Patent ID: 8096319
Filing Date: 2012-01-17
Classification: F16K,Y10T

Abstract:
1. A check valve comprising: a housing; a stepped bore having a small diameter section and a large diameter section, the small diameter section forming a valve seat adjacent to the large diameter section, the large diameter section having a circumferential wall formed with a plurality of guide ribs; a ball guided in the large diameter section by the guide ribs; and a resilient retaining element fixed in the housing over the large diameter section opposite from the valve seat, the retaining element capturing the ball in the large diameter section and spring loading it toward the seat when the valve is open, wherein the retaining element is a single piece retaining element with at least one radially inward directed projection forming an end stop which limits movement of the ball and a spring tongue that exerts a resilient force on the ball, the projection includes a radially outer end fixed to the retaining element and a radially inner free end, wherein the spring tongue is connected to an outer diameter of the retaining element at only a single point.