Protego VD/TS: VD/TS is a pressure relief valve, a highly developed combined pressure/vacuum relief valve used for high flow capacities with an integrated flame arrestor unit. It is primarily used for safety device for flame transmission proof in-out breathing in tanks, containers and process engineering apparatus. The valve offers reliable protection against excess pressure and vacuum, prevents inbreathing of air and product loses almost up to the set pressure and also protects against atmospheric deflagration. Advantages: - only 10% overpressure to full lift. - Extreme tightness and hence least possible product losses and reduced environmental pollution. - Guided housing to protect against harsh weather conditions. - Can be used as protection against atmospheric deflagration. - Maintenance free design.