S model check valves are direct operated, line cotact seat, guided poppet check valves. Guided poppets vs a “ball” provide more stable operation, more assurance for a line contact seat, and reductions in flow noise. The line contact seat is an interference fit where the seat areas are at slight differential angles to permit a true line contact seat vs a matched mating surface.
•Sizes 10 to 30
•For threaded connection
•Leak-free isolation in one direction
•Port connection: SAE 8 – SAE 24