Hoffman Specialty 401485 Water Vent 320735-701 With a 0-25 psi control

With a 0-25 psi control range and a dedicated pressure loss alarm

including PTAC units and water source heat pumps (WSHP)

Liquid Handling Resilience: Large internal volume protects the hermetic reciprocating valves from damage caused by occasional liquid slugging

and N55BU-M1-3/4

the HUHAA548 features a built-in 24V control transformer

Hoffman Specialty 401485 Water Vent 320735-701 With a 0-25 psi controlThe Hoffman Specialty 401485, or Model 78 Water Main Vent Valve, is a high capacity automatic air vent designed for efficient air elimination in hydronic heating and cooling systems. Engineered for closed loop hydronic systems, this vent features a 3 4" NPT connection and is built to withstand a maximum pressure of 150 PSI. Its primary function is to purge air from water mains and large distribution lines, preventing air bound system issues that lead