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Products - High Refrigerant Pressure

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Water Cooled Regulating Systems Utilizing R410a Refrigerant
Better performance, lowers cost, and stops depletion of the ozone layer

R410a Refrigerant based HVAC systems
The Environmental Protection Agency (EPA), through the Clean Air Act, is regulating the production and use of refrigerants. These changes will eventually eliminate air conditioning and heat pump refrigerants containing chlorine, due to growing concern about ozone depletion. R410A is an HFC refrigerant that has been developed to replace the HCFC refrigerant R22 and meets these standards.

What makes R410a unique?
Systems using R410a refrigerant operate at pressures approximately 1.6 times higher than systems using R22 or R407c. Water cooled systems utilizing R410a refrigerant demand special regulating valves first introduced by Metrex Valve in 2000. Higher system pressures also make longer pipe separations achievable. Compressor displacement decreases by 30% and the heat transfer ratio improves by 35%. This allows for the use of smaller physical size system-components such as condensers, compressors, evaporators.

Click on pictures for larger images, click on product names for more information.

Pictures of some Metrex R410a Valves:

840 Series

 

THREADED (NPT) ENDS -
2-WAY

3/8" 840P-37-SE
1/2" 840P-50-SE
3/4" 840P-75-SE

   

WCCW-HR Series

 

2-WAY THREADED (NPT) ENDS
REFRIGERANT PRESSURE ACTUATED

3/8"
1/2"
3/4"
1"

WCCWHR-3050
WCCWHR-3060
WCCWHR-3070
WCCWHR-3080

3-WAY UNION ENDS
REFRIGERANT PRESSURE ACTUATED

3/4"
1"

WCMEHR-4075-3W
WCMEHR-4100-3W

More about R410a
Although R410A is a zeotropic refrigerant, the whole refrigerant behaves almost as if it was an azeotrope. This is because there are only two refrigerants in the mixture and these two refrigerants have very close boiling points at constant pressure. R410A is a 50:50 mixture by weight of R32 and R125. Temperature glide is very small (less than 0.17K). It is a direct application replacement for R22 and is used in a variety of air conditioning and refrigeration applications in a variety of markets, including appliance, construction, food processing, and supermarkets. Production of R22 in the United States is scheduled for termination in 2015.

Metrex Valve Corp.
505 South Vermont Ave., Glendora, CA 91741 USA
Phone: 800.266.4027 Fax: 626.335.1514
Email: info@metrexvalve.com

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