PartsTable
Technical Data Sheet
Download PDF

211055128 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

211055128: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEAT, overall_height: 0.625 INCHES NOMINAL IN, style_designator: PLAIN, body_inside_diameter: 2.180 INCHES NOMINAL IN, body_outside_diameter: 3.622 INCHES NOMINAL IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-450-2564, 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
211055128
NSN: 4820-01-450-2564
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEAT
overall_height0.625 INCHES NOMINAL IN
style_designatorPLAIN
body_inside_diameter2.180 INCHES NOMINAL IN
body_outside_diameter3.622 INCHES NOMINAL IN
seating_surface_shapeFLAT
end_item_identificationSEAWOLF CLASS SSN
NSN4820-01-450-2564
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 211055128 · 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: 3.622 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 2.180 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC SEAT
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.625 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER3.622 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER2.180 INCHES NOMINAL IN
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALRUBBER SYNTHETIC SEAT
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 2
801-6408779 FIND 56Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6408779Reference 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
Ready to buy 211055128?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 211055128?
211055128 is a SEAT,VALVE.
What parts can replace 211055128?
There are 2 known substitutes for 211055128: 801-6408779 FIND 56, 6408779. Substitute compatibility should be verified for your specific system.
What is the NSN for 211055128?
211055128 is cataloged in the U.S. Government catalog under NSN 4820-01-450-2564. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 211055128

✓ 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.