Circle Seal Controls

The Circle Seal 200 Series Check Valves 0 to 3000 psig boasts a large flow capacity and with quick opening/positive closing and zero leakage.

The Circle Seal 249B-6PP - 200-PP Series Female Pipe Check Valve are absolutely bubble tight in leakage tests.

No Leakage whatsoever at any Differential Pressure. Circle Seal Check Valves are absolutely bubble tight in leakage tests.

Circle Seal Series 500 Relief Valves have a resilient seal design that prevents leakage.

Circle Seal 5100 Series Relief Valves are tested and tried under real-life conditions to suit the commercial diving industry.

Circle Seal 200-PP Series Female Pipe Check Valve offers reliable protection against reverse flow with no leakage under extremely low pressure differential.

Circle Seal 249B-2PP Circle Seals - 1/4 in. Brass Buna N O-Ring Temp Range -65 Degree F/+250 Degree F Std Crack Press 2-4 psig

Circle Seal 10086-5 Adjustment Tool for the 500 Series Relief Valve