Description Eliminates the need for pipe nipple on installation. Hole patterns conforms to ANSI B16.5 specifications. Machined base and top with Buna N “O” Ring provides vapor tight seal. Air flow at 2.5 psi is 324,426 SCFH for the 8” and 483,340 SCFH for the 10”, both with screens. Recommended Accessories: AST Overfill Prevention Valve AST Spill Containment Box PEI Free Flow Vents AST Audible Alarm
