Franklin Fueling 804100901 Defender Series® Pressure/Vacuum Vent w/ 2” Vent Stack Adapter regulates the pressure at which vapor is allowed to escape from the underground storage tank and the vacuum at which outside air is allowed to enter the tank. It’s internal rolling diaphragm delivers consistent and controlled cracking for both low leak and high-pressure conditions while the superior construction of UV-resistant materials extends the overall service life. Install end-of-line with the Defender Series® vent stack adapter.

Features

• Pressure setting: 2.5” to 6.0” WC
• Vacuum setting: -6.0” to -10.0” WC
• Pressure leak rate: ≤ .05 CFH at +2” WC
• Vacuum leak rate: ≤ .21 CFH at -4” WC
• Maximum flow rate: 8,000 SCFH at 2 PSI
• Operating temperature: -22° to 122° F (-30° to 50° C)
• Material: UV-resistant polymer
• With typical Pressure/Vacuum (P/V) vents only lasting a single 3-year test cycle, Defender Series® P/V vents are built to outlast other vents in their class.
• With high-grade, UV-resistant materials and premium internal components, Defender Series® P/V vents provide precision regulation of storage tank pressure for the long-haul.