Hoffman Radiator Steam Vents
Information:
Model 1A Part No. 401422 Air Valve (non-vacuum)
- Float-type vent
- Adjustable port for true proportional venting – 6 port settings from slow (1) to fast (6)
- 1⁄8″ NPT angle connection
- Maximum operating pressure 11⁄2 psig (0.1 bar)*
- Maximum pressure 10 psig (0.7 bar)
Model 70A Part No. 401443 Air Valve (non-vacuum)
- Float-type vent
- Single non-adjustable port
- Meets Federal Specification WW-V-151 for Type 1 Non-Adjustable Valves
- 1⁄8″ NPT angle connection
- Maximum operating pressure 11 psig (0.8 bar)*
- Maximum pressure 15 psig (1.0 bar)
Model 40 Part No. 401440 Air Valve (non-vacuum)
- Float-type vent
- For ordinary one-pipe system that doesn’t require proportional venting
- Single non-adjustable port
- 1⁄8″ NPT angle connection
- Maximum operating pressure 6 psig (0.4 bar)*
- Maximum pressure 10 psig (0.7 bar)
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