VD-SV-EB

The Deflagration-Proof and Endurance-Burning-Proof VD-SV-EB Type PROTEGO® valve is a highly developed combined pressure/vacuum relief valve for high flow capacities with the integrated Flame Arrester PROTEGO® EB. It is primarily used as a device for flame transmission-proof in-breathing and out-breathing in tanks, containers, and process equipment. The valve offers reliable protection against over pressure and vacuum, prevents out-breathing of product vapor and in-breathing of air almost up to the set pressure, and protects against atmospheric deflagration and endurance burning if stabilized burning occurs.

After years of development, this typical opening characteristic of a safety relief valve is now also available for the low pressure range. The tank pressure is maintained up to the set pressure with a tightness that is above the normal standards due to our state-of-the-art manufacturing technology. This feature is ensured by valve seats made of high quality stainless steel and with individually lapped valve pallets (1), or with an air cushion seal (2), in conjunction with a high quality FEP diaphragm. 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 in corrosive fluids. After the overpressure is released, the valve re-seats and provides a tight seal.

The valve can be used at an operating temperature of up to +60°C / 140°F and meets the requirements of European Tank Design Standard EN 14015 (Appendix L) and ISO 28300 (API 2000). EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.