Taco® 400-4 Automatic Air Vent, 1/8 in Nominal, NPT Connection, 150 psi Working, 240 deg F, Brass

  • Connection Type: NPT
  • Country of Origin: US
  • Dimensions: 3-3/16 in H x 1-13/16 in W
  • Manufacturer Name: Taco
  • Material: Brass
  • Nominal Size: 1/8 in
  • Type: Automatic
  • Working Pressure: 150 psi
Taco Hy-Vents® as the industry standard for dependable, long-life service. The high-capacity, float-style vent can be placed either on the boiler or at the high points throughout the system. With threaded connections - 1/8 in, 1/4 in, 1/2 in and 3/4 in and operating pressure ratings up to 250 psi, these brass-body, nickel-plated vents meet the system requirements of even your largest installations. Vents are easily serviceable, if needed, by simply unscrewing the vent cap. Taco Hy-Vents® are available in a variety of styles including the Slim-Line Hy-Vent and High Pressure Hy-Vent.
  • Features and More


  • Straight body pattern
  • Male thread type
  • Straight mount


  • For Heating


  • 1 Year