Solenoid actuated valve for anhydrous ammonia flow meters

Claim 2

A solenoid actuated valve operator means for controlling the flow of a normally gaseous fluid from a liquid supply of same, comprising: a. a valve operator housing, b. a solenoid means mounted with said housing and having a core member with means on an end portion thereof constructed and adapted to close a passageway, c. movable means having means therewith to receive fluid pressure thereon mounted within said housing, said movable means having a portion extending from said housing, a passageway therethrough communicating with said solenoid means, and valve closing means mounted on the outer end portion of said extended portion, said core member operable to close and/or open said passageway, d. another passageway within said housing communicating between a point outside of said housing and said solenoid means, and e. resilient means urging said movable means into extended position, said solenoid actuated valve operator means adapted to be mounted on a conduit having a valve seat therein, and when so mounted said valve closing means contactable with said valve seat, and in operation with said core member closing said passageway, said resilient means extending said valve closing means to closed position with the valve seat, and with said core member not closing said passageway, and force exerted on said fluid pressure receiving means on said movable means by pressure from the fluid in liquid form exerted thereon overcoming said resilient means to retract said movable means and move said valve closing means to open position.

Claim 3

The valve operator means of claim 1 wherein: a. said movable means is a slidably mounted plunger, and said means therewith to receive flUid pressure is a piston, and b. said resilient means is a spring mounted between said housing and said valve closing means, said spring acting in compression.

Claim 4

The valve operator means of claim 2 wherein: a. said passageway through said plunger is a gaseous fluid passageway, and b. said another passageway is a liquid fluid passageway in communication with said piston.

Claim 5

A solenoid actuated valve operator means for controlling the flow of a normally gaseous fluid from a liquid supply of same, comprising: a. a valve operator housing, b. a solenoid means having an inner chamber closed to the atmosphere, and an axially movable core member mounted in said chamber, said solenoid means mounted with said housing, c. a chamber within said housing having an intermediate portion larger than the outer portions, a first passageway through said housing communicating between the outer end portion of said chamber within said housing and said solenoid chamber, the outer end portion of said passageway having a valve seat receiving in operation said core member, a second passageway through said housing communicating between the outer portion of said intermediate portion of said chamber within said housing and said solenoid chamber, d. a piston-plunger means having a central plunger portion mounted in said outer portions of said chamber within said housing, the inner plunger portion extending from said housing and forming with said housing an annular passageway communicating between the outside of said housing and the inner portion of said intermediate portion of said chamber within said housing, sealing means between an outer end portion of said plunger portion and said housing, a piston mounted in said intermediate portion of said chamber within said housing, a main passageway through said plunger portion communicating between said first passageway through said housing and outside said plunger portion, and a passageway through said piston, e. a valve closing means mounted on the outer end portion of said extended inner plunger portion, and f. resilient means urging said piston-plunger means into extended position, said solenoid actuated valve operator means adapted to be mounted on a conduit having a valve seat therein, and when so mounted said valve closing means contactable with said valve seat, and in operation with said core member closing said first passageway in said housing, said resilient means extending said valve closing means to closed position with the valve seat, and with said solenoid actuated to retract said core member and open said first passageway in said housing, the force exerted on said piston by the pressure from the fluid in liquid form exerted thereon overcoming the force of said resilient means to retract said plunger portion and move said valve closing means to an open position relative the valve seat.

Claim 6

A solenoid actuated valve operator means for controlling the flow of a normally gaseous fluid from a liquid supply of same, comprising: a. a valve operator housing, b. a solenoid means having an inner chamber closed to the atmosphere, and an axially movable core member mounted in said chamber, said solenoid means mounted with said housing, c. a chamber within said housing having an intermediate portion larger than the outer portions, a first passageway through said housing communicating between the outer end portion of said chamber within said housing and said solenoid chamber, the outer end portion of said passageway having a valve seat receiving in operation said core member, a second passageway through said housing communicating between the outer portion of said intermediate portion of said chamber within said housing and said solenoid chamber, d. a piston-plunger means having a central plunger portion mounted in said outer portions of said chamber within said housing, the inner plunger portion extending from said housing and forming with said housing an annular passageway communicating between the outside of said housing and the inner portion of said intermediate portion of said chamber within said housing, sealing means between an outer end portion of said plunger portion and said housing, a piston mounted in said intermediate portion of said chamber within said housing, a main passageway through said plunger portion communicating between said first passageway through said housing and outside said plunger portion, and a passageway through said piston, e. a valve closing means mounted on the outer end portion of said extended inner plunger portion, and f. resilient means urging said piston-plunger means into extended position, said solenoid actuated valve operator means adapted to be mounted on a conduit having a valve seat therein, and when so mounted said valve closing means contactable with said valve seat, and in operation with said core member closing said first passageway in said housing, said resilient means extending said valve closing means to closed position with the valve seat, and with said solenoid actuated to retract said core member and open said first passageway in said housing, the force exerted on said piston by the pressure from the fluid in liquid form exerted thereon overcoming the force of said resilient means to retract said plunger portion and move said valve closing means to an open position relative the valve seat.

Claim 7

The valve operator means of claim 4 wherein: a. said first passageway through said housing and said main passageway through said plunger portion is a gaseous fluid passageway, b. said second passageway through said housing, said annular passageway and said passageway through said piston is a liquid fluid passageway, and c. said resilient means is a helical spring mounted around said extended inner plunger portion between said housing and said valve closing means, said spring acting in compression.

Claim 8

The solenoid actuated valve operator as described in claim 5, wherein: a. said lower housing portion is threaded on the outer end portion thereof adapted to threadedly attach an anhydrous ammonia flow meter.

Claim 9

The solenoid actuated valve operator as described in claim 6, wherein: a. said lower housing portion has a flanged portion on the lower end thereof adapted to attach said solenoid valve to said anhydrous ammonia flow meter.