PRESSURIZATION TYPE (Ex ‘p’ ) TYPES
Dynamic Pressurization (DP) or pressurization by continuos circulation of protective gas (purging)
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- DP is a method of maintaining pressure in an enclosure in which after purging the protective gas is passed continously through the enclosure at a pressure above that of the specified minimum and discharged to the outside atmosphere
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- Static Pressurization or pressurization with leakage compensation
- Air supplied & pressurized continously from a non-hazardous area to avoid ingress of flammable gases / vapour inside the enclosure