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211055730 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

211055730: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC ACETAL OVERALL, body_inside_diameter: 1.250 INCHES NOMINAL IN, body_outside_diameter: 2.122 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-371-2637, 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
211055730
NSN: 4820-01-371-2637
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC ACETAL OVERALL
body_inside_diameter1.250 INCHES NOMINAL IN
body_outside_diameter2.122 INCHES NOMINAL IN
NSN4820-01-371-2637
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 211055730 · 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: 2.122 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: PLASTIC ACETAL OVERALL
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER2.122 INCHES NOMINAL IN
BODY INSIDE DIAMETER1.250 INCHES NOMINAL IN
MATERIALPLASTIC ACETAL OVERALL
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
801-6408782-54Reference 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 211055730?
211055730 is a SEAT,VALVE.
What parts can replace 211055730?
There is 1 known substitute for 211055730: 801-6408782-54. Substitute compatibility should be verified for your specific system.
What is the NSN for 211055730?
211055730 is cataloged in the U.S. Government catalog under NSN 4820-01-371-2637. 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.