Pressure Vacuum Vent Model 548

The Model 548 pressure/vacuum vent with gauge hatch is designed for “normal” venting of Aboveground Storage Tanks. It allows tanks to “breathe” during filling and withdrawing operations.
Pressure/Vacuum poppets seal vapors in the tank when pressure is equalized. This vent must be used in conjunction with an emergency vent and it is recommended.

Pressure/Vacuum Vent Setting Range

• Model numbers: Model 548
• Sizes Available: 2” and 3”
• Connections: FNPT or NTP
• Pressure: 8.6 to 79.0 mbar
• Vacuum: 4.3 mbar

Materials of Construction

• Poppet/Seat Material: Brass, Viton Foam on Brass
• Body/Hood Material: Brass, Aluminum