A housing, defining an outer portion of a fluid channel; a seat disposed within said housing; a valve element positionable within said housing by fluid flow therethrough, said valve element, by application thereto of reverse fluid flow, being held in engagement with said seat for closing said check valve and,CHECK VALVES by application of forward fluid flow thereto, being unseated for opening said check valve; and an apertured guide body disposed within said housing and defining, with said valve element, under conditions of normal fluid flow, an inner wall of said fluid passage, Check Valvessaid apertures accommodating reverse flow therethrough for application of said reverse flow to said valve element for seating said valve element and closing said check valve, said check valve being characterized by: said guide body being mounted within the interior of said housing by a plurality of spaced struts, each of said struts being disposed between said housing and guide body and extending in directions defined by directional components both radially outward from and tangential to said guide body.

A fluid check valve comprising: a housing, defining an outer portion of a fluid channel; a seat disposed within said housing; a valve element positionable within said housing by fluid flow therethrough, said valve element, by application thereto of reverse fluid flow being held in engagement with said seat for closing said check valve and, by application of forward fluid flow thereto, being unseated for opening said check valve; and an apertured guide body including leading and trailing apertured, streamlined faces and disposed within said casing and defining, with said valve element under conditions of normal fluid flow, an inner wall of said fluid passage, said apertures accommodating reverse flow therethrough for application of said reverse flow to said valve element for seating said valve element and closing said check valve, Check Valves said check valve being characterized by said valve element comprising a concave shell, forward fluid flow through said valve impinging on an exterior face of said valve element unseating said valve element such that said leading guide body face is received at least in part interiorly of said valve element.

MORE NEW