Parker updates subcritical CO2 valves

By team, Feb 03, 2016, 12:43 1 minute reading

Responding to requests from OEMs to raise the maximum rated-pressure of valves for subcritical CO2 refrigeration systems, Parker Hannifin (based in Washington, Missouri) did so for several products that it displayed at the AHR Expo in Orlando, Florida, last week.

Parker raised the pressure rating for its solenoid valves (E2 up to E10) and its electronic expansion valves (SER AA, A, B and C) to 70-bar/1,015 psig from 48-bar/700 psig. In the second quarter, Parker plans to release ball valves with a pressure-relief check feature, also rated for 70-bar/1,015 psig.

“We’re doing what we can do to come up with better components [for CO2 systems],” said Gordon Coates III, senior product engineer for the Sporlan Division of Parker Hannifin.

At the higher pressure ratings, systems can have higher pressure release points in safety valves, making it less likely that systems will lose CO2 charge, noted Coates. This means that end users can avoid using auxiliary power or condenser units.

Parker also showcased its transcritical products, including gas cooler valves released last autumn, and flash gas bypass valves due out in the first quarter of 2016. They are rated for 140-bar/2,030 psig. Also displayed were transcritical filter driers, rated for 155-bar/2,250 psig.

In April, Parker’s Micro Thermo unit plans to release the stand-alone controller for gas cooler and flash gas bypass valves.

By team (@r744)

Feb 03, 2016, 12:43

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