Check Valves

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• Product Code: Check Valves

Check Valves

Hi-Check Non Return Check Valve (10,000 PSI)

Parker's high performance non-return valves can offer the user a cold working pressure rating up to 10,000 psi/689 bar maximum, with a cracking pressure of 10 psi maximum.

Parker’s Hi Check series high performance non-return valves are designed for unidirectional flow control of fluids and gases in process instrumentation applications. There is a choice of two check valve models, with cold working pressures of 10000 PSI (689 bar) and 6000 PSI (414 bar). Both check valves have an opening (or ‘cracking’) pressure of 10 PSI (0.7 bar). These robust check valves feature a two-piece metal seated body design to minimize any risk of leakage. The Parker check valves are available with a choice of integral male or female NPT, or single- or two-ferrule compression style ends, the compression ends enable users to eliminate the use of taper threads and thread sealant – further reducing the number of potential leakage paths and avoiding system contamination problems. There is a comprehensive range of inlet and outlet connections, covering imperial sizes of 1/4", 3/8” and 1/2", and metric sizes of 6 mm, 10 mm and 12 mm.

The check valves are designed to meet the pressure and temperature requirements of ANSI/ASME B.16.34, as limited by the seat materials. NACE compliant versions are available. As standard, Hi Check valves are manufactured from 316 stainless steel, with duplex and monel versions optionally available. For maximum applications flexibility, there is an extensive choice of O-ring materials, including FPM75 and V1238-95 fluorocarbon rubber, Buna-N, ethylene propylene rubber and highly fluorinated fluorocarbon rubber.

C Series Check Valves

Parker’s C Series Check Valves are designed as a compact, inline check valve. These check valves provide uni-directional flow control of fluids and gases. To help prevent improper installation, all check valves have a flow arrow label with the valve’s crack pressure rating permanently attached. The availability of a wide range of seat materials provide the system designer a variety of uses over a standard, general purpose check valve.

CB Series Check Valves

Parker CB and CBF Series Check Valves are designed for uni-directional flow control of fluids and gases. The

unique floating ball valve design handles demanding services in power generation, chemical processing, oil/

gas production, and other demanding applications. The CB/CBF Series are specifically designed to reduce

check valve maintenance and performance requirements on dual fuel turbines. Specific issues include, but are not limited to seat leakage, coking, repair and maintenance. All of these issues directly affect turbine efficiency, impacting operating costs. The advanced seat materials of the CB/CBF Series Check Valves are particularly suited for higher temperature applications requiring high integrity leak rates and re-sealing capabilities.

CO Series Check Valves

Parker CO Series Check Valves are designed for uni-directional flow control of fluids and gases in industries such as chemical processing, oil and gas production and transmission, pharmaceutical, pulp and paper, power and utilities. The CO Series Check Valve is particularly suitable for applications requiring high integrity leak rates and re-sealing capabilities.

LC Series Lift Check Valves

Parker’s LC-Series Lift Check Valve has been designed for a wide variety of temperature extremes found in power, chemical, petrochemical, oil & gas, and laboratory applications. The LC-Series, ideal for liquid service, has been designed to prevent flow in the reverse direction to within 99.9% of forward flow. The gravity assisted poppet uses back pressure to achieve a seal.