Solenoid actuated valve for anhydrous ammonia flow meters

Claim 2

In a solenoid actuated valve operator means for controlling the flow of a normally gaseous fluid from a liquid supply of same, having, a valve operator housing having a first passageway communicating with said liquid supply, a solenoid means mounted with said housing and having a core member, movable means having means therewith to receive fluid pressure thereon mounted within said housing, said movable means having a portion extending from said housing and including an outer end portion, said movable means having a second passageway therethrough communicating with said solenoid means, and said movable means having a valve closing member mounted on the outer end portion of said extended portion, and said first passageway within said housing communicates with said solenoid means, that improvement comprising: a partition member having a third passageway communicating with said second passageway and situated within said housing separating said solenoid means and said movable means, said partition member including at least one guide pin means attached thereto and extending therefrom, said movable means includes at least one groove wherein said guide pin means slidably lodges to keep said movable means from turning, said core member operably closes and/or opens said third passageway, a resilient means mounted between said movable means and said housing and urging said movable means into retracted closed position, said solenoid actuated valve operator means constructed and 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 third and said second passageway, said resilient means retracting said closing member to closed position with the valve seat, and with said core member not closing said third and said second 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 extend 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 in a piston, and b. said resilient means is a spring mounted around said plunger between said housing and said plunger, said spring acting in compression.

Claim 4

In a solenoid actuated valve means for controlling the flow of a normally gaseous fluid from a liquid supply of same, having, a valve operator housing, 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, a chamber with said housing having one portion larger than another portion, a first passageway through said housing having an outer end portion and communicating between said larger end portion of said chamber within said housing and said solenoid chamber, the outer end portion of said first passageway having a valve seat receiving in operation said core member, a second passageway through said housing communicating between said other portion of said chamber and said solenoid chamber, a piston-plunger means having a small plunger portion and a large plunger portion mounted in said chamber within said housing, the smaller plunger portion extending from said housing and forming with said housing an annular passageway communicating between tHe outside of said housing and said second passageway within said housing, sealing means between an outer end portion of said plunger portion and said housing, a piston mounted in 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, a main passageway through said piston, and a second passageway through said piston between said main passageway and said chamber at the wall thereof between the ends thereof, and a valve closing member mounted on the outer end portion of said extended inner plunger portion, that improvement comprising: resilient means mounted between said movable means and said housing and urging said piston-plunger means into retracted closed position, said piston has a guide pin means between said piston and said housing to keep said piston from turning, said solenoid actuated valve operator means constructed and 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 retracting 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 extend said plunger portion and move said valve closing means to an open position relative the valve seat.

Claim 5

In a solenoid actuated valve means for controlling the flow of a normally gaseous fluid from a liquid supply of same, having, a valve operator housing, 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, a chamber with said housing having one portion larger than another portion, a first passageway through said housing having an outer end portion and communicating between said larger end portion of said chamber within said housing and said solenoid chamber, the outer end portion of said first passageway having a valve seat receiving in operation said core member, a second passageway through said housing communicating between said other portion of said chamber and said solenoid chamber, a piston-plunger means having a small plunger portion and a large plunger portion mounted in said chamber within said housing, the smaller plunger portion extending from said housing and forming with said housing an annular passageway communicating between tHe outside of said housing and said second passageway within said housing, sealing means between an outer end portion of said plunger portion and said housing, a piston mounted in 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, a main passageway through said piston, and a second passageway through said piston between said main passageway and said chamber at the wall thereof between the ends thereof, and a valve closing member mounted on the outer end portion of said extended inner plunger portion, that improvement comprising: resilient means mounted between said movable means and said housing and urging said piston-plunger means into retracted closed position, said piston has a guide pin means between said piston and said housing to keep said piston from turning, said solenoid actuated valve operator means constructed and 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 retracting 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 extend said plunger portion and move said valve closing means to an open position relative the valve seat.

Claim 6

The valve operator means of claim 3, 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 passageways through said piston are liquid fluid passageways, and c. said resilient means is a helical spring mounted between said housing and said piston and around said plunger, said spring acting in compression.

Claim 7

The solenoid actuated valve operator as described in claim 4, wherein: a. said lower housing portion is threaded on the outer end portion thereof adapted to threadedly attach an anhydrous ammonia flow meter.

Claim 8

The solenoid actuated valve operator as described in claim 5, 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.