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Pressure Compensation Plug BDN Series from Hammond Manufacturing

March 3, 2026

Pressure Compensation Plug BDN Series from Hammond Manufacturing

Pressure Compensation Plug BDN Series from Hammond Manufacturing

The BDN series pressure compensation plug from Hammond Manufacturing provides controlled pressure compensation caused by temperature variations, such as night and day operations. When mounted to bottom of enclosure, this unique design provides a method of effectively draining moisture from within the enclosure.

  • Packaged individually.
  • Provides for controlled pressure compensation due to temperature variations (i.e. night/day operation).
  • When mounted to bottom of enclosure, this unique design provides a method of effectively draining moisture from within the enclosure
  • Recommend two plugs per cabinet in opposite locations.
  • Pipe Thread M20 x 1.5 (minimum cutout 20.2 mm / 0.80 inches)
  • Recommended Torque 10 NM

Note: Due to circumstances beyond Hammond Manufacturing’s control, the non-metallic breather drain, part #BDN4XN1, is temporarily unavailable and no new supply expected in the near term. Please see below for alternative suggestions.

Part Details

Click Part No, below, for details (e.g., Product drawings, assembly instructions, ship weight)
Part numbers with stars are new sizes or packaging configurations.

Units shown: mm.

Part No.BLA
BDN4XN1201728
BDN4XS16151230


BDN4XN1		BDN4XS16
CSA/A Ex Approvals:Class I, Zone 1, Ex e IIClass I, Zone 1, Ex e II
Class I Division 2 Groups ABCDClass I Division 2 Groups ABCD
Class II EFG, Class IIIClass II EFG, Class III
Ingress Protection:IP66, CSA Enclosure Type NEMA 4XIP66, CSA Enclosure Type NEMA 4X
Impact Resistance:20Nm (7Nm GF Nylon)N/A
Materials:Durethan BKV 30 N1 30% Glass Filled Nylon316L Stainless Steel
O Ring – NitrileO Ring – Nitrile
Fixing nut – BrassFixing nut – 316L SS
Operating Temp:-50C to +85C-30C to +100C

Source

More Information

Hammond Manufacturing

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