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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
these valves are factory-set and sealed to maintain their ASME certification
Wide Media Compatibility: Certified for use with air
To maintain peak efficiency
The unit utilizes a silicone-compatible diaphragm and a plated housing for long-term reliability in environments containing air or non-corrosive combustion by-products
Hoffman Specialty 401485 Water Vent L99H008 these valves are factory-set andThe 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
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