Patent ID: 9657855
Date: 2017-05-23
CPC Classifications: F16K,Y10T

Claim:
1. A combination flow control valve and reverse flow check valve comprising: a housing defining a central, fluid conveying channel therethrough, wherein the channel extends longitudinally along an axis from a desired upstream opening end to a desired downstream outlet end; a shiftable valve element positioned within the housing for controlling the flow of liquid through the channel; a check element positioned within the housing in a downstream position relative to the shiftable valve element in regard to a desired direction of flow for inhibiting backflow of liquid through the channel and past the valve element, the housing including a circumferentially-extending shoulder extending radially inwardly in the channel between the shiftable valve element and the check element, the shoulder defining a substantially circular opening presenting a seat for the check clement, the seat having a first diameter; and a check element retainer located proximate the desired downstream outlet end of the housing and positioned in the channel for maintaining the check element in the housing, the check element retainer including an inner circular-shaped hub defining a central opening presenting a second diameter.