Hoffman Specialty 401485 Water Vent 320735-701 requiring a technician to identify

requiring a technician to identify and clear the vent obstruction

What boiler models use the 511-330-186

contractors can achieve a direct

including PTAC units and water source heat pumps (WSHP)

As a direct replacement for Johnson Controls K15DS-36 and identical to the K15DA-36H

Hoffman Specialty 401485 Water Vent 320735-701 requiring a technician to identifyThe 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