Bell & Gossett Radiator Steam Vents

Features and Benefits:

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)