Discharge valve
View Patent ↗A discharge valve including a valve seat and a piston having a head with a bottom surface that is convex across its entirety for engaging the valve seat. The piston has a stem extending upwardly from the head away from the valve seat. A valve guide has a socket for slidably receiving the stem of the piston and a number of apertures intersecting the socket for providing pressure relief thereto. A compressed spring is disposed between the valve guide and the head for normally retaining said the in engagement with the valve seat.
1. A valve guide for a discharge valve assembly, said valve guide comprising:
a conical prop;
a socket extending through said prop, said socket for slidebly receiving a stem of a piston;
a plurality of apertures intersecting said socket.
2. The valve guide of claim 1 wherein the guide includes a disc-shaped plug connected to said prop.
3. The valve guide of claim 2 wherein the plug has a circular side wall, having a top, a circumferential flange projecting outwardly from the top of the side wall wherein said flange is sized to engage a valve fluid end seat deck.
4. The valve guide of claim 3 wherein the plug side wall has a pair of peripheral grooves beneath the flange and each of said grooves being sized to accept an o-ring seal.
5. The valve guide of claim 3 wherein the plug has a base with a peripheral step to provide an abutment for a spring.
6. The valve guide of claim 5 wherein said plug has a plurality of apertures to access an inner end of said socket.
7. The valve guide of claim 6 wherein there are six apertures.
8. The valve guide of claim 2 wherein the prop is integral with said plug.
9. The valve guide of claim 8 wherein the prop has a prop top integral at a plug base and an exterior diameter that decreases gradually from the base of said plug.
10. The valve guide of claim 9 wherein the plug has a circular side wall, having a top, a circumferential flange projecting outwardly from the top of the side wall wherein said flange is sized to engage a valve fluid end seat deck.
11. The valve guide of claim 10 wherein the plug side wall has a pair of peripheral grooves beneath the flange and each of said grooves being sized to accept an o-ring seal.
12. The valve guide of claim 11 wherein the plug base has a peripheral step to provide an abutment for a spring.
13. The valve guide of claim 12 wherein said plug has a plurality of apertures to access an inner end of said socket.
14. The valve guide of claim 13 wherein there are six apertures.
15. The valve guide of claim 1 wherein adjacent one end of said prop is an integral step through which a plurality of apertures extend to said socket.