Pressure Vacuum Vent with Flame Arrester 830

Breather vent with Flame Arrester


The Protectoseal Series No. 830, Pressure / Vacuum Conservation Vent with Flame Arrester, is designed to prevent costly evaporation losses, tank burst due to over-pressure, and collapse due to vacuum. The flame arrester protects tank against fire and explosion caused by exterior sources of ignition. Pallets in the vent housing minimise air and vapour loss as the tank “breathes”. They open and close just enough to maintain safe working pressures and avoid damage to the tank. The flame arrester is mounted externally and is only exposed to vapours when venting.
• Settings achieved by weight loading
• Sizes 2″ (DN 50) through 10″ (DN 250)
• Suitable for unconfined, Group D vapour deflagrations
• Reduces costly evaporation losses
• Single body construction with external flame arrester
• 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
• Factory tested / certified for leakage and correct settings
• Available in Aluminium, Ductile Iron and Stainless Steel