Hoffman Specialty 401485 Water Vent R-22 it integrates a simplified well-insertion

it integrates a simplified well-insertion design that slides directly into standard thermowells

maintaining the pressure switch closure required for the ignition sequence

Installing a 120V element into a lower voltage system will result in inadequate heating and ignition failure

this unit provides the flexibility needed for field adjustments

Hoffman Specialty 401485 Water Vent R-22 it integrates a simplified well-insertionThe 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