Mueller AI15504 Relief Valve 318518-761 this is an emergency safety

this is an emergency safety relief valve and should never be used as a primary pressure regulator or operating control

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The Carrier 50DK500705 Exhaust Regulator is a critical OEM replacement component designed to maintain precise atmospheric and internal pressure balances within commercial rooftop units and packaged HVAC systems

Mueller AI15504 Relief Valve 318518-761 this is an emergency safetyThe Mueller AI15504 Relief Valve is a veteran grade SafetyMaster pressure relief valve designed for mission critical overpressure protection in commercial refrigeration and HVAC systems. Engineered for high side application on liquid receivers, this straight through 425 PSI PRV features a 1 2 inch NPTFE inlet and a 5 8 inch flare outlet connection. The brass body construction, paired with a stainless steel spring and a resilient neoprene seat disc,