Hoffman Specialty Radiator Steam Vents

Bell & Gossett : Steam Specialties : Vents

Model1A PartNo.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)

Model70A PartNo.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)

Model40 PartNo.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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