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National Board Certified. Eliminates Hazards. Facilitates Compliance.
Detects and indicates when a relief valve lifts
LED Indication:
Bright LED with 360° visibility
Battery operated, 7+ years life
Blinks for 2+ weeks after a lift
Not for retrofit on existing valves
No setup, calibration, or wiring required
No false detection
Valve is National Board Certified
No change in capacity ratings
No piping change
Drop in replacement for existing valves
Intended for one-time use
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.
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