BS&B FlameSaf from BS&B and HMA INSTRUMENTATION offers a comprehensive range of Pressure Relief Vents (PRVs), Vacuum Relief Vents (VRVs), and Pressure Vacuum Relieve Vents (PVRVs), with or without integrated flame arrester elements.

Pressure vacuum vents are designed to protect tanks from potentially damaging overpressure or vacuum levels that occur during filling, emptying, and fluctuations in ambient temperature. PRVs, VRVs and PVRVs also assist to minimise vapour loss through evaporation of the product, and retain inerting gases where applicable.

BS&B FlameSaf vents use weight-loaded valve discs that achieve full lift once pressure exceeds 10% over the set pressure, offering maximum flow rate and the lowest product loss.