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463278 — VALVE,AIRLINE RESPIRATOR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

463278: VALVE,AIRLINE RESPIRATOR.

The VALVE,AIRLINE RESPIRATOR is a the manufacturer industrial component. Key specifications include criticality_code_justification: TEXT, general_characteristics_item_description: SOLE SOURCE REQUIRED BY STATUTE 6.302. This part is cataloged in the U.S.

Government catalog under NSN 4240-01-249-6687, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
463278
NSN: 4240-01-249-6687
FSC: 4240 — Safety and Rescue Equipment
CAGE: 55799 — MINE SAFETY APPLIANCES COMPANY (USA)
SPECIFICATIONS
criticality_code_justificationTEXT
general_characteristics_item_descriptionSOLE SOURCE REQUIRED BY STATUTE 6.302
NSN4240-01-249-6687
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE,AIRLINE RESPIRATOR TITLE COMPONENT PN 463278 MFR VALVE,AIRLINE RESPIRAT
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: SOLE SOURCE REQUIRED BY STATUTE 6.302
•
CRITICALITY CODE JUSTIFICATION: TEXT
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSOLE SOURCE REQUIRED BY STATUTE 6.302
CRITICALITY CODE JUSTIFICATIONTEXT
OTHER ITEMS IN FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515 4240-00-001-2684 4240-00-006-0022 4240-00-007-4576 4240-00-007-8182 4240-00-007-8183 4240-00-007-8184 4240-00-007-8185
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 463278?
463278 is a VALVE,AIRLINE RESPIRATOR.
What is the NSN for 463278?
463278 is cataloged in the U.S. Government catalog under NSN 4240-01-249-6687. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.