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512-6404652-AY86 — GEAR OPERATOR,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

512-6404652-AY86: GEAR OPERATOR,VALVE.

The GEAR OPERATOR,VALVE is a the manufacturer industrial component. Key specifications include special_features: DIESEL EXHAUST BACK-UP VALVE,HOUSING AND GEARBOX ASSY., end_item_identification: SEAWOLF CLASS SUBMARINE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-378-5595, 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
512-6404652-AY86
NSN: 4820-01-378-5595
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
special_featuresDIESEL EXHAUST BACK-UP VALVE,HOUSING AND GEARBOX ASSY.
end_item_identificationSEAWOLF CLASS SUBMARINE
NSN4820-01-378-5595
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 512-6404652-AY86 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESDIESEL EXHAUST BACK-UP VALVE,HOUSING AND GEARBOX ASSY.
END ITEM IDENTIFICATIONSEAWOLF CLASS SUBMARINE
SUBSTITUTES & CROSS-REFERENCES 1
6404652Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 512-6404652-AY86?
512-6404652-AY86 is a GEAR OPERATOR,VALVE.
What parts can replace 512-6404652-AY86?
There is 1 known substitute for 512-6404652-AY86: 6404652. Substitute compatibility should be verified for your specific system.
What is the NSN for 512-6404652-AY86?
512-6404652-AY86 is cataloged in the U.S. Government catalog under NSN 4820-01-378-5595. 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.