Patent ID: 7036523

Claim:
A check valve in combination with a submersible pump for discharging fluid, said check valve comprising: a valve body including a valve inlet for receiving fluid discharged from said pump, said valve body including a valve outlet for discharging fluid flowing from said valve inlet; a valve poppet closure member including a guide member; a retainer member engaged with and supporting said guide member of said poppet and allowing limited movement of said guide member between valve open and closed positions, said retainer member including means thereon cooperable with means on said valve body to provide for inserting a valve assembly comprising said poppet and said retainer member through said valve outlet for retaining said valve assembly in said valve body to prevent flow of fluid from said valve outlet to said valve inlet, said retainer member being operable to be engaged with and rotated relative to said valve body to releasably retain said valve assembly in said valve body; and said retainer member includes a valve seat thereon engageable with means on said poppet for preventing flow of fluid from said valve outlet to said valve inlet.