Pressure Vacuum Vents

748A & 748ALT Pressure Vacuum Vents

Pressure vacuum vent designed for installation on top of the vent pipe of an aboveground or underground storage tank.

Poppets seal vapors in the tank when pressure is equalized.

The vent allows the tank to "breathe" during filling and dispersing operations. This vent must be used in conjunction with an emergency vent. It is recommended that the opening pressure setting is set below that of the emergency vent so the normal vent operates first. Settings are approximate.

  • Vents outward and upward in compliance with NFPA 30 
  • Tri-polar mounting screws for mounting exhaust hood in any of three positions
  • Optional dryer connections accomodate the installation of desiccant dryers on vacuum connection
  • Optional pressure discharge hood facilitates piping pressure relief to desired discharge point

Contact Us

Shipman King Pty Ltd
109 McEwan Road West Heidelberg Victoria Australia 3081
+61 3 9459 9900
+61 3 9459 9944