Description
The Morrison Bros FIG 748A Pressure Vacuum Vent with Pressure Discharge Hood is designed for top-of-vent-pipe installation on aboveground or underground storage tanks. Poppets seal vapors inside the tank when pressure is equalized, and the vent opens to allow safe tank breathing during filling and dispensing. The pressure discharge hood allows pressure relief to be directed to a desired discharge point rather than venting freely.
Features
- Directs vapors outward and upward in compliance with NFPA 30
- Tri-polar design allows exhaust hood mounting in any of three positions
- Pressure discharge hood facilitates piping of pressure relief to a controlled discharge point
- Optional dryer connection accommodates desiccant dryer installation on the vacuum port
- Poppet-sealed design retains vapors when internal pressure is equalized
Options
- Dryer connection: Available to accommodate desiccant dryers on the vacuum connection
- Pressure discharge hood: Included — pipes pressure relief to a desired discharge point
Applications
- Aboveground and underground petroleum storage tanks
- Fuel storage and dispensing facilities
- Installations requiring directed pressure discharge or desiccant dryer integration
- Bulk liquid storage requiring NFPA 30-compliant venting
