Protectoseal Series 8540H, End-of-Line Pressure / Vacuum Conservation Vent is intended for use where both pressure and vacuum relief are required. The pallets in the vent housing allow intake of air and escape of vapors as the tank normally breathes in and out. Pallets open and close to permit only the intake or outlet relief necessary to remain within permissible working pressures and avoid damage to the tank while also reducing the cost of evaporation losses.

• 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