Parker Hannifin CO Series Check Valves

Parker's CO Series Check Valves are designed for high integrity, leak proof systems with uni-directional flow control of critical fluids and gases up to 6,000 PSI (414 BAR). These inline check valves are suitable for instrumentation applications requiring high integrity leak rates and re-sealing capabilities.

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CO Series

197 items

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  • Parker 4Z-CO4L-10-BN-SS
    4Z-CO4L-10-BN-SS Parker CO Series O-Ring Poppet Check Valve
    4Z-CO4L-10-BN-SS

    Parker Hannifin

    Product Type: Check Valves

    End 1 Type: Single Ferrule Compression

    End 2 Type: Single Ferrule Compression

    Parker CO-Series O-Ring Poppet Check Valve, 316 SS body, 1/4" single ferrule tube fitting ends, 10 psig crack pressure, Buna-N rubber seal
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  • Parker CPI 4Z-CO4L-1/3-V-SS
    4Z-CO4L-1/3-V-SS Parker CO-Series O-Ring Poppet Check Valve
    4Z-CO4L-1/3-V-SS

    Parker Hannifin

    Product Type: Check Valves

    End 1 Type: Single Ferrule Compression

    End 2 Type: Single Ferrule Compression

    Parker CPI CO-Series O-Ring Poppet Check Valve, 316 SS body, 1/4" single ferrule tube fitting ends, 1/3 psig crack pressure, highly fluorinated fluorocarbon seal,
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  • Parker 4Z-CO4L-1/3-KZ-SS
    4Z-CO4L-1/3-KZ-SS Parker CO Series O-Ring Poppet Check Valve
    4Z-CO4L-1/3-KZ-SS

    Parker Hannifin

    Product Type: Check Valves

    End 1 Type: Single Ferrule Compression

    End 2 Type: Single Ferrule Compression

    Parker CO-Series O-Ring Poppet Check Valve, 316 SS body, 1/4" single ferrule tube fitting ends, 1/3 psig crack pressure, Kalrez seal
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  • Parker Co Series Check Valve
    4Z-CO4L-1/3-BN-SS Parker Check Valve
    4Z-CO4L-1/3-BN-SS

    Parker Hannifin

    Product Type: Check Valves

    Parker CO Series Check Valve, 1/4" x 1/4", CPI Single Ferrule Compression x CPI Single Ferrule Compression, 6000 PSIG CWP, 1/3 PSI Cracking, Stainless Steel Body, Nitrile Rubber Seat/Seal, In-Line, Poppet, Check Valve.
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  • Parker 4V-CO4L-5-V-SS
    4V-CO4L-5-V-SS Parker CO-Series O-Ring Poppet Check Valve
    4V-CO4L-5-V-SS

    Parker Hannifin

    Product Type: Check Valves

    End 1 Type: VacuSeal

    End 2 Type: VacuSeal

    Parker CO-Series O-Ring Poppet Check Valve, 316 SS body, 1/4" face seal (VacuSeal) ends, 5 psig crack pressure, fluorocarbon rubber seal
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  • Parker 4V-CO4L-5-KZ-SS
    4V-CO4L-5-KZ-SS Parker CO Series O-Ring Poppet Check Valve
    4V-CO4L-5-KZ-SS

    Parker Hannifin

    Product Type: Check Valves

    End 1 Type: VacuSeal

    End 2 Type: VacuSeal

    Parker CO-Series O-Ring Poppet Check Valve, 316 SS body, 1/4" face seal (VacuSeal) ends, 5 psig crack pressure, Kalrez seal
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  • Parker 4V-CO4L-5-BN-SS
    4V-CO4L-5-BN-SS Parker CO Series O-Ring Poppet Check Valve
    4V-CO4L-5-BN-SS

    Parker Hannifin

    Product Type: Check Valves

    End 1 Type: VacuSeal

    End 2 Type: VacuSeal

    Parker CO-Series O-Ring Poppet Check Valve, 316 SS body, 1/4" face seal (VacuSeal) ends, 5 psig crack pressure, Buna-N rubber seal
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  • Parker 4V-CO4L-50-KZ-SS
    4V-CO4L-50-KZ-SS Parker CO Series O-Ring Poppet Check Valve
    4V-CO4L-50-KZ-SS

    Parker Hannifin

    Product Type: Check Valves

    End 1 Type: VacuSeal

    End 2 Type: VacuSeal

    Parker CO-Series O-Ring Poppet Check Valve, 316 SS body, 1/4" face seal (VacuSeal) ends, 50 psig crack pressure, Kalrez seal
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