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801-6404977-22 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

801-6404977-22: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, fsc_application_data: VALVE B 3WAY, seating_surface_shape: O-RING, end_item_identification: VALVE B 3 WAY, seal_accommodation_type: GROOVED. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-344-6491, 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
801-6404977-22
NSN: 4820-01-344-6491
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
fsc_application_dataVALVE B 3WAY
seating_surface_shapeO-RING
end_item_identificationVALVE B 3 WAY
seal_accommodation_typeGROOVED
NSN4820-01-344-6491
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 801-6404977-22 · OEM ⚠ 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
•
FSC APPLICATION DATA: VALVE B 3WAY
•
SEAL ACCOMMODATION TYPE: GROOVED
•
MATERIAL: PLASTIC OVERALL
•
SEATING SURFACE SHAPE: O-RING
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAVALVE B 3WAY
SEAL ACCOMMODATION TYPEGROOVED
END ITEM IDENTIFICATIONVALVE B 3 WAY
MATERIALPLASTIC OVERALL
SEATING SURFACE SHAPEO-RING
SUBSTITUTES & CROSS-REFERENCES 2
801-6404977 FIND 22Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DF330654 FIND 22Same 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 801-6404977-22?
801-6404977-22 is a SEAT,VALVE.
What parts can replace 801-6404977-22?
There are 2 known substitutes for 801-6404977-22: 801-6404977 FIND 22, DF330654 FIND 22. Substitute compatibility should be verified for your specific system.
What is the NSN for 801-6404977-22?
801-6404977-22 is cataloged in the U.S. Government catalog under NSN 4820-01-344-6491. 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.