Patent ID: 6892757

Claim:
A hydraulic valve, comprising: a valve chest forming a substantially cylindrical internal chamber terminating at one end in a facial rim and at the other end with an externally threaded section and a conical opening for receiving a compression ring surrounding a connecting pipe retained in engagement with the conical opening by a nut threaded onto the threaded section; a snap ring mounted coaxially in the chamber; a valve disc provided with a conical rim and mounted for movement relative to the chamber between an open position in which the conical rim is removed from the facial rim and a closed position in which the conical rim engages the facial rim; a cylindrical insert member of substantially sprocket-like cross-section for forming a plurality of valve passages with the internal wall of the chamber permeated by the valve stem and mounted in the chamber for movement against and away from the snap ring; a valve stem for supporting the valve disc and permeating the insert member; a safety nut provided on the valve stem at a face of the valve disc opposite the chamber; and a valve spring circumscribing the stem for biasing the valve disc into the open position thereof.