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D-3370028 — VALVE,REGULATING,FLUID PRESSURE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

D-3370028: VALVE,REGULATING,FLUID PRESSURE.

VALVE,REGULATING,FLUID PRESSURE. Key specifications include material: COPPER ALLOY, external_thread_size: 1/4-18, internal_thread_size: 1/8-27, end_item_identification: WHIDBEY ISLAND CLASS LSD, external_screw_thread_series_designator: NPT, internal_screw_thread_series_designator: NPT. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-415-1085, 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
D-3370028
NSN: 4730-01-415-1085
NIINs: 014151085, 014178457
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 03847 — WARREN CONTROLS, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY
external_thread_size1/4-18
internal_thread_size1/8-27
end_item_identificationWHIDBEY ISLAND CLASS LSD
external_screw_thread_series_designatorNPT
internal_screw_thread_series_designatorNPT
NSN4730-01-415-1085
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: D-3370028 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
•
EXTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
•
EXTERNAL THREAD SIZE: 1/4-18
•
INTERNAL THREAD SIZE: 1/8-27
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
INTERNAL SCREW THREAD SERIES DESIGNATORNPT
EXTERNAL SCREW THREAD SERIES DESIGNATORNPT
EXTERNAL THREAD SIZE1/4-18
END ITEM IDENTIFICATIONWHIDBEY ISLAND CLASS LSD
INTERNAL THREAD SIZE1/8-27
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 1
D-3370028 ITEM 15Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 D-3370028?
D-3370028 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace D-3370028?
There is 1 known substitute for D-3370028: D-3370028 ITEM 15. Substitute compatibility should be verified for your specific system.
What is the NSN for D-3370028?
D-3370028 is cataloged in the U.S. Government catalog under NSN 4730-01-415-1085. 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.