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218020212 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

218020212: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, overall_height: 9.344 INCHES NOMINAL IN, inside_diameter: 4.200 INCHES NOMINAL IN, outside_diameter: 4.951 INCHES NOMINAL IN, end_item_identification: SEAWOLF CLASS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-442-0749, 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
218020212
NSN: 4820-01-442-0749
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_height9.344 INCHES NOMINAL IN
inside_diameter4.200 INCHES NOMINAL IN
outside_diameter4.951 INCHES NOMINAL IN
end_item_identificationSEAWOLF CLASS SSN
NSN4820-01-442-0749
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 218020212 · 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
•
OUTSIDE DIAMETER: 4.951 INCHES NOMINAL IN
•
INSIDE DIAMETER: 4.200 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT9.344 INCHES NOMINAL IN
OUTSIDE DIAMETER4.951 INCHES NOMINAL IN
INSIDE DIAMETER4.200 INCHES NOMINAL IN
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALNICKEL ALLOY
SUBSTITUTES & CROSS-REFERENCES 5
801-6556655 FIND A8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2643-1002-63 FN A8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6556655Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
801-6556655-A8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2643-1002-63Reference 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 218020212?
218020212 is a DISK,VALVE.
What parts can replace 218020212?
There are 5 known substitutes for 218020212: 801-6556655 FIND A8, 2643-1002-63 FN A8, 6556655 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 218020212?
218020212 is cataloged in the U.S. Government catalog under NSN 4820-01-442-0749. 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.