REFRIGERANT PRESSURE-RELIEF VALVE with POP-EYETM + ACT? H5600

Pressure-Relief Valve with POP-EYE + ACT

INTRODUCTION
Designed to provide emergency relief from excessive pressure
in refrigerant-containing vessels, they are built in strict
conformance with ASME Boiler and Pressure Vessel Code
requirements for safety relief devices. Each valve bears the
ASME code symbol of certification (UV). Their capacities
are rated by the National Board of Boiler and Pressure Vessel
Inspectors. These tamper-resistant valves are accurately set
and sealed by qualified technicians at the factory. POP-EYE
will be standard on all H56xx series valves beginning with the
H56xx”R” series in July 2019. All other H56xx series valves
will become standard with POP-EYE by August 2019.
APPLICATIONS
Hansen pressure-relief valves help meet the requirements
of ANSI/ASHRAE 15 Safety Standard for Refrigeration
Systems as well as other worldwide codes. This standard
requires pressure vessels of all refrigeration systems
to be protected by a pressure-relief device or other
approved means to safely relieve pressure in the event
of fire or other abnormal conditions. Once installed,
a properly selected Hansen pressure-relief valve is
ready to vent to atmosphere any temporary excessive
overpressure inside of a vessel. After discharge,
these valves will attempt to reseat to minimize loss of
refrigerant. However, once any relief valve has discharged,
it must be replaced as soon as possible because debris
may have settled on the seat during discharge.
Hansen pressure-relief valves should be connected to
the vapor space of refrigerant vessels, heat exchangers,
oil pots, oil stills, pilot receivers, and elsewhere as may
be required by various codes.
Where dual pressure-relief valves are required, Hansen
offers the three-way valves and other components
necessary for assembly; see page 4. Rupture disc
assemblies are required when using Hansen pressurerelief valves for halocarbon applications because the high
cost of such refrigerants demands extreme tightness,
see bulletin K209.
Also, see Bulletin K129 for information on the EZ-SRV
Relief Valves. These pressure-relief valves offer a cartridge
style design for ease of replacement without disturbing
the piping. EZ-SRV pressure-relief valves are available
in pressure ratings to 600 psi (matching the H5600 “R”
series capacities through 400 psi). Liquid relief valves
are also available in the EZ-SRV series. EZLQ relief valves
are designed and rated for liquid applications.
ORDERING INFORMATION