Patent ID: 8312889
Filing Date: 2012-11-20
Classification: F16K,Y10T

Abstract:
1. A combination flow control valve and reverse flow check valve comprising: a housing defining a central, fluid conveying channel therethrough, said housing including a substantially circular seat having a first diameter located proximate a desired upstream end of the housing, a tubular extension and an addition including a tubular neck received within said tubular extension, said tubular neck including a pair of diametrically opposed and aligned holes, and further including a blocking element received in said holes of said tubular neck, said blocking element extending transversely across said channel and retained against transverse movement by said tubular extension; a shiftable valve element positioned within the housing for controlling the flow of liquid through the channel; and a substantially spherical check element having a second diameter which is greater than said first diameter positioned within the housing in an upstream position relative to the shiftable valve element in regard to the desired direction of flow for inhibiting backflow of liquid through the channel, wherein said channel has a chamber having a third diameter, said third diameter being greater than said second diameter.