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MSA™ Air-Line Respirator / Air-Supplied Hood Accessory, Quick-disconnect Male Plug with Male NPT

For consistent reliability when connecting an inlet pressure gauge, choose an MSA brass or aluminum Quick-disconnect for your system.

Manufacturer:  MSA™ 473501

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Catalog No. 18-139-737

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Male 1/4 in. NPT

Fittings with the same letter code are interchangeable.

  • AL: Aluminum
  • S: Steel
  • SST: Stainless Steel
  • BR: Brass



Connection of inlet pressure gauge
Male 1/4 in. NPT
Airline respirator and air-supplied hood
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