Protectoseal Series 8540G Improved Performance, Aluminum, End-of-Line Pressure / Vacuum Breather Vent provides quicker pressure pallet lift, and improved flow performance at low overpressures just above the relief set point. This provides the benefit of higher flows at lower overpressures which can be beneficial in storage tank vapor control schemes requiring tight operating bands with the tank’s emergency relief vents, tank blanketing valves and other associated devices in their vapor control system.

• Certified flow curves validating flow characteristics of unit
• Certified test report verifying specified settings and leakage performance
• “Air-cushion” pallet design for low leakage performance of no more than 1 SCFH at 90% of the set pressure
• Pallet assembly guides and center pallet stem guide to ensure proper alignment of pallet assembly on the seat and smooth lifting and reseating action
• Automatic condensate drainage design to mitigate freezing, binding and clogging
• Swing-bolt design facilitating inspection and easy maintenance
• Serialized unit and associated weights for easy identification and traceability
Datasheet