US923568A

US923568A - Pressure-reducing valve.

Info

Publication number: US923568A
Authority: US
Inventors: Filiberto Nicola
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-04-12
Filing date: 1909-04-12
Publication date: 1909-06-01
Anticipated expiration: 1926-06-01

Description

F. NIGOLA.

PRESSURE BEDUUING VALVE.

APPLICATION mum 11.12. 1909.

923,568. Patented June 1,1909.

WITNESSES I INVENTOR m J'dzleria Ji'cala 1 av ATTORHE Y3 UNITED STATES PATENT OFFICE; ritrsnn'ro Nicolai, or vonK, N.r. Panasonicnnocents VALVE. i

Specification Letters Patent.

Application filed April 12, 1909'.

Patented June 1, 1909.

Serial No. 489,396.

T 0 all whom it may concern:

Be it known that I, FrLmEn'ro NICOLA, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn,

in the county of Kings and State of New.

York, have invented a new and Improved PressureFReducing Valve, of which the following is a full, clear, and exact description.

This invention relates to valves adapted for reducing the ressure of a motive agent as it is utilized or useful effect, and more particularly to reduce the pressure of water owing from high pressure service conduits, to hose or the like for extinguishing fires or for other purposes that re uire a controlled uniform ressure of fluid or iquid where used.

The object of my invention is to provide novel, simple details of construction for a pressure reducing valve, that afford a practical, inex ensive device of the character indicated, which is generally a. plicable for use in control-1' the pressure 0 water, steam or gas as it is dlstributed to a point for use from a source of high pressure supply.

The invention consists in the novel construction and combination of parts, as is hereinafter described and defined in the appended claims.

Reference is to be had to the accompanying drawing and to the characters of reference thereon, the single figure shown representing a longitudinal sectional view of the improved valve.

The device is shown as introduced between st; high pressure water conduit 10, that appears at the right in the drawing, and a reduced pressure service main 11, that is shown at the left-in said view. The valve shell 12, that is a detail of the ,invention, may be 4 joined with the conduit 10 and service main 11 by flanges a, mother preferred means, and consists of the following details; A eoncavo-convex wall 12 forms the lower side of the shell 12, and directly above the wail. 12,

a-circular o 'ening b is produced in a diaphragm 13, rom which depends a transverse partition 13, that integral with a cylin- 'dricahguidewall 14, which is joined with the concavomonvex wall 12 at-its side that is 0, nearest to the highpressure'conduit 10. The ripper edged) of the diaphragm 13 is beveled andafiierds a valve seat, and concentric with saitl vavleseat and equallys aced therefrom,

z; addme-like topnvall-12 is ormed integrally with the diaphragm 13 and other portions of the shell 12'.

From the dome top 12", a cylindrical wall or valve case 15 is upwardly extended, which is an integral portion of the guide Wall 14 and is axially coincident therewith; The wall 15 is extended down and connects with the diaphragm 13, as is indicated at 15*, and openings 0 are formed therein at intervals, as shown by dotted lines. A cylindrical valve is provided, which comprises two integral portions 16, 16", that are concentric or have a common axis. The upper portion L6 of the valve is of a diameter that ads. 7 ts it to slide freely but liquid-tight in the va vc case 15, and to insure against leakn ei, a packing ring cl is fitted into a peripl ieral groove in said ortion 16 of the valve and contacts with t e, true inner suriace' oi' the valve case 15. The lower portion 16".ofthe valve body is slidably fitted inl t-he ring-like guide wal tact with the valve body and case, thus adapting the lower portion 16 of the valve body to form a closure between thcrhigh pressure or receiving end ofth e :valve shell and the opposite end thereof. There is-a radial shoulder f formed between then per portion 16 and the lower portionlfi the valve body and thd outer corner of this shoulder is beveled, thus adaptin it to have liquid-tight engagement with the beveled valve seat 6. j

The valve body is centrally chambered from its lower end toward the 11 per end thereof to lighten it, and the heig t ofqthic upper portion 16 from the valve seat when imposed thereon, is such thatia space; is afforded above the valve in the case 16 which is closed by a cover platel fib Upon the portion of the valve shell;12, that is attached to the scl'vicernain 11 at "the left in the drawing, an upright valve easel-'7 is formed, having a true cylindrical bore therein, and in said bore a controller-valve 18 is fitted, that is rendered water ti ht by a packing joint ring 9 that is embedded 111a roove in the periphery of the valve body. radial fian e h is formed on the upper end of the controller valve 18, which when seated on a similar flange '5 formed on the valve case 14 and a packing ring 6 that is embedded in the valve has watentight chin 17, limits the downward movement of said hei' ht, whereon a HOYKB bar 20 is mounted on secured. Aco ed meal ame two spring 21 is centrally a] no 'below and near the port 0.

seated on the upper end of the controller valve. 18, and upons'aid spring a pressure plate 21' is mounted, which atits center receives the lower'end of an adjusting screw 22, that has-athreaded engagement with a central threaded perforationm theyokebar 20, said screw being controlled by a hand wheel 22 that issecured on the upper end thereof.

The controller valve -18 is prevented from tu on its axis, by a sphnej m that pro- 1ectst er'efrom into loose engagement within a vertical groo e n formed in the side wall ofthe valve oas 17.

In the cylindrical body of the valve case 17, as shown at the left in horizontal, but the upper wall thereof is s10 ed upward, so as to give proper vertical wi thto said passa e at its right hand end.

In the side wall 0 the valve case 17, opposite the widest end of the transverse passage r two spaced narrow ports .9, s are formed in the same vertical plane. A-bent pipe 24 is secured by its lower endover the upper port 8 in the side wall of the valve case 17, and

thence extends upward and laterally, so-as to locate the other end thereof in engagement with the cover 15 on the valve case 15 over anopening t therein. Over the lower port 8 inthe valve case 17 one end of a bent pipe 25 is seated and secured, and the lower end of said. 'ipe that seats upon the upper side of the va ve shell 12 over an opening it therein, is secured thereto by any suitable means.

As shown, the relative dpositions of the 'ports .9, s, and port 0, an the vertical di- ,mensions of the passage rat the right hand end thereof, are such that when the controller valve '18 is seated upon the flange i at the u or end of the case 17, the ports 8, s, w be put into communication with each other by a disposal of the wider end of the passa e r opposite said ports. This will aflor a direct passage for liquid through the bent pipes 25 and 24, from the left end of the valve chamber 12 into the chamber above the main valve 16. At this time the narrow end of the passage r is disposed below and near the port 0, so that the left hand end of the by-pass pipe 23 is sealed.

ikssuming that the arts of the device are adjustedas shown, t e operation is as follows: The controller valve 18 is by an adjustme'nt'of the screw 22 and spring 21, loaded to afford a desired pressure or liquid ceases passing into the ipe 11 at the left end of the reducing va vs The initial pressure of the liquid fed from the conduit 10 Into the valve chamber 12, will lift the valve 16, and water or the liquid passin into the reducing valve will pass throu the openings 0 into the left hand end of t e valve chamber 12. As: the initial pressure of the liquid thus introduced below the controller valve is greater than the load on said valve, it will rise in the casing 17 and close the lower port 8', said elevation of the valve 18 disposing the narrow end of the passage 1' there- In in registry with the left handend of the by-pass pipe 23. As the upper port s in the case 17, is still in open communication with the widest end of the transverse passa e 1', it will be seen that the initial pressure 0 the liquid from the conduit 10 will be transferred to the chamber above the main valve 16. The area of the upper end of the valve 16 being greater than thatof the annular shoulder and the beveled face on said valve, this imposed pressure on the valve 16 will correspondin 1y depress it and re- 'duce the volume of iquid passing through the ports 0. a

It will be understood that the reduction in pressure had by the liquid assing into the left endportion of the va ve chamber 12, will correspond withthe load on the controller valve 18.

' Obviously an variation in the initial ressure of the liquid passed into the reducingtvalve from the conduit 10, will be automatically reduced to a continuous pressure that is exactly regulated by the spring pres-: sure on the controller valve.

Having thus described my invention, I, claim as new and desire to secure by Letters Patent:

1. A pressure reducing valve, embed in a main valve and a controlling valve, ot s'lidable in casings that are branch extensions from the shell of the reducin valve, a spring-pressed device engaging t e upper end of the controlling valve, orts in the main valve casing for transferring fluid underinitial pressure into the shell below the controllin valve, so as to lift the controlling valve, an means controlled by the liftincgl of the cdntrolling valve for transferring flui under initial pressure through the controlling valve and into engagement with the upper surface of the main valve, so as to press said valve for the control "of fluid passing below it in accord with the spring pressure on the controlling valve.

2. The combination with a; high pressure fluid conduit and a reduced pressure pipe, of a pressure reducin valve, embodylng a shell, a main valve s 'dablein an upright extension from the shell, a controllin v ve slidable in a branch casing extende from the shell at the side of the other valve, 9.

pressure regulating spring seated on the con trolling valve, said valve having a. transverse pessage therein wider at one end then at the other end, the casing for the controlling valve having a. port therein that may register with the narrow end of the passage, this casing also having two spaced ports formed opposite the single port therein, two bent pipes that respectively connect the upper port with a. chamber in the main valve casing above the majnvalve, and the lower port with the reducing valve shell near the controller valve, and a by-pass pipeconmeeting the single port that registers with the narrow end of the trensverse passage 15 with an opening'in the reducing valve shell near the high pressure conduit.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FILIBERTO NICOLA.

Witnesses:

GIACOMO PROVERE, GIACOMO ZURDITI.