Circle Seal

Circle Seal Controls

Circle Seal Controls


Circle Seal provides world class technology as a global leader for fluid control solutions for check valves, relief valves and more!  Circle Seal Controls designs and manufactures to customers' ever evolving requirements and specifications.  Some of their valve lines include the 200 Series Check Valves500 Series Relief Valves and 5100 Series Relief Valves.

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  1. Circle Seal 200 Series Female Pipe Check Valve - 1/2 inch - Brass - Neoprene O-Ring - Crack Pressure 2-4 psig 233B-4PP

    233B-4PP - Series 200 Female Pipe Check Valve - 1/2 in. - Brass - Neoprene O-Ring - Crack Pressure 2-4 psig

    $84.60

    Circle Seal Series 200/H200 Female Pipe Check Valves are absolutely bubble tight in leakage tests. No Leakage whatsoever at any Differential Pressure.

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  2. Circle Seal 200 Series Check Valve 1/2 inch FNPT Brass 232B-4PP

    232B-4PP 200 Series Check Valve 1/2 inch FNPT - Brass

    $84.60

    Circle Seal Series 200 Female Pipe Check Valves are absolutely bubble tight in leakage tests. No Leakage whatsoever at any Differential Pressure. This check valve has a Quick Opening - Positive Closing, even at extremely low pressure differential.

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  3. Circle Seal 200 Series Check Valve 1/2 inch FNPT Brass 249B-4PP

    249B-4PP 200 Series Check Valve 1/2 inch FNPT - Brass

    $84.60

    Circle Seal Series 200 Female Pipe Check Valves are absolutely bubble tight in leakage tests. No Leakage whatsoever at any Differential Pressure. This check valve has a Quick Opening - Positive Closing, even at extremely low pressure differential.

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  4. Circle Seal 559T1-2M-20 - 500 Series Relief Valve Buna-N O-Ring 316 Stainless Steel 1/4 in. Male NPT 20 CP

    559T1-2M-20 - 500 Series Relief Valve Buna-N O-Ring 316 Stainless Steel 1/4 in. Male NPT 20 CP

    $66.95

    Circle Seal Series 500 Relief Valves have a resilient seal design that prevents leakage. Sealing efficiency increases with increased pressure up to cracking pressure. When system pressure overcomes spring force, poppet opens. Seal provides zero leakage at reseat.

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  5. Circle Seal 259B-2PP-15 Check Valve Brass Buna-M Seat 1/4 in. Female NPT 15 PSI

    259B-2PP-15 Check Valve Brass Buna-M Seat 1/4 in. Female NPT 15 PSI

    $89.25

    Circle Seal 259B-2PP-15 Check Valve Brass Buna-M Seat 1/4 in. Female NPT 15 PSI

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  6. 259B-3PP-.15 Check Valve Buna-N 3/8 in. Brass .15 Cracking Pressure

    259B-3PP-.15 Check Valve Buna-N 3/8 in. Brass .15 Cracking Pressure

    $62.60

    Circle Seal 259B-3PP-.15 Check Valve Buna-N 3/8 in. Brass .15 Cracking Pressure Learn More
  7. 249B-3PP - 200-PP Series Check Valve - Buna-N O-Ring Brass 3/8 in.

    249B-3PP - 200-PP Series Check Valve - Buna-N O-Ring Brass 3/8 in.

    $60.25

    Circle Seal 249B-3PP - 200-PP Series Check Valve - Buna-N O-Ring Brass 3/8 in.

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  8. 249B-4PP-0.3 - 200-PP Series Check Valve - Buna-N O-Ring Brass 1/2 in. .2 CP

    249B-4PP-0.3 - 200-PP Series Check Valve - Buna-N O-Ring Brass 1/2 in. .2 CP

    $95.50

    Circle Seal 249B-4PP-0.3 - 200-PP Series Check Valve - Buna-N O-Ring Brass 1/2 in. .2 CP

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  9. Circle Seal 259B-4PP Check Valve 1/2 in.

    259B-4PP Check Valve 1/2 in.

    $84.60

    Circle Seal 259B-4PP Check Valve 1/2 in.

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  10. Circle Seal 259B-4PP-2 Check Valve Brass 1/2 in Female NPT 2 PSI

    259B-4PP-2 Check Valve Brass 1/2 in Female NPT 2 PSI

    $95.50

    Circle Seal 259B-4PP-2 Check Valve Brass 1/2 in Female NPT 2 PSI

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10 Item(s)

per page

Set Descending Direction