Seat support and threaded seat for valve with quadruple seat

Abstract

Threaded seat support for valve with quadruple seal, such as aspiration and exhaust check valves used in reciprocating hydraulic pumps, wherein the threaded seat support cap is comprised by a planar frustoconical metal body, inside which a thread has been made at a central region comprised between the upper mouth forming a larger diameter chamber and a lower cylindrical region, of smaller diameter, defining a planar step adjacent the end of the thread fillet; while the valve body provides the seat at its upper surface, which has a larger diameter forming a projecting peripheral edge, followed by a cylindrical strip of smaller diameter which has a peripheral channel carrying an O-ring; following the cylindrical strip thread fillets are arranged at a smaller diameter region; while that inside the valve body there is an axial drill for a guide rod of the blocking disk of the valve, surrounded by the fluid passage conduits; the bodies of the threaded seat, of the blocking disk and, at least partially, of the guide rod, are made by a crystalline homopolymer acetal resin (Delrin) or by a long chain synthetic polymer amide with periodical amide groups ad a part of the main chain (Nylon), defining the assembly at least four tight seals.

Dependencies are inferred from the claim text.