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218015925 — RETAINER,DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

218015925: RETAINER,DISK,VALVE.

The RETAINER,DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, inside_diameter: 0.323 INCHES NOMINAL IN, outside_diameter: 1.000 INCHES NOMINAL IN, end_item_identification: SEAWOLF CLASS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-418-1719, 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
218015925
NSN: 4820-01-418-1719
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
inside_diameter0.323 INCHES NOMINAL IN
outside_diameter1.000 INCHES NOMINAL IN
end_item_identificationSEAWOLF CLASS SSN
NSN4820-01-418-1719
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 218015925 · 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: 1.000 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.323 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
INSIDE DIAMETER0.323 INCHES NOMINAL IN
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALSTEEL CORROSION RESISTING
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 4
C791-5401 FIND MPBR-A14Reference document
Same NSN cross-reference
Reference document — Secondary reference
DF2300-4640 FIND MPBR-A14Reference document
Same NSN cross-reference
Reference document — Secondary reference
556-6406378-MPBR-B14Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
556-6406378-MPBR-A14Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 218015925?
218015925 is a RETAINER,DISK,VALVE.
What parts can replace 218015925?
There are 4 known substitutes for 218015925: C791-5401 FIND MPBR-A14, DF2300-4640 FIND MPBR-A14, 556-6406378-MPBR-B14 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 218015925?
218015925 is cataloged in the U.S. Government catalog under NSN 4820-01-418-1719. 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.