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Enclosure Drains

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Enclosure drains play a crucial role in maintaining the integrity and functionality of enclosures, especially in hazardous locations. These drains are designed to allow accumulated water, which can result from condensation or external factors, to exit the enclosure, thereby preventing damage to the devices and components housed inside. In hazardous locations, the presence of moisture can lead to serious safety concerns, such as the risk of electrical short circuits or corrosion, which can compromise the structural integrity of the enclosure.

One key aspect of enclosure drains is the air pressure equalizer, which helps in balancing the internal and external pressures. This is particularly important in environments where temperature fluctuations are common, as these can lead to temperature-induced vacuums. Such vacuums can potentially pull moisture or other harmful liquids into the enclosure. The air pressure equalizer works to reduce the harmful effects of these temperature-induced vacuums, ensuring a more stable internal environment.

Schneider Electric NSYVEA9 - Water Drain Plug

$3.78 $4.80

Schneider Electric NSYVEA9 Water drain plug, for drainage of condensation water. Drilling diam: 8.5 mm.IP53

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Rittal 2459000 Condensate discharge

$41.22 $61.61

Rittal 2459000 Wall-mounted Industrial Enclosure, Condensate outlet for reliable condensate discharge from the inside and protection against splashed water from the outside (labyrinth effect).

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Hoffman EXDBDM25SS6 Hazardous Locations Breather Drain

$288.56 $399.00

Hoffman EXDBDM25SS6 Hazardous Locations Breather Drain Hazardous Location Breather Drains prevent moisture build-up within hazardous approved enclosures while maintaining enclosure UL Type rating. Drains are to be used when an enclosure is subject to fluctuations in temperature which can lead to the formation of condensation and a subsequent moisture build-up. These drains allow air within an enclosure to breathe with the surrounding atmosphere, preventing condensation and any potential damage to electrical equipment.

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Hoffman EXDBDM20SS6 Hazardous Locations Breather Drain

$196.43 $271.60

Hoffman EXDBDM20SS6 Hazardous Locations Breather Drain Hazardous Location Breather Drains prevent moisture build-up within hazardous approved enclosures while maintaining enclosure UL Type rating. Drains are to be used when an enclosure is subject to fluctuations in temperature which can lead to the formation of condensation and a subsequent moisture build-up. These drains allow air within an enclosure to breathe with the surrounding atmosphere, preventing condensation and any potential damage to electrical equipment.

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Hoffman EXEBDM25SS6 Hazardous Locations Breather Drain

$123.53 $170.80

Hoffman EXEBDM25SS6 Hazardous Locations Breather Drain Hazardous Location Breather Drains prevent moisture build-up within hazardous approved enclosures while maintaining enclosure UL Type rating. Drains are to be used when an enclosure is subject to fluctuations in temperature which can lead to the formation of condensation and a subsequent moisture build-up. These drains allow air within an enclosure to breathe with the surrounding atmosphere, preventing condensation and any potential damage to electrical equipment.

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Hoffman EXEBDM20SS6 Hazardous Locations Breather Drain

$91.13 $126.00

Hoffman EXEBDM20SS6 Hazardous Locations Breather Drain Hazardous Location Breather Drains prevent moisture build-up within hazardous approved enclosures while maintaining enclosure UL Type rating. Drains are to be used when an enclosure is subject to fluctuations in temperature which can lead to the formation of condensation and a subsequent moisture build-up. These drains allow air within an enclosure to breathe with the surrounding atmosphere, preventing condensation and any potential damage to electrical equipment.

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Hoffman AVDR4SS4 Stainless Steel Vent Drain

$155.34 $197.60

Hoffman AVDR4SS4 Stainless Steel Vent Drain Hoffman AVDR4SS4 Stainless Steel Vent Drain

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Hoffman AVDR4NM Non-Metallic Vent Drain

$76.34 $97.11

Hoffman AVDR4NM Non-Metallic Vent Drain Hoffman AVDR4NM Non-Metallic Vent Drain

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More Information about Enclosure Drains

The materials used in the construction of enclosure drains are also significant. Stainless steel vent drains, for example, offer durability and resistance to corrosion, making them ideal for harsh environments. In contrast, non-metallic vent drains, such as those made from polyester, may be used in less demanding situations. The choice between these materials often depends on the specific requirements of the enclosure, including its UL type rating, which indicates the level of protection provided against various environmental factors.

The design of the enclosure drain is tailored to its specific application. For hazardous location enclosures, the design ensures that any drainage does not compromise the enclosure's ability to prevent the ingress of hazardous materials. This is where the enclosure's UL type rating becomes crucial, as it must align with the specific safety requirements of the hazardous location.

Enclosure drains, whether made of stainless steel or non-metallic materials, function as an air pressure equalizer, reducing the harmful effects of temperature-induced vacuums and enabling accumulated water to drain effectively. Their importance is particularly pronounced in hazardous locations, where they help to maintain the safety and functionality of the enclosures.

Purge System Basics

3 common reasons to use purge systems

They allow electrical enclosures to be installed in hazardous areas without the need for explosion proof enclosures.

They recycle the air inside of an enclosure, reducing the internal temperature.

They help reduce the effects of corrosion on components housed within the enclosure.

How does a purge system work?

Purge systems use incoming air from a supply line, solenoid valves, pressure gauges and pumps, to constantly maintain a positive pressure inside an enclosure. This prevents any flammable gases from entering the enclosure potentially causing an ignition event to occur. By maintaining a positive pressure within the enclosure, moisture and corrosive gases are also prevented from entering the enclosure and damaging components. Most purge systems will ensure that the air inside the enclosure is recycled a certain amount of times within a given time period. This air recycle function assists in maintaining a cooler temperature within the enclosure.

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