Newberry 3" Vacuum Vent (For gas) (10,000 Gallon or more) (SKU: VV3748P)

Description

This 3 in pressure-vacuum vent mounts on top of an above-ground tank's vent pipe and allows the tank to breathe during filling and dispensing while sealing vapors in when pressure equalizes. It discharges outward and upward in compliance with NFPA 30, and tri-polar mounting screws let the exhaust hood be positioned in three orientations after installation. Its opening pressure should be set below the emergency vent's setting so the P/V vent relieves first. Newberry supplies this vent as the Morrison Bros. FIG 748A.

Key Features

• Vapor sealing: Brass poppets seal the tank when pressure equalizes, conserving gasoline vapor.
• NFPA 30 discharge: Vents outward and upward in compliance with NFPA 30.
• Tri-polar mounting: Tri-polar mounting screws allow three-position installation of the exhaust hood.
• Dryer ready: Optional dryer connections accept a desiccant dryer.
• Discharge hood option: An optional pressure discharge hood allows relief to be piped away.
• Selectable settings: Pressure settings from 2 to 16 oz per sq in are available by part number.

Specifications

• Size: 3 in NPT
• Vent type: Pressure-vacuum (P/V)
• Body and hood material: Aluminum
• Poppets: Brass
• Seats: Passivated aluminum
• Screens: Stainless steel
• Pressure settings available: 2, 4, 6, 8, 12, 16 oz per sq in
• Vacuum setting: Typically 1 oz per sq in
• Venting capacity: 40,000 - 43,000 SCFH at 2.5 PSI depending on setting
• Part number range: 3100 AV through 3600 AV (standard); 4100 - 4600 AV with dryer connection
• Standards: UL 142, NFPA 30 and 30A, API 650
• Sizing note: Opening pressure should be set below the emergency vent's setting
• Recommended for: Gasoline - tanks 10,000 gallons and larger
• Component manufacturer: Morrison Bros. Co.
• Component model: FIG 748A
• Supplied by: Newberry Tanks
• Ships From: AR

Applications

• Normal venting on UL-142 shop-fabricated above-ground gasoline storage tanks
• Installations where the pressure relief must be piped away using the optional discharge hood
• Tanks needing a desiccant dryer on the vent to keep moisture out of the product

Manufacturer Documents

• Morrison FIG 748A Specification Sheet

Shipping and Warranty

• Manufacture Lead Time: 3-5 Weeks
• Ships From (State): AR

Products are subject to freight or parcel shipping costs. Shipping charges are calculated at checkout based on delivery location, product size, weight, and carrier requirements.

Warranty Information
Warranty coverage on tank accessories is provided by the component manufacturer and varies by product. Newberry's one-year limited warranty is written to cover the tank itself. For warranty details or to start a claim, contact Tank Supply Direct at info@tanksupplydirect.com.