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KDB Series - Aluminum Drain/Breather - Thread Size 1/4 Inch NPT

By Killark 

Catalog ID: KDB-250

By Killark
Catalog ID:  KDB-250
The KB & KDB drain and breather are installed either the bottom top of an enclosure. When installed in the bottom they act as a gravity fed drain to expel moisture from condensation that can build up in electrical enclosures When installed in the top of an enclosure it acts a s a breather allowing air to enter and prevent a vacuum which can cause the drain not to flow properly. They are UL / cCSAus / FM certified for Class I Class I Zone 1 & 2 Class III, Type 4 & 4X. Also, ATEX, IEC Ex, Ex db IP66 with suffix “CEN”. Review each part for hazardous rating suitability and notified body. The KB & KDB are offered in aluminum, 300 series stainless steel and 316 stainless steel. Thread sizes ¼”to 1/2” NPT and Metric sizes M16 & M20.

The drain and breather has a 1/4" NPT thread size.

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Application When installed in the top of an enclosure, these fittings act as breathers which allows air flow through the enclosure. Bottom installations permit water from condensation to drain from the enclosure continuously.
Color Gray
EU RoHS Indicator Contact Manufacturer
Material Aluminum, Copper Free (less than 4/10 of 1%)
Series KDB
Type Drain & Breather
UPC 783936012629


Dimensions 2 in x 1 in x 1 in
Gross Weight with Packaging 0.17
Height 1 in
Hub Size 1/4"
Length 2 in
Width 1 in

Certifications and Compliance

ATEX File Number 10ATEX1351U
CSA File Number LR11716
Hazardous Rating(s)
  • Class I, Divisions 1 & 2, Groups B, C, D
  • Class I, Zones 1 & 2, Groups IIB+H2, IIA
  • Class II, Divisions 1 & 2, Groups E, F, G
  • Class III, Divisions 1 & 2
IECEx File Number 10.0007U
Nema Rating 3, 4, 4X
UL File Number E10514


Carton Quantity 10