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Technical Data Sheet
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211055648 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

211055648: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-349-7807, 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
211055648
NSN: 4820-01-349-7807
NIINs: 013497807, 015295229
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
reference_number_differentiating_characteristicsITEMS THAT SUPPORT A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACGUISITION PROCESS.
NSN4820-01-349-7807
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 211055648 · 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
•
BODY OUTSIDE DIAMETER: 2.463 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.560 INCHES NOMINAL IN
•
SEAT RADIUS: 0.246 INCHES NOMINAL IN
•
MATERIAL: PLASTIC ACETAL OVERALL
•
SEATING SURFACE SHAPE: RADIAL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.312 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER2.463 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.560 INCHES NOMINAL IN
SEAT RADIUS0.246 INCHES NOMINAL IN
MATERIALPLASTIC ACETAL OVERALL
SEATING SURFACE SHAPERADIAL
SUBSTITUTES & CROSS-REFERENCES 4
DF331468 FIND 8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6408784 PC 8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
801-6408784Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
801-6408784-8Same 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 211055648?
211055648 is a SEAT,VALVE.
What parts can replace 211055648?
There are 4 known substitutes for 211055648: DF331468 FIND 8, 6408784 PC 8, 801-6408784 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 211055648?
211055648 is cataloged in the U.S. Government catalog under NSN 4820-01-349-7807. 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.