The 948A pressure vacuum vent is designed for installation on top of the vent pipe of an aboveground or underground storage tank. The poppets seal vapors in the tank when pressure is equalized. The vent allows the tank to “breathe” during filling and discharging operations.
Features
- Conserves vapors
- Durable construction
- Easily replaceable seals extend life expectancy
- Outlasts other brands by many years of service
- Operating temperature -40° F to 130° F
- Full 2-inch orifice for maximum flow rate
- Compatible with gasoline, ethanol (to E-85), biodiesel (to B-20)
Construction Details
- Body: Anodized aluminum
- Seals: Viton®
- Screens: Stainless steel
- Handle: Stainless steel
- Rainguard: Aluminum
Leak Rates & Settings
- Pressure leak rate: Less than 0.50 CFH @ 2.00" WC
- Vacuum leak rate: Less than 0.21 CFH @ 4.00" WC
- Opening pressure: 2.5" to 6.0" WC
Estimated Flow Rates
- 27,000 CFH @ 2.5 PSI
- 25,000 CFH @ 2.0 PSI
- 15,500 CFH @ 1.0 PSI
