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. 23% off
    Circle Seal 2259B-3MM Check Valve - 3/8 in. Brass

    Circle Seal 2259B-3MM Check Valve - 3/8 in. Brass

    Regular Price: $26.46

    Sale Price: $20.50

    Circle Seal 2259B-3MM Check Valve - 3/8 in. Brass

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    In Stock


  2. Circle Seal 5100 Series Relief Valve 1/2 in Male NPT 1015 PSI 5132B-4MP-1015

    Circle Seal 5132B-4MP-1015 - 5100 Series Relief Valve Brass 1/2 in. Male NPT 1015 PSI

    $112.30

    The Circle Seal 5100 Series Relief Valve Brass is a 1/2 in. NPT inline relief valve with a relief pressure at 1015 psi. Other relief pressures are available. Please contact your Amron Sales Representative for more information.

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  3. Circle Seal 559B-1M-173 500 Series Relief Valve - 1/8 in. MNPT - 173 Cracking Pressure

    Circle Seal 559B-1M-173 - 500 Series Relief Valve - 1/8 in. MNPT - 173 Cracking Pressure

    $30.96

    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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  4. Circle Seal Relief Valve Naval Brass ASME 1 in MNPT 448 PSI

    Circle Seal M5159N-8ML-448ASME Relief Valve Naval Brass ASME 1 in MNPT 448 PSI

    $474.80

    Circle Seal M5159N-8ML-448ASME Relief Valve Naval Brass ASME 1 in MNPT 448 PSI with Buna N Seat.

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  5. Circle Seal Relief Valve 1/8 in. MNPT 5 PSI Cracking Pressure 520-0001-01

    Circle Seal 520-0001-01 Relief Valve 1/8 in. MNPT - 5 PSI Cracking Pressure

    $27.35

    Circle Seal 520-0001-01 Relief Valve 1/8 in. MNPT - 5 PSI Cracking Pressure.

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

    Circle Seal 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. Opening pressures are as low as 0.1 psi. The poppet closes at zero flow before the turn flow starts.

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

    Circle Seal 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. Opening pressures are as low as 0.1 psi. The poppet closes at zero flow before the turn flow starts.

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  8. Circle Seal 200 Series Check Valve 1/4 inch FNPT Brass 233B-2PP

    Circle Seal 233B-2PP 200 Series Check Valve - 1/4 inch FNPT Brass

    $50.30

    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. Opening pressures are as low as 0.1 psi. The poppet closes at zero flow before the turn flow starts.

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    In Stock


  9. Circle Seal 200 Series Check Valve 3/4 inch FNPT Brass 249B-6PP

    Circle Seal 249B-6PP 200 Series Check Valve - 3/4 inch FNPT Brass

    $113.05

    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. Opening pressures are as low as 0.1 psi. The poppet closes at zero flow before the turn flow starts.

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    In Stock


  10. Circle Seal 200 Series Check Valve 3/4 inch FNPT Brass 259B-6PP

    Circle Seal 259B-6PP 200 Series Check Valve 3/4 inch FNPT Brass

    $113.05

    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. Opening pressures are as low as 0.1 psi. The poppet closes at zero flow before the turn flow starts.

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Items 1-10 of 35 total

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Circle Seal