Morrison Brothers 748A-0200 2″ Pressure Vacuum Vent

The Morrison Brothers 748A-0200 pressure vacuum vent is engineered for safe tank venting operations. It installs directly on vent pipes of aboveground or underground storage tanks. Additionally, it helps maintain proper internal tank pressure during filling and dispensing. The vent uses precision brass poppets to seal vapors when pressure equalizes. As a result, it reduces emissions and protects stored fuel integrity. Furthermore, it allows the tank to breathe efficiently under normal operating conditions.

This Morrison Brothers 748A-0200 pressure vacuum vent is designed for compliance with industry standards. It vents outward and upward to meet NFPA 30 requirements. Therefore, it is suitable for regulated fuel storage environments. For proper operation, this vent must be paired with an emergency vent. Moreover, the pressure setting should remain below the emergency vent threshold. This ensures the normal vent activates first during pressure changes.

Routine inspection is essential for optimal performance. Dust, debris, or ice buildup can restrict airflow and impact vent operation. Consequently, regular maintenance helps prevent pressure buildup, tank damage, or hazardous conditions.

Features & Specifications

• Designed for aboveground and underground storage tank venting
• 2-inch FNPT connection for standard installations
• Pressure setting: 4 oz./sq. in.
• Vacuum setting: 1 oz./sq. in.
• Venting capacity: 20,200 SCFH @ 2.5 PSI
• Brass poppets provide reliable vapor sealing
• Passivated aluminum seat for corrosion resistance
• Durable aluminum body and hood construction
• Stainless steel screens for debris protection
• Tri-polar mounting screws for flexible hood positioning
• Complies with NFPA 30 venting requirements
• Height: 10.37 inches
• Width: 9.68 inches
• Weight: 7.15 lbs.
• Manufacturer Part Number: 748A-0200