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Parker Hannifin introduces new relief valve


The instrumentation products division of Parker Hannifin, a global leader in motion and control technologies has launched a new pressure relief valve for low pressure instrumentation applications up to 400 PSI.

The new HPRV valve provides a simple solution for building environmental and equipment protection for a variety of process and laboratory instrumentation applications.

CE marked and certified to the highest Category-IV level of the Pressure Equipment Directive (PED), the HPRV valve is supplied pre-set to six pressure ranges, from 10 to 400 PSI. The chosen cracking pressure is laser etched onto the valve body at the factory. Another variant of the valve design is available for higher pressure applications.

Parker supplies each HPRV low pressure valve as a complete item including the spring that determines the cracking pressure, under a single order number to simplify purchasing. The valve is 100 per cent PED certified, and requires no additional paperwork or approvals to use the product. The valve has a 5.2mm (0.203 inch) orifice.

It comes with either twin-ferrule A-LOK or single-ferrule CPI compression tube fitting ends, eliminating threaded connections and the potential problems that are associated with using thread sealants such as PTFE tape. The valve's outlet port can release increased pressure to atmosphere, or be configured to duct media to a safe place.

The cracking pressure is determined by one of six factory-fitted springs. These provide a choice of six cracking pressure ranges: 10-25, 25-50, 50-100, 100-150, 150-225 or 225-400 PSI. A locking wire may be fitted to secure the chosen pressure setting and guard against tampering. O-ring seals adapt the HPRV valve for different types of media and operating temperatures from -57° to 204° C (-70° to + 400° F).