DE/S-MK VI - IIB3

The Deflagration-Proof and Endurance-Burning-Proof PROTEGO® DE/S -MK VI type device Appareil 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. is a state of the art high velocity vent valve working on the principle of a dynamic Flame Arrester. It is primarily used as a device for flame transmission proof venting of cargo spaces and loading systems of tankships during the loading process and on the journey. The valve offers reliable protection against excess pressure, prevents product losses almost up to the set pressure Pression de réponse Set pressure is the gauge pressure at the device inlet at which the relief device is set to start opening under service conditions. and provides protection against atmospheric deflagrations as well as endurance burning Endurance burning Stabilized burning for an unlimited time. if stabilized burning occurs. The PROTEGO® DE/S-MK VI high velocity vent valve is available for substances of Explosion Explosion Réaction brusque d’oxydation ou de décomposition entraînant une élévation de température, de pression ou des deux simultanément. groups IIB3 and IIC (NEC group C MESG ≥ 0,65 mm and B MESG < 0,50 mm).

The tank pressure Pression de la cuve Tank pressure is the pressure within a tank. is maintained up to the set pressure with a tightness that is far superior to the conventional standard due to our state of the art manufacturing technology. This feature is ensured by valve seats made of high-quality stainless steel with an individually lapped valve cone. After the excess pressure is discharged, the valve reseats and provides a tight seal Joint 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. . The design of the valve cone and valve seat Siège de soupape The valve seat is a component on which the valve pallet rests when the valve is closed. produces a vertical, free jet that transports the gases far away from the discharge opening. This keeps the deck free of gas. The shape of the valve cone and valve seat promotes the drainage of rainwater when closed. A function check of the valve is easily performed with a manual lift gear (4) which Returns to its initial position after actuation. A lateral flange connection, DN2, is standard for a vacuum Dépression Vacuum is the pressure in an enclosed space that is lower than the ambient pressure. valve (such as the PROTEGO® SV/E-S see volume 7).

The PROTEGO® DE/S-MK VI high velocity pressure relief valve Soupape de surpression Valve designed to open and relieve excess pressure and to reclose and prevent the further flow of fluid after normal conditions have been restored. is also approved for oscillating flow. If a very long pipe is installed between the cargo space and valve, chattering can occur due to the resistance in the pipe or resonance phenomena. This can especially occur during partial load operation. This so called „hammering“ does not occur when a sufficient flow passes through the valve and the flow in the upstream line does not stop. The design is therefore a function of the required flow capacity. Accordingly, there are two different designs: one with a lift of 10 mm and one with 50 mm.