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6408790 — 6408790

✓ Government record, cited
NAVAL SEA SYSTEMS COMMAND · GATE VALVE
PRODUCT OVERVIEW

6408790: 6408790.

The 6408790 is a NAVAL SEA SYSTEMS COMMAND industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-455-5536, 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
6408790
NSN: 4820-01-455-5536
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number6408790
ManufacturerNAVAL SEA SYSTEMS COMMAND
NSN4820-01-455-5536
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6408790 · NAVAL SEA SYSTEMS COMMAND ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BODY OUTSIDE DIAMETER: 4.498 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 3.006 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
•
SEATING SURFACE SHAPE: ANGULAR
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.585 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER4.498 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER3.006 INCHES NOMINAL IN
SPECIAL FEATURESFOR BALL VALVE SZ 3.000 IN. IN
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES 1
801-6408790 FIND 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 6408790?
6408790 is a 6408790 manufactured by NAVAL SEA SYSTEMS COMMAND.
What parts can replace 6408790?
There is 1 known substitute for 6408790: 801-6408790 FIND 4. Substitute compatibility should be verified for your specific system.
What is the NSN for 6408790?
6408790 is cataloged in the U.S. Government catalog under NSN 4820-01-455-5536. 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.