Description
Xylem-Hoffman Specialty Series 78 Water Vent — 3/4″ | 150 PSI Max
The Xylem-Hoffman Specialty 401485 is a Series 78 automatic water vent designed for reliable air elimination in hydronic heating and hot water systems. Engineered to automatically purge trapped air from piping and equipment, this vent helps maintain peak system efficiency, prevent air-binding, and protect circulating pumps and heat exchangers from damage caused by air pockets.
Key Features
- Series 78 automatic water vent for hydronic and hot water heating systems
- 3/4″ connection size for straightforward installation into standard piping
- 150 PSI maximum working pressure rating for compatibility with a wide range of system pressures
- Automatic air venting operation — no manual intervention required during normal system operation
- Compact, durable construction built to Hoffman Specialty’s industry-leading quality standards
- Ideal for use on boilers, hydronic distribution piping, and terminal heating equipment
Specifications
- SKU: 401485
- Series: 78 Water Vent
- Connection Size: 3/4″
- Maximum Working Pressure: 150 PSI
- Brand: Xylem-Hoffman Specialty
Applications
- Hydronic heating systems
- Hot water distribution piping
- Boiler system air elimination
- Commercial and residential heating equipment
Trust Xylem-Hoffman Specialty’s proven engineering to keep your hydronic system running air-free and at peak performance. The 401485 Series 78 Water Vent is a dependable solution for HVAC professionals and mechanical contractors who demand quality and reliability.







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