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

    Circle Seal 5132B-4MP-1015 - Relief Valve 1/2 inch Male NPT - 1015 PSI Cracking Pressure - Brass

    List Price: $120.75

    $144.90

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

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

    List Price: $494.60

    $593.52

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

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

    Circle Seal 520-0001-01 Relief Valve 1/8 inch Male MNPT - 5 PSI Cracking Pressure - Stainless Steel

    List Price: $29.40

    $35.28

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

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    In Stock


  4. Circle Seal 559B-1M-25 - 500 Series Relief Valve - Buna-N O-Ring Brass 1/4 in. Male NPT 25 Cracking Pressure

    Circle Seal 559B-1M-25 - Relief Valve 1/4 inch Male NPT - 25 PSI Cracking Pressure - Brass

    List Price: $29.40

    $35.28

    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 532B-1M-30 - 500 Series Relief Valve Viton O-Ring Brass 1/8 in. Male NPT 30 CP

    Circle Seal 532B-1M-30 - Relief Valve 1/8 inch Male NPT - 30 PSI Cracking Pressure - Brass

    List Price: $29.40

    $35.28

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

    Circle Seal 559B-1M-173 - Relief Valve 1/8 inch Male NPT - 173 PSI Cracking Pressure - Brass

    List Price: $29.40

    $35.28

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

    Circle Seal 249B-4PP Check Valve 1/2 inch Female NPT - 2 to 4 PSIG Cracking Pressure - Brass

    List Price: $90.95

    $109.14

    Circle Seal 249B-4PP Female Pipe 1/2 inch Check Valves is 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. p> Learn More

    In Stock


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

    Circle Seal 232B-4PP Check Valve 1/4 inch Female NPT - 0.5 to 1 PSIG Cracking Pressure - Brass

    List Price: $90.95

    $109.14

    Circle Seal 232B-4PP Female Pipe 1/4 inch Check Valves is 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. p> Learn More

    In Stock


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

    Circle Seal 233B-2PP Check Valve 1/4 inch Female NPT - 2 to 4 PSIG Cracking Pressure - Brass

    List Price: $54.10

    $64.92

    Circle Seal 233B-2PP Female Pipe 1/4 inch Check Valves is 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. p> Learn More

    In Stock


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

    Circle Seal 249B-6PP Check Valve 3/4 inch Female NPT - 2 to 4 PSIG Cracking Pressure - Brass

    List Price: $117.75

    $141.30

    Circle Seal 249B-6PP Female Pipe 3/4 inch Check Valves is 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. p> Learn More

    In Stock


products per page

Items 1-10 of 26 total

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Grid List

Air Systems