Hoffman 1B 401425 1/4" Connection Convector Steam Vent Air Valve (non-vacuum)

Features

• Float-type vent
  
• Adjustable port for true proportional venting - 6 port settings from slow (1) to fast (6)
• Telescopic siphon tube
• 1/4″ NPT straight shank
  
• Maximum operating pressure 1 1/2 psig (0.1 bar)*
  
• Maximum pressure 10 psig (0.7 bar)

*Drop away pressure (maximum pressure against which the vent can open).