Henry PRV 1/2"MNPT inlet x 5/8"MSAE outlet 40.0 BAR (580 psi)

The function of a Pressure Relief Valve is to protect against overpressure. For safety reasons, excessive over-pressure in any part of the
refrigeration system must be avoided
Applications
A typical application for a Henry Technologies pressure relief valve (PRV)
is to protect a liquid receiver from being over-pressurised. In the event
of a fire, any liquid refrigerant inside the receiver will evaporate resulting
in an increase in pressure. The PRV will safely control this increase in
pressure by venting the vapour from the receiver. Another application is
to protect equipment from compressor over-pressure.
Henry Technologies pressure relief valves are designed to discharge
vapour and should not be used to vent liquid refrigerant. The valves are
“back-pressure dependent” and are therefore required to discharge to
atmosphere.
The brass and stainless steel series valves are suitable for use with
HCFC and HFC refrigerant gases. The stainless steel series valves are
also suitable for ammonia.
Once a PRV has discharged, replacement is recommended, as the set
pressure can no longer be guaranteed. Refer to Installation Section for
further information.
In line with the Institute of Refrigeration Guidelines (UK), Henry Technologies recommend that a PRV should be replaced at least every 5 years. These intervals may have to be reduced if other regulations apply.
It is recommended to have a relief valve pressure setting at least 25%
higher than the maximum system operating pressure. The PRV set
pressure should not be higher than the design pressure (MWP) of the vessel

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