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Q. Why
should architects and building engineers select a new HVAC system using
R410a – a non ozone-depleting
refrigerant?
A. Because by selecting R-410a you eliminate the possibility
that refrigerant leaking from your system will contribute to the hole
in the ozone layer. R410A contains no chlorine, it is ozone and
climate responsible.
Plus, R410a allows higher efficiencies than R22, so it not only
makes sense environmentally — it
also makes sense from an economic standpoint.
Q. What is the US Governments
position on R410a?
A. Production of R22 in the United States is scheduled for termination
in 2015. R410a is the best alternative to R22 available today.
Q. Why do HVAC systems using R410a need special high pressure
valves?
A. 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 to manage
the heat transfer process.
Q. What if we have a special R410a control valve requirement?
A. Metrex has many off-the-shelf R410a
high refrigerant pressure regulating valve solutions. Our experience engineers can design
or modify existing valves to meet all your R410a system requirements.
Q. Can I get valves for more than 150
psi inlet?
A. Of course! See either Commercial
& Industrial Buildings & Products or High
Pressure Water Sides.
Q. Can
I get valves with high refrigerant R410a?
A. Indeed! See either Standard Products or High
Refrigerant Pressure valves.
Q. How do I size a valve?
A. If you know how many gpms you need,
divide it by the Cv squared (Cv2). Or, check out one of
the following: Metrex Matrix, About
Our Valves or Sizing A Valve.
Q. Do you have repair kits?
A. Yes - Call our Customer Service Department at 1-800-266-4027.
Also, see our Spare Parts and Contact
Us pages.
Q. When I replace bellows do I need gaskets?
A. There are no gaskets. Isolate
the water supply, unscrew the old bellows and replace with new
bellows. See our Spare Parts page.
Q. Do I need to shut down the system?
A. No, isolate the water supply.
Q. Can I install valve upside down, downstream or upstream, inside out?
A. Please see our About Our Valves or Install
Schematics pages.
Q. Can I buy valves directly from Metrex?
A. Yes - Call our Customer Service Department at 1-800-266-4027
or see our Contact
Us page.
Q. Do you have a distributor in my area?
A. Call our Customer Service Department at 1-800-266-4027 or see our Contact
Us page.
Q. Do you accept credit cards?
A. Yes
Q. Can I download tech manuals and drawings?
A. We have some drawings,
but no tech manuals. Please call our Customer Service Department
at 1-800-266-4027 or see our Contact Us page.
Q. How did Metrex get such great customer service gals?
A. From a galaxy far,
far away
Q. How long has Metrex been in business?
A. See our About Us page.
Q. Why should I do business with Metrex?
A. See our Mission page.
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