Bell & Gossett Water Vent Valves
Model 550 – Part No. 401476 – Air Chamber
- For use on convectors which are not provided with built-in air chambers or air collection fittings • Brass construction.
- 1⁄4″ NPT straight shank connection tapped at the top for 1⁄8″ NPT connection
- 6 cubic inch (98.3cm) volume
- Maximum water pressure 100 psig (6.9 bar)
- Maximum steam pressure 25 psig (1.7 bar)
Model 508 – Part No. 401475 Water Vent Valve
- For automatic or manual venting systems
- Ideal for use with Model 550 Air Chamber
- Disc-type vent
- Built-in check valve
- Cartridge with discs can be replaced without draining the system
- 1⁄8″ NPT straight shank
- Maximum water pressure 50 psig (3.5 bar)
- Maximum pressure 50 psig (3.5 bar)
Model 790 – Part No. 401479 Water Vent Valve
- For removing air from convectors, baseboard and wall radiation
- Safety drain connection for discharging moisture
- Fitting and ferrule for 3⁄16″ (4.8mm) OD tubing
- Telescopic siphon tube
- 1⁄8″ NPT straight shank
- Maximum operating pressure 30 psig (2.1 bar)*
- Maximum pressure 30 psig (2.1 bar)
Model 791 – Part No. 401482 Water Vent Valve
- For convectors and small mains
- Safety drain connection for discharging moisture
- Fitting and ferrule for 3⁄16″ (4.8mm) OD tubing
- Telescopic siphon tube
- 1⁄4″ NPT straight shank
- Maximum operating pressure 50 psig (3.5 bar)*
- Maximum pressure 50 psig (3.5 bar)
Model 792 – Part No. 401494 High Pressure Water Vent Valve
- For releasing air from hot or cold water or glycol mains,hydronic heating and chilling systems, storage and processing tank filters, centrifugal pumps with specific gravity greater than 0.7
- Cast iron body and cover, stainless steel interior
- Maximum operating pressure 250 psig (17.3 bar)*
- Maximum hydrostatic pressure 350 psig (24.2 bar)
- Maximum temperature 300°F (149°C)