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211055678 — CAP,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

211055678: CAP,VALVE.

The CAP,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, attachment_method: DRILLED HOLE, end_item_identification: SEAWOLF CLASS SSN, valve_size_for_which_designed: 2.000 INCHES IN, valve_type_for_which_designed: BALL, valve_model_number_for_which_designed: AY81. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-415-8292, 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
211055678
NSN: 4820-01-415-8292
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY
attachment_methodDRILLED HOLE
end_item_identificationSEAWOLF CLASS SSN
valve_size_for_which_designed2.000 INCHES IN
valve_type_for_which_designedBALL
valve_model_number_for_which_designedAY81
NSN4820-01-415-8292
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 211055678 · 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
•
VALVE TYPE FOR WHICH DESIGNED: BALL
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: AY81
•
VALVE SIZE FOR WHICH DESIGNED: 2.000 INCHES IN
•
MATERIAL: NICKEL ALLOY
•
ATTACHMENT METHOD: DRILLED HOLE
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDBALL
VALVE MODEL NUMBER FOR WHICH DESIGNEDAY81
VALVE SIZE FOR WHICH DESIGNED2.000 INCHES IN
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIALNICKEL ALLOY
ATTACHMENT METHODDRILLED HOLE
SUBSTITUTES & CROSS-REFERENCES 3
DF330644Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6408784Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
DF330644 FIND 68Same 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 211055678?
211055678 is a CAP,VALVE.
What parts can replace 211055678?
There are 3 known substitutes for 211055678: DF330644, 6408784, DF330644 FIND 68. Substitute compatibility should be verified for your specific system.
What is the NSN for 211055678?
211055678 is cataloged in the U.S. Government catalog under NSN 4820-01-415-8292. 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.