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Enclosure Pressure Purging

Enclosure pressure purging is a critical process in ensuring the safety and functionality of electrical equipment, especially in hazardous environments. This method involves the use of purge and pressurization systems, which are designed to remove hazardous gas or flammable substances from the enclosure. By introducing an inert gas or clean air, these systems purge the potentially explosive atmospheres that could be present inside the enclosure.

The primary goal of this process is to maintain a positive internal enclosure pressure, which is achieved by continuously supplying protective gas, such as an inert gas, into the enclosure. This positive pressure prevents the ingress of hazardous gases or flammable gases from the surrounding environment. Purge and pressurization systems are especially important in explosion proof enclosures or in areas where there is a high risk of internal explosive gases.

These systems work by first initiating an initial purge, which clears any hazardous or flammable gas from the enclosure. Following the purge, the enclosure is pressurized to maintain a constant flow of protective gas. This pressurization helps to create a barrier against the entry of hazardous gases from the outside, thus protecting the internal equipment.

Products

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$50.70
Hoffman 101072124SP Inlet Ring for Motor Impeller 10.50x2.00x10.75
$65.52
Hoffman FLNGN38K4 Vertical mount (VM) or horizontal mount (HM)90 cubic feet maximum enclosure volumeSystem face plate and mounting plate: Type 316L stainless steelRegulator body: zinc with enamel finishManifold body: anodized aluminum with Type 316 stainless steel valvesEnclosure pressure gauge: aluminum with enamel finishGas supply gauge: poly case and nickel-plated tubeEnclosure protection vent—90 degreeRapid exchange control valveEnclosure supply and enclosure reference bulkhead fittings: Type 316 stainless steelFastener hardware
$7230.60
Hoffman ATEX3003YZVM Vertical mount (VM) or horizontal mount (HM)Available in 90 cubic feet maximum enclosure volume modelSystem face plate and mounting plate: Type 316 stainless steel tumble finishRegulator body: zinc with enamel finishManifold body: anodized aluminum with Type 316 stainless steel valvesEnclosure pressure gauge: aluminum with enamel finishGas supply gauge: poly case and nickel-plated tubeEnclosure protection vent (90 degree)Enclosure supply and enclosure reference bulkhead fittings: Type 316 stainless steelFastener hardware available in aluminum and stainless steelRapid-exchange control valveExplosion-proof differential pressure switch with “C” contacts for alarm
$7137.00
Hoffman ATEX3003YZHM Vertical mount (VM) or horizontal mount (HM)Available in 90 cubic feet maximum enclosure volume modelSystem face plate and mounting plate: Type 316 stainless steel tumble finishRegulator body: zinc with enamel finishManifold body: anodized aluminum with Type 316 stainless steel valvesEnclosure pressure gauge: aluminum with enamel finishGas supply gauge: poly case and nickel-plated tubeEnclosure protection vent (90 degree)Enclosure supply and enclosure reference bulkhead fittings: Type 316 stainless steelFastener hardware available in aluminum and stainless steelRapid-exchange control valveExplosion-proof differential pressure switch with “C” contacts for alarm
$332.80
Hoffman PCFSKIT Purge and Pressurization System Continuous Flow Service Kit Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.
$332.80
Hoffman PLCSKIT Purge and Pressurization System Leakage Compensation Service Ki Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.
$16456.70
Hoffman PLCS1X2 Purge and Pressurization System Leak Compensation Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.
$16456.70
Hoffman PLCS1X1 Purge and Pressurization System Leak Compensation Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.
$3244.80
Hoffman PCFB1YZ Purge and Pressurization Continuous Flow Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.
$3244.80
Hoffman PCFF1YZ Purge and Pressurization Continuous Flow Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.
$4655.30
Hoffman PLCB1YZ Purge and Pressurization System Leak Compensation Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.
$4655.30
Hoffman PLCF1YZ Purge and Pressurization System Leak Compensation Purge and Pressurization is a protection method used with Type 4, 4X and 12 (IP54 recommended minimum) enclosures. The enclosure is initially purged to remove any internal explosive gases or dust. Once this is accomplished, the enclosure is pressurized with a protective air or inert gas supply. This provides a positive internal enclosure pressure which keeps any external explosive gases or dust from entering the enclosure.