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9903K37 — BREAKER,VACUUM,FLUSH VALVE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

9903K37: BREAKER,VACUUM,FLUSH VALVE.

The BREAKER,VACUUM,FLUSH VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, special_features: MAXIMUM TEMPERATURE 180F AT 125 PSI, inlet_connection_type: THREADED INTERNAL PIPE, nominal_overall_length: 3.375 INCHES IN, outlet_connection_size: 3/4, outlet_connection_type: THREADED INTERNAL PIPE. This part is cataloged in the U.S.

Government catalog under NSN 4510-01-482-7933, 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
9903K37
NSN: 4510-01-482-7933
FSC: 4510 — Plumbing Fixtures and Accessories
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY
special_featuresMAXIMUM TEMPERATURE 180F AT 125 PSI
inlet_connection_typeTHREADED INTERNAL PIPE
nominal_overall_length3.375 INCHES IN
outlet_connection_size3/4
outlet_connection_typeTHREADED INTERNAL PIPE
end_item_identificationMISCELLANEOUS
NSN4510-01-482-7933
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BREAKER,VACUUM,FLUSH VALVE TITLE COMPONENT PN 9903K37 MFR BREAKER,VACUUM,FLUSH V
KEY FEATURES
•
OUTLET CONNECTION SIZE: 3/4
•
NOMINAL OVERALL LENGTH: 3.375 INCHES IN
•
INLET CONNECTION TYPE: THREADED INTERNAL PIPE
•
MATERIAL: COPPER ALLOY
•
OUTLET CONNECTION TYPE: THREADED INTERNAL PIPE
TECHNICAL CHARACTERISTICS
OUTLET CONNECTION SIZE3/4
NOMINAL OVERALL LENGTH3.375 INCHES IN
INLET CONNECTION TYPETHREADED INTERNAL PIPE
SPECIAL FEATURESMAXIMUM TEMPERATURE 180F AT 125 PSI
END ITEM IDENTIFICATIONMISCELLANEOUS
MATERIALCOPPER ALLOY
OUTLET CONNECTION TYPETHREADED INTERNAL PIPE
OTHER ITEMS IN FSC 4510 — Plumbing Fixtures and Accessories
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4510-00-001-7828 4510-00-003-5231 4510-00-004-8263 4510-00-004-8383 4510-00-005-2321 4510-00-005-5021 4510-00-006-0067 4510-00-006-5939
SUBSTITUTES & CROSS-REFERENCES 2
2670K14Reference document
Same NSN cross-reference
Reference document — Secondary reference
ASVB-.75-CP-LLSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9903K37?
9903K37 is a BREAKER,VACUUM,FLUSH VALVE.
What parts can replace 9903K37?
There are 2 known substitutes for 9903K37: 2670K14, ASVB-.75-CP-LL. Substitute compatibility should be verified for your specific system.
What is the NSN for 9903K37?
9903K37 is cataloged in the U.S. Government catalog under NSN 4510-01-482-7933. 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.