MSA 454780 Respirator Valve and Speaking Diaphragm Unit Body
Manufactured by Mine Safety Appliances Company (MSA)
Equivalent to Bosch Rexroth GMBH Lohmann P/N 454780
NSN references indicates this is a Respirator Valve Body.
This item bears patent no. 3572332, which is a COMBINATION VALVE AND SPEAKING DIAPHRAGM UNIT. This is a valve body for that respirator. The end item for the NSN referenced part (this item) are various U.S. Navy vessels and Divers Life Support System.
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