) 2014-12-24 2019-04-09 Cameron International Corporation Valve assembly
US10260654B2 (en) 2014-12-24 2019-04-16 Cameron International Coporation Valve assembly

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US1813222A (en) * 1928-10-17 1931-07-07 Bailey Meter Co Balanced valve
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Cited By (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917221A (en) * 1973-08-20 1975-11-04 Tokico Ltd High-pressure-drop valve
US3990475A (en) * 1975-01-08 1976-11-09 Honeywell Inc. Low noise valve trim
US4040440A (en) * 1975-06-18 1977-08-09 Spence Engineering Company Silenced valve construction
FR2431652A1 (en) * 1978-07-19 1980-02-15 Linde Ag METHOD AND APPARATUS FOR EXTRACTING GASES FROM CONTAINERS
FR2443627A1 (en) * 1978-12-05 1980-07-04 Wacker Chemie Gmbh GAS INJECTION VALVE FOR SUSPENSIONS
US4261389A (en) * 1978-12-05 1981-04-14 Wacker-Chemie Gmbh Gas injecting valve for suspensions
DE3101494A1 (en) * 1980-01-25 1981-12-24 Kubota Ltd VALVE
US4375821A (en) * 1980-01-25 1983-03-08 Kubota, Ltd. Control value
US4376448A (en) * 1981-01-26 1983-03-15 Mark Controls Corporation Let-down valve
DE3224011A1 (en) * 1981-07-02 1983-01-13 Schmidt Rudolf Armaturen & Gus Arrangement for multi-stage restriction in control valves
US4480662A (en) * 1982-04-13 1984-11-06 Garrels Wilbur D Hydraulic system valve
US4508138A (en) * 1983-08-05 1985-04-02 Chas. M. Bailey Co., Inc. Polyjet valve with backwash
FR2568971A1 (en) * 1984-08-07 1986-02-14 Bertin & Cie Valve device for a fluid, particularly steam or other hot or corrosive gas
EP0186268A2 (en) * 1984-10-11 1986-07-02 Radialtemp Limited Air distribution terminals and air treatment systems
EP0186268A3 (en) * 1984-10-11 1987-07-08 Radialtemp Limited Fluid control valves and air treatment systems
US4722507A (en) * 1985-09-25 1988-02-02 Masoneilan International, Inc. Piston sealing ring apparatus
US4662603A (en) * 1985-10-03 1987-05-05 Seaboard Wellhead, Inc. Piloted wellhead flow control valve
US4739795A (en) * 1986-07-18 1988-04-26 Sundstrand Corporation Flow control valve
US4762146A (en) * 1986-09-22 1988-08-09 Sundstrand Corporation Flow control valve
GB2208421A (en) * 1987-07-30 1989-03-30 Kent Process Control Ltd Flow control valve
GB2208421B (en) * 1987-07-30 1991-09-04 Kent Process Control Ltd Flow control valve
EP0461736A2 (en) * 1990-06-15 1991-12-18 MANNESMANN Aktiengesellschaft Valve device
EP0461736A3 (en) * 1990-06-15 1992-06-10 Mannesmann Aktiengesellschaft Valve device
DE4129581A1 (en) * 1991-09-06 1993-03-11 Teves Gmbh Alfred CONTROLLABLE VALVE ARRANGEMENT FOR ADJUSTABLE TWO-TUBE VIBRATION DAMPERS
DE4129581C2 (en) * 1991-09-06 2000-10-05 Continental Teves Ag & Co Ohg Controllable valve arrangement for controllable two-pipe vibration dampers
US5174335A (en) * 1992-04-30 1992-12-29 Kabushiki Kaisha Com. Bidirectional vacuum valve
US5351717A (en) * 1992-10-09 1994-10-04 Bailey Japan Co., Ltd. High differential pressure control valve
US6681792B2 (en) 2000-09-07 2004-01-27 Core Industries Reduced-length sleeve valve
EP1380912A2 (en) * 2002-07-10 2004-01-14 Saint-Gobain Performance Plastics, Inc. Variable flowrate regulator
EP1380912A3 (en) * 2002-07-10 2004-12-22 Saint-Gobain Performance Plastics, Inc. Variable flowrate regulator
JP4759725B2 (en) * 2002-07-17 2011-08-31 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Skirt guide type fluid control valve
JP2005533229A (en) * 2002-07-17 2005-11-04 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Improved skirt-guided globe valve
US7028712B2 (en) * 2002-07-17 2006-04-18 Fisher Controls International Llc. Skirt guided globe valve
US20040183044A1 (en) * 2003-03-20 2004-09-23 Wears William Everett Severe service control valve
US20090057595A1 (en) * 2005-03-17 2009-03-05 Fisher Controls International Llc Fluid Pressure Control Device Having a Throttling Element Seal
US9046184B2 (en) 2005-03-17 2015-06-02 Fisher Controls International Llc Fluid pressure control device having a throttling element seal
US8403003B2 (en) * 2005-03-17 2013-03-26 Fisher Controls International Llc Fluid pressure control device having a throttling element seal
US20090057592A1 (en) * 2007-08-28 2009-03-05 Lakhan Haresh C Flow control and closure valve with axial flow in the valve element
US20110186140A1 (en) * 2010-02-04 2011-08-04 O.M.T. Officina Meccanica Tartarini S.r.I. Gas Pressure Regulator
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