Hoffman 45 401461 1/2" Female X 3/4" Male Connection Convector Steam Vent Air Valve (non-vacuum)

Features

• Single non-adjustable port 
• For small steam systems
• Telescopic siphon tube with angle cut assures drainage
• 1/2″ NPT female and 3/4" NPT male straight shank
  
• Maximum operating pressure 6 psig (0.4 bar)*
  
• Maximum pressure 10 psig (0.7 bar)

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