Features

• Pressure/Vacuum Setting – 2.5" to 6" water column pressure settings and -6" to -10" water column vacuum settings are factory preset and tested.
• Reliable Service – Cycle tested to the equivalent of 80 years of service in the most severe environment without leakage problems.  
• Corrosion-Resistant Construction – A Duratuff^® composite body assures a long service life.
• Easy Installation – The 623V is available in 2" and 3" threaded versions.
• Complies with NFPA 30 Requirements – for venting gasoline vapors upward.
• Manifold Vent Pipes – Vent pipes may be manifolded to produce a single Pressure Vacuum Vent line. The 623V exceeds California's requirements of a maximum vapor leak rate of 0.17 SCFH at 2.00 inches H2O.
• High Maximum Flow Rate – 6450 SCFH at 2 psi (0.1 bar) pressure drop.
• Leak Rate – Multiple pressure vacuum vents may be installed on a single site. The 623V exceeds California standards with a leak rate of 0.05 SCFH or less at 2.00 inches H2O.
• Maintenance – No tools required. A removable snap fit top allows for easy maintenance (recommended yearly).
• 100-Mesh Stainless Steel Wire Screens – Helps prevent debris and insects from entering the tank vent lines. An added screen installed at the base prevents debris from intruding from the vent stack.
• Adaptor Bushing – Removable Hex threaded bushing designed for easy installation on NPT threaded risers. Allows easy access to lower screen.
• ATEX Approved – For flame arrestor applications.

Materials

• Top/Body: polypropylene
• Base: anodized aluminum
• Poppet: anodized aluminum
• Screen: stainless steel mesh
• Gasket: closed cell foam

Patent No. WO2004/036096AZ

Ordering Specifications

Conversion Table

Replacement Parts