Explosion protection can be acheived in 4 main concepts depending on type of facility, system and type of hazardous area.
Explosion protection can be acheived in 4 main concepts depending on type of facility, system and type of hazardous area.
Traditional electronic explosion protection – supply to the electrical equipment is provided through a safety barrier that limits the current and voltage so that the minimum ignition energy and ignition temperature of an explosive mixture are not reached.
Increased safety explosion protection requires mechanical support in the form of enclosures and mechanical protection for clamps, screens and electrical components. The occurence of sparks and impermissible temperatures that could act as a source of ignition is prevented through additional mechanical protective measures.
Equipment is protected by installation in a flameproof enclosure to ensure that potential sparks cannot escape into surrounding potential explosive atmospheres – components that could trigger ignition are built into an enclosure that is specified to withstand explosion pressures. The openings of the explosion-proof enclosure are constructed to prevent the explosion from escaping the enclosure.
Equipment is installed in an enclosure that is retained under slight overpressure with notrogen or a nonexplosive gas to prevent penetration by flammable gases. The equipment enclosure is filled with an inert gas and an explosive gas mixture cannot make contact with potential ignition cources on the inside of the enclosure.
| Category | Process Instrumentation |
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ASCO Solenoid Valves (SIL3 NACE ATEX NAMUR Valves)ASCO 551-553 explosion proof solenoid valves are single/dual NAMUR style solenoid valves, which are pilot operated, have an stainless steel body and are 1/4 and 1/2 tapped.
ASCO Solenoid Valves (SIL3 NACE ATEX NAMUR Valves)ASCO 302 series are direct operated and pad mounted explosion proof solenoid valves which are ATEX certified for installation in potentially explosive atmospheres located in hazardous areas.
ASCO Solenoid Valves (SIL3 NACE ATEX NAMUR Valves)ASCO 551-553 explosion proof solenoid valves are single/dual solenoid valves, which are pilot operated, have an stainless steel body and are 1/4 and 1/2 tapped.
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