0540-00 — VALVE,BREATHING APPARATUS

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

0540-00: VALVE,BREATHING APPARATUS.

The VALVE,BREATHING APPARATUS is a the manufacturer industrial component. Key specifications include body_width: 1.020 INCHES NOMINAL IN, body_height: 0.640 INCHES NOMINAL IN, body_length: 2.270 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, overall_height: 0.970 INCHES NOMINAL IN, special_features: UNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B. This part is cataloged in the U.S.

Government catalog under NSN 4220-01-039-1873, 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

MRO→ MRO_GENERAL→ 0540-00

NSN: 4220-01-039-1873
NIINs: 010391873, 010491326
FSC: 4220 — Marine Lifesaving and Diving Equipment
CAGE: 94120 — AQUALUNG USA, INC (USA)

SPECIFICATIONS

body_width	1.020 INCHES NOMINAL IN
body_height	0.640 INCHES NOMINAL IN
body_length	2.270 INCHES NOMINAL IN
inclosure_type	HERMETICALLY SEALED
overall_height	0.970 INCHES NOMINAL IN
special_features	UNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B
style_designator	RECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
end_item_identification	DIVER'S MASK USN MARK 1 MODEL 0; STURGEON CLASS SSN (637); SAFEGUARD CLASS ARS; DIVERS LIFE SUPPORT SYSTEM; DEEP SUBMERGENCE SYSTEMS PROGRAMS (DSSP); DRY DECK SHELTER
load_impedance_per_function	75.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
criticality_code_justification	FEAT
reference_frequency_per_function	6.0 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
frequency_band_width_per_function	5.82 MEGAHERTZ BLANK AND 6.18 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
NSN	4220-01-039-1873

COMPONENT DIAGRAM

KEY FEATURES

•

CRITICALITY CODE JUSTIFICATION: FEAT

TECHNICAL CHARACTERISTICS

CRITICALITY CODE JUSTIFICATION	FEAT
SPECIAL FEATURES	UNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B
END ITEM IDENTIFICATION	DIVER'S MASK USN MARK 1 MODEL 0; STURGEON CLASS SSN (637); SAFEGUARD CLASS ARS; DIVERS LIFE SUPPORT SYSTEM; DEEP SUBMERGENCE SYSTEMS PROGRAMS (DSSP); DRY DECK SHELTER

SUBSTITUTES & CROSS-REFERENCES 8

5486648-IT-F-57Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

4592474 ITEM 2Reference document

Same NSN cross-reference

Reference document — Secondary reference

4666843-2Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

4666843Reference document

Same NSN cross-reference

Reference document — Secondary reference

4693381 ITEM 2Reference document

Same NSN cross-reference

Reference document — Secondary reference

4693383 ITEM 74Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 0540-00?

0540-00 is a VALVE,BREATHING APPARATUS. It is classified as a MRO (MRO_GENERAL).

What parts can replace 0540-00?

There are 8 known substitutes for 0540-00: 5486648-IT-F-57, 4592474 ITEM 2, 4666843-2 and 5 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 0540-00?

0540-00 is cataloged in the U.S. Government catalog under NSN 4220-01-039-1873. This indicates validated use in U.S. government and defense supply chains.

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0540-00 — VALVE,BREATHING APPARATUS

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