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801-6408784-64 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

801-6408784-64: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE SEAT, overall_height: 0.375 INCHES NOMINAL IN, style_designator: PLAIN, body_inside_diameter: 1.938 INCHES NOMINAL IN, body_outside_diameter: 2.925 INCHES MINIMUM AND 2.931 INCHES MAXIMUM IN, criticality_code_justification: ZZZY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-377-3890, 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
801-6408784-64
NSN: 4820-01-377-3890
NIINs: 013773890, 016332963
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE SEAT
overall_height0.375 INCHES NOMINAL IN
style_designatorPLAIN
body_inside_diameter1.938 INCHES NOMINAL IN
body_outside_diameter2.925 INCHES MINIMUM AND 2.931 INCHES MAXIMUM IN
criticality_code_justificationZZZY
NSN4820-01-377-3890
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 801-6408784-64 · 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
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE SEAT
TECHNICAL CHARACTERISTICS
SPECIAL FEATURES2.928 IN. OD BY 1.938 IN. ID; 0.375 IN. THK IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE SEAT
SUBSTITUTES & CROSS-REFERENCES 3
DF330644Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
DF330644 FN-64Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6408784Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 801-6408784-64?
801-6408784-64 is a SEAT,VALVE.
What parts can replace 801-6408784-64?
There are 3 known substitutes for 801-6408784-64: DF330644, DF330644 FN-64, 6408784. Substitute compatibility should be verified for your specific system.
What is the NSN for 801-6408784-64?
801-6408784-64 is cataloged in the U.S. Government catalog under NSN 4820-01-377-3890. 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.