US2989977A - Dispensing valve - Google Patents

Description

June 27, 1961 G. o. MATTER nIsPENsING VALVE Filed Feb. 23. 1954 j; :MEJ

Figm

United States Patent 2,989,971 DISPENSING VALVE Gustave 0. Matter, 3112 NE. v46th Ave., Portland 13, O1-eg.

Filed Feb. 23, 1954, Ser. No. 412,008 4 Claims. (Cl. 137-204) My invention relates to Dispensing Valves and in particular to pressure controlled dispensing valves and includes means for controlling fthe operating pressure of such valves as shown in my Patent No. 2,233,818 dated March 4, 1941.

An object of this invention is to provide means controlling the operating pressure whereby the dispensing of a liquid is actuated and controlled by the pressure of the liquid.

Another object is a dispensing valve arranged to normally hold the dispensing chamber inlet valve closed by means other than by gravity.

Another object is a dispensing valve wherein the dispensing chamber outlet valve is so constructed as to adjust itself to lthe valve seat to prevent any leakage.

Another object is a dispensing valve with means provided to hold the lower end of the dispensing chamber outlet valve in line with the outlet.

Another `object is a dispensing valve provided with means to prevent back-syphoning.

Still another object is a dispensing valve with its outlet arranged to prevent liquid from discharging through vent holes in the wall of the outlet passage.

Further objects and advantages of the invention will appear in and from the following specication considered in connection with the accompanying drawings, which are for purpose of illustration and not intended as a definition of the invention, the invention being defined in the appended claims.

Referring to the drawings, in which like characters of reference indicate corresponding parts throughout the several views:

FIG. I is a vertical section of the dispensing valve, shown with its operating parts in position `as when pressure inthe supply chamber is less than the pressure in the dispensing chamber.

FIG. II is a vertical section of the same dispensing valve shown in FIG. I, but with its operating parts in position as when pressure in the supply chamber is increased to equal the pressure in the dispensing chamber, and show; ing spacer rings under the pressure controlling spring.

FIG. III is a vertical section of a modified form of the Vdispensing valve with the operating parts in position as when pressure in the supply chamber is less than the pres- Vsure in the dispensing chamber and with an adjustable dispensing chamber outlet valve seat to control the operating pressure.

FIG. lV is a vertical section of the same dispensing valve shown in FIG. III, but with its operating parts in position as when pressure in the supply chamber is iu creased to equal the pressure in the dispensing chamber.

FIG. V is a vertical section of 1a modied form of the dispensing valve shown in FIG. III, without the adjust able dispensing chamber outlet valve seat, but showing spacer rings under the pressure controlling spring and with stationary dispensing chamber outlet valve seat and with its operating parts in position as when pressure in the supply chamber is less than the pressure in the dispensin g chamber.

As shown most clearly in FIG. I, the val've assembly consists of a casing divided into at least two chambers by a transverse movable valve seat member 3 or partition wall, the numeral 2 designating the supply chamber and the reference character 8 designating the dispensing cham- 2,989,971 Patented June 27, 1961 ber. Communicating with the supply chamber 2 is a supply pipe 1 which Vis connected to or leads from a source of water under pressure and constitutes an inlet pipe for the assembly. The lower portion of the casing is provided with an upwardly projecting neck extending within the dispensing chamber and terminating at its upper end in a seat 7 and conceutrically disposed with respect to the seat member 3, in the lower portion of the casing, is the outlet bore or passageway 9 which communicates directly with the dispensing chamber 8 and discharges therefrom through the enlarged portion 15 of the outlet which is vented as designated by the reference character 14.

Disposed within the dispensing chamber and seated at its lower end on the lower portion of the casing is a compression spring 10, the upper end of such spring seating on the underside of the seat assembly 3 and normally tending to urge the latter upwardly into the relative position shown in FIGS. I, III and V. The seat member 3 is provided with a centrally disposed opening within which an inlet valvey 4 is adapted to contact its seat 5 on seat member 3 and thus close off communication between the supply and dispensing chambers. The valve 4 is carried at 4the upper end of the valve stem 13 and fixed adjacent the lower end of the stem is a further valve 6, constituting the outlet valve, which is in the form of an annular lle-sible element extending radially outwardly from the stem and adapted to engage the yseat 7 previously described. A conipression spring 11 is disposed around the upper portion of the valve assembly and seats upon a collar 12 at its lower end and upon the underside of the movable valve seat member 3 at its upper end prepositioning the valve assembly with respect to the member 3.

The lower extremity of the valve stem is provided with radially projecting arms 20 which engage within the out-V let bore 9 and serve to guidably position the lower end of the stem. The junction of the smaller outlet bore 9 with the enlarged portion 15 is characterized by the tapered llower edge 18 extending from the upper edge 19 of the enlarged bore portion 15, the purpose of which will be presently apparent.

A shoulder 16 within the supply chamber 2 limits the upward movement of the valve seat member 3.

Spacer rings 17 are adapted to be positioned between the lower end of compression spring 10 and the lower portion of the casing within the dispensing cham-ber to control the pressure on spring 10.

The device is intended to operate under a condition where 'the inlet pipe is under a fairly constant but uctuating pressure as, for instance, a city water main and the outlet pipe leads to a region of substantially atmospheric pressure. Chamber 8 is illed at periods of high pressure, while at periods of lowered pressure the lluid drains through the outlet when valve 6 is temporarily unseated during the periods of low pressure.

A supply line with one or more outlets or faucets, not shown, conveys liquid, by pressure, through supply pipe 1 into supply'lchamber 2 and against the movable valve seat member 3 and when no outlet or faucet in the supply line is open, thereby retaining the pressure in the supply line, t-he operating parts are in the position as shown in FIGS. II and IV, the valve 4 contacts its seat 5 in the member 3 and the valve 6 which is operatively connected to valve 4, contacts its seat 7 thereby shutting off communication from dispensing chamber 8 to outlet 9.

When an outlet or faucet leading from the supply line is opened the operating parts of the dispensing valve are as shown in FIGS. I, III and V, the pressure being relieved, the seat member 3, which is of a ilexible material, as shown in FIGS. I and II, is actuated by spring 10, or the seat member 3 which is a piston actuated by spring 10, as shown in FIGS. HI, IV and V, rises thereby lifting valve 4 which lifts valve 6 from its seat 7, permitting the f Vausgew i l f 3 liquid in dispensing `chamber 8 to pass through outlet 9 as shown in FIGS. I, III and V.

When the outlet or faucet in the supply line is again closed and the pressure is retained in the supply line the operating parts are rst as shown in FIGS. II and IV, the valve 6 being in contact with its seat 7, the valve 4 is stopped in its downward movement and the pressure in supply chamber 2 continues to force the seat 5 down from the valve 4 thereby allowing liquid to pass from the supply chamber 2 into the dispensing chamber 8 until the pressure in dispensing chamber 8 becomes sullicient to overcome the pressure on the other side of the member 3 at which time the valve seat 5 contacts its valve 4 and the operating parts resume the positions as shown in FIGS. II and IV and remain in this position until the pressure in the supply line is relieved by opening an outlet or faucet. To illustrate some of the objects of the instant invention I shall describe the operation of the dispensing valve when in use as a primer valve to replenish water, evaporated from a floor drain trap, to prevent sewer gases from escaping out of the oor drain.

The pressure in the water mains in some cities varies in different locations of ythe same city, for example in one city the maximum pressure in one location is 50 p.s.i. and the maximum i-n another location is 125 p.s.i. with maxi- I num pressures in other locations between these two. When the maximum pressure is once established in a lolcation it does not exceed the established maximum.

f Therefore it is necessary to have a dispensing valve with means incorporated therewith to permit effective and economical adjustment of the valve to suit the maximum pressure established in the location where the `valve is installed. This is accomplished by means establishing the pressure required to compress the spring suiciently to lower the valve 6 to contact its seat 7.

To assist in the closure of the valve 4 a spring 11 is compressed between the valve seat member 3 and a collar 112 on the valve stem 13 and to assure a proper closure of the valve 6 on its seat 7 the valve 6 is composed of a flexible material which tends to cup into the seat when under pressure, as shown in FIGS. II and IV.

The outlet valve 6 and its valve stern 13 are held in alignment with the valve seat 7 and outlet 9 as by arms 20 on the lower end of the valve stem 13 and are slidable within'the outlet 9.

-To prevent back-syphoning of sewer gases through the valve into the water system, vent holes 14 are provided in an enlarged portion 15 of the outlet 9 and to prevent the water, while owing by gravity from the outlet 9 to a oor drain trap, from leaking out of the vent holes 14, `as shown in FIGS. I, II and V the lower edge 18 of outlet 9 entends beyond the upper edge 19 of the enlarged portion 15 and, as shown in FIGS. III yand IV the vent holes 14 open downward into the outlet 9 and its enlarged portion 15. Y

Ihe upward movement of the valve seat member 13 is limited by the shoulder 16, the downward movement of the valve seat member 3 is limited by the location of the Aseat '7 in relation to the valve 6.

To avoid the inconvenience and expense of furnishing a number of springs with each valve and to select and install the proper spring suitable to the maximum pressure in the water line in the location the valve is to be installed, a means is provided whereby the spring 10, as shown in FIG. I, is adapted to a low operating pressure, and as shown in FIG. II and also in FIG. V the spring is precompressed as by spacer rings 17, thus requiring a much higher operating pressure, but in either case the valve seat member 3 and its cooperating parts move the same distance. As shown in FIGS. III andIV the outlet 9 is shown as threaded into the lower end ofthe dispensing chamber 8 and with the valve seat 7 is arranged to be moved up or down in relation to the outlet valve 6 thereby altering the maximum distance between the valve 6 and its seat 7 to control the distance the valve 6 must move to contact its seat 7, the greater the distance the more compression of spring 10 required and therefore the higher the operating pressure required.

Assuming a dispensing valve is installed in a location where the maximum pressure inthe supply line is 100 p.s.i., the valve would be set to supply water to the dispensing chamber when the line pressure is 90 p.s.i. or more and the `operating parts would be in position as shown in FIGS. II and IV and, when the line pressure is reduced to p.s.i. or less by the use of a faucet of ixture, such as sink, shower, bath, toilet or sprinkler system connected to the water line, the valve 6 is forced up oil its seat 7 by force of spring 10 and the water held in the dispensing chamber 8 ows through outlet 9 to the floor drain trap and the operating parts would be in position as shown in FIGS. I, III and V and remain in this position until the pressure in supply chamber 2 is again increased by closure of the outlets inthe supply line.

It will be apparent to those skilled in the art that many changes may be made in the above-described valve without depanting from the essence of my invention.

Having described the invention, what is claimed as new is:

1. A dispensingv valve comprising a casing providing an upper supply chamber and a lower dispensing chamber, said supply chamber having a pressure fluid inlet, a movable member between the two said chambers, said movable member having a .central inlet opening therein, an outlet conduit connected to the lower end of said casing, the upper end of said outlet conduit projecting upward into said dispensing chamber and having a vertically disposed axial bore therethrough communicating with said dispensing chamber, a vertically disposed valve stem having its upper end projecting upward through the opening in said movable member, an inlet valve for said inlet opening into said dispensing chamber and an outlet valve for said outlet from said dispensing chamber, said inlet valve being on the upper end of said valve stem and adapted to control communication from said supply chamber to said dispensing chamber through the central opening in said'movable member, said outlet valve being adjacent the lower end of said valve stem and adapted to control communication through said outlet conduit from said dispensing chamber, said inlet andV outlet valves being operable in unison and controlled by the upward and downward movement of said movable member, said inlet valve adapted to open by downward movement of said movable member actuated by zliquid pressure in the supply chamber and by the closure of said outlet valve, said inlet valve adapted to close by upward movement of said movable member induced by pressure in said dispensing chamber, said outlet valve adapted to open by upward movement of said movable member actuated by reduction of pressure in said supply chamber and pressure applied in said dispensing chamber and -by the closure of said inlet valve, the movement of said movable member being controlled in part by means within said dispensing chamber counteracting a predetermined pressure in said supply chamber, said means including spring pressure applied between the lower end of said dispensing chamber and said movable member and acting against said movable member in a direction to counteract said predetermined pressure in said supply chamber, means to vary the spring pressure which is applied to said movable member by said spring, whereby the closing of said outlet valve, the opening of said inlet valve, the closing of said inlet valve and the opening of said outlet valve, in that order, can be eEected by dilerent supply chamber pressures acting against said movable member, said outlet conduit being adjustably connted to the lower end of said casing, the lower end of said outlet conduit extending below said dispensing chamber, said outlet conduit adapted to be adjusted vertically in relation to said outlet valve to regulate the maximum space between said outlet valve and its Seat on the upper end of said outlet conduit thereby to establish the fluid pressure required in the supply chamber to lowe saidoutlet valve toA contact its seat on the upper end of said outlet conduit.

2.A dispensing valve comprising a casing providing an upper supply chamber and a lower dispensing chamber, said supply chamber having a pressure fluid inlet, a movable member between the two said chambers, said movable member having a central inlet opening therein, an outlet conduit connected tothe lower end of said casing, the upper end of said outlet conduit projecting upward into said dispensingr chamber and having a verticallyv disposed axial bore therethrough communicating with said dispensing chamber, a vertically disposed valve stem having its upper end projecting upward through the opening in said movable member, an inlet val've for said inlet opening into said dispensing chamber and an outlet valve for .said outlet from said dispensing chamber, said inlet valve being on the upper end of said valve stem and adapted to control communication from said supply chamber to said dispensing chamber through the central opening in said movable member, said outlet valve being adjacent the lower end of said valve stem and adapted to control communication through said outlet conduit from said dispensing chamber, said inlet and outlet valves being operable in unison and controlled by the upward and l downward movement of said movable member, said inlet valve adapted to open by downward movement of said movable member actuated byl liquid pressure in the supply chamber and by the closure of said outlet valve, said inlet valve adapted to close by upward movement of said movable member induced by pressure in said dispensing chamber, said outlet valve adapted to open by upward movement of said movable member actuated by reduction of pressure in said supply chamber and pressure applied in said dispensing chamber and by the closure of said inlet valve, the movement of said movable member being controlled in part by means within said dispensing chamber counteraeting a predetermined pressure in said supply chamber, said means including spring pressure applied between the lower end of said dispensing chamber and said movable member and acting against said movable member in -a direction to counteract said predetermined pressure in said supply chamber, means to vary the spring pressure which is applied to said movable member by said spring, whereby the closing of said outlet valve, the opening of said inlet valve, the closing of said inlet valve and the opening of said outlet valve, in that order, can be effected by different supply chamber pressures `acting against said movable member, a spring acting between said movable member and a collar on said valve stem normally urging said inlet valve down into closing relation to the opening in said movable member.

3. A dispensing valve comprising a casing providing an upper supply chamber and a lower dispensing chamber, said supply chamber having a pressure iluid inlet, a movable member between the two said chambers, said movable member having a central inlet opening therein, an outlet conduit connected to the lower end of said casing, the upper end of said outlet conduit projecting upward into said dispensing chamber and having a vertically disposed axial bore therethrough communicating with said dispensing chamber, .a vertically disposed valve stem having its upper end projecting upward through the opening in said movable member, an inlet valve for said inlet opening into said dispensing chamber and an outlet valve vfor said outlet from said dispensing chamber, said inlet valve being on the upper end 0f said valve stem and adapted to control communication from said supply chamber to said dispensing chamber through the central opening in said movable member, said outlet valve being adjacent the lower end of said valve stem and adapted to control communication through said outlet conduit from said dispensing chamber, said inlet and outlet valves being operable in unison and controlled by the upward and downward movementof,v said movable;

member, said inlet valve adapted-L to; open by downward movement of said movable member actuated by liquid;v

pressure in said dispensing chamber, said outlet valve adapted to open byupward movement of said movable.

member actuated by reduction of pressure in said supplychamber and pressure applied in said dispensing, chamber and by the closure of said inlet valve, the movement of said movable member being controlled in part by means within said dispensing chamber counteractng, a predetermined pressure in said supplychamber,Y said means, including spring pressureapplied between the lowerendV oi said dispensing chamber and said movablemember and acting against said movable member' in Va direction to counteract said predetermined pressure in said supply chamber, means to vary the spring pressure which is applied to said movable member by said spring, whereby the closing of said outlet valve, the opening of said inlet valve, the closing of said inlet valve and the opening of said outlet valve, in that order, can be eiected by different supply chamber pressures acting against said movable member, the lower end of said outlet conduit extending downwardly from said dispensing chamber and having an enlarged lower por-tion, the lower edge of the upper unenlarged portion of said outlet conduit extending below the upper edge of the lower enlarged portion of said outlet conduit thereby to prevent liquid, while ilowing by gravity from the upper unenlarged portion, from owing down the wall of the lower enlarged portion of said outlet conduit and out vent yapertures which are provided in said lower enlarged portion to prevent back-syphoning of liquid or gases up through the valve yand out the uid inlet into the water supply system.

4. A dispensing valve comprising a casing providing an upper supply chamber and a lower dispensing chamber, said supply chamber having a pressure uid inlet, a movable member between the two said chambers, said movable member having a central inlet opening therein, an outlet conduit connected to the lower end of said casing, the upper end of said outlet conduit projecting upward into said dispensing chamber and having a vertically disposed axial bore therethrough communicating with said dispensing chamber, a vertically disposed valve stem having its upper end projecting upward through the opening in said movable member, an inlet valve for said inlet opening into said dispensing chamber and an outlet valve for said outlet from said dispensing chamber, said inlet valve being on the upper end of said valve stem and adapted to control communication from said supply chamber to said dispensing chamber through the central opening in said movable member, said outlet valve being adjacent the lower end of said valve stem and adapted to control communication through said outlet from said dispensing chamber, said inlet and outlet valves being operable in unison and controlled by the upward and downward movement of said movable member, said inlet valve adapted to open by downward movement of said movable member actuated by liquid pressure in the supply chamber and by the closure of said outlet valve, said inlet valve adapted to close by upward movement of said movable member induced by pressure in said dispensing chamber, said outlet valve adapted to open by upward movement of said movable member actuated by reduction of pressure in said supply chamber and pressure applied in said dispensing chamber and by the closure of said inlet valve, the movement of said movable member being controlled in part by means within said dispensing chamber counteracting a predetermined pressure in said supply chamber, said means including spring pressure applied between the lower end of said dispensing chamber land said movable member and acting against said movable member in a direction to counteract said predethe spring pressure which is applied to said movable memberlby Said spring, whereby the elosing of said outlet' val-ve,v the opening of said inlet Valve, the closing of said inlet valve andthe opening of said outlet valve, in that order, Ycan be effected by different supply chamber pressures acting'aganst said movable member, the lower end of saidrvalve stem being provided with a plurality of radially projecting arms guidably received in said outlet eonduit, aY spring `acting between said movable member and a collar on said valve stem normally urging said inylet valve down into closing relation to the opening in said movable. member, said `outlet valve being resilient and normally at and of a largerV diameter than the bore in saidY outlet conduit for peripheral closing engagement with itsV seat on the upper end lthereof when said movable ljember is urged downwardly by iluid pressure within said supply ':hiaxnber'in opposition to said spring pressure in said dispensing chamber, and said outlet valve being deformable into dished c'onflguration when engaged in closingn relation to said outlet conduit.

References Cited in the ile of this patent UNITEDSTATES PATENTS Engstrom Nov. 2, 1948

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