V/SV-AD-IIB3

The deflagration Deflagration Explosion propagating at subsonic velocity (EN 1127-1:1997). proof V/SV-AD type PROTEGO® valve is a highly developed vacuum relief valve Vacuum relief valve A vacuum relief valve is used to ventilate a part of the system and protects it from impermissible underpressure. for high flow capacities with an integrated flame arrester unit Flame arrester unit Flame arrester casing with FLAMEFILTER® set. . It is primarily used as a safety device Device A device is a pipe component that influences the media flow by opening, closing, or partially shutting off the flow channel or by dividing or mixing the media flow. for flame-transmission-proof in-breathing in tanks, containers, and process equipment Equipment Machines, appliances, fixed or mobile devices, control parts and accessories, and warning and prevention systems, whether separate or combined, intended for the generation, transfer, storage, measurement, control, and conversion of energy, and for the processing of materials, which have their own potential source of ignition and may cause an explosion. . The valve offers reliable protection against vacuum Vacuum Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. and prevents in-breathing of air almost up to the set pressure; while at the same time protecting against atmospheric deflagration. The PROTEGO® flame arrester unit PROTEGO® flame arrester unit The PROTEGO® flame arrester unit is the main component of a flame arrester. It prevents flame propagation. is designed to achieve minimum pressure drop with maximum safety. The deflagration-proof PROTEGO V/SV-AD valve is available for substances for explosion Explosion Abrupt oxidation or decomposition reaction producing an increase in temperature, pressure, or in both simultaneously. group IIB3 (C MESG ≥ 0.65 mm).

The tank pressure Tank pressure Tank pressure is the pressure within a tank. is maintained up to the set vacuum with a tightness that is above to the normal standards due to our state-of-the-art manufacturing technology. This feature is ensured by the valve seats made of high quality stainless steel and with individually lapped valve pallets (1), or with an air cushion seal Seal A seal prevents or limits unwanted transfer of product from one container to another. Seal is used as superordinate term for all types of sealing elements. (2), in conjunction with high quality FEP diaphragm Diaphragm A diaphragm is a thin layer of material, which has a large surface area. . The valve pallets are also available with a PTFE seal to prevent them from sticking when sticky substances are used and to enable the use of corrosive fluids. After the vacuum is balanced, the valve re-seats and provides a tight seal. If the valve is used in atmospheres forming an explosive mixture with air and the mixture ignites, the integrated PROTEGO® flame arrester unit (3) prevents flame transmission into the tank.