Pressure Vacuum Vent 8540

The standard Pressure & Vacuum breather vent


The Protectoseal Series No. 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 vapours as the tank normally breathes in and out. Pallets open and close to permit only that intake or outlet relief necessary to remain within permissible working pressures and avoid damage to the tank. Reduces costly evaporation losses.
• Sizes 2″ (DN 50) through 12″ (DN 300)
• Settings achieved by weight loading
• Reduces costly evaporation losses
• Leakage rate of less than 1 SCFH of air at 90% of set point
• Patented, FEP Film “Air-Cushioned Seating”
• Low-leak pallet design – certified test reports
• Conforms to the latest ATEX Directive
• Factory tested / certified for leakage and correct settings
• Available in Aluminium, Ductile Iron, Stainless Steel, Carbon Steel, and Alloy C / C276