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FIG 749S

Pressure Vacuum Vent for Underground and Low Volume Tanks - Slip-On Style

Pressure vacuum vents are installed on the top of underground and low volume aboveground storage tank vent pipes. Vent allows tank to “breathe” during filling and discharging operations. Pressure and vacuum poppets seal vapors in tank when pressure is equalized. Settings are approximate.

WARNING: This vent must only be used in conjunction with motor fueling and/or low capacity flow. Fluid handling in lines larger than that used for retail service stations can cause tank to rupture or implode.

Product Features

Construction Details

  • Body: Aluminum
  • Pressure Poppet: Aluminum
  • Pipe Seal: Buna-N
  • Screen: Stainless steel

Product Ordering Instructions

Fig Suffix Size Description Weight
749S 0100 AV 2” 8oz/sq.in. Pressure Vacuum Vent - Slip-on Style 1
749S 0200 AV 2"12oz/sq.in. Pressure Vacuum Vent - Slip-on Style 1
749S 1100 AV 3” 8oz/sq.in. Pressure Vacuum Vent - Slip-on Style (2"w/3” Reducer Installed) 1.55
749S 1200 AV 3” 12oz/sq.in. Pressure Vacuum Vent - Slip-on Style (2"w/3” Reducer Installed) 1.55