Gas Systems

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  1. Circle Seal M5159B-8ML-300 - 5100 Series Relief Valve Brass 300 PSI 1 in. Male NPT Buna-N O-Ring with Lockwire Option

    M5159B-8ML-300 - 5100 Series Relief Valve Brass 300 PSI 1 in. Male NPT Buna-N O-Ring with Lockwire Option

    $416.15

    Circle Seal 5100 Series Relief Valve is a PED certified model that ensures a zero leakage under 95% of cracking pressure. The valve is entrusted with a wide range of cracking pressure and tamper-proof adjustments.

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

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

    $34.54

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

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

    $27.35

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

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

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

    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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  8. 249B-2PP - Series 200 Female Pipe Check Valve - 1/4 in. - Brass - Buna-N O-Ring - Crack Pressure 2-4 psig

    249B-2PP - Series 200 Female Pipe Check Valve - 1/4 in. - Brass - Buna-N O-Ring - Crack Pressure 2-4 psig

    $50.30

    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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  9. Circle Seal 220B-4PP-2 Check Valve Brass 1/2 in. FNPT Teflon Mod for 5000 PSIG 2 CP

    220B-4PP-2 Check Valve Brass 1/2 in. FNPT Teflon Mod for 5000 PSIG 2 CP

    $115.50

    Circle Seal 220B-4PP-2 Check Valve Brass 1/2 in. FNPT Teflon Mod for 5000 PSIG 2 CP

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  10. Circle Seal 200 Series Check Valve 232B-6PP

    232B-6PP 200 Series Check Valve - 3/4 in.

    $113.05

    The Circle Seal 232B-6PP 200 Series Check Valve is quick opening and has a large flow capacity.

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