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518-5999520 — VALVE ASSEMBLY,MANIFOLD

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

518-5999520: VALVE ASSEMBLY,MANIFOLD.

The VALVE ASSEMBLY,MANIFOLD is a the manufacturer industrial component. Key specifications include special_features: STEERING GEAR HYDRAULIC SYS UPGRADE TRANSFER VALVE, end_item_identification: 20 VL MANIFOLD. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-320-6044, 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
518-5999520
NSN: 4820-01-320-6044
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
special_featuresSTEERING GEAR HYDRAULIC SYS UPGRADE TRANSFER VALVE
end_item_identification20 VL MANIFOLD
NSN4820-01-320-6044
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 518-5999520 · 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 FEATURESSTEERING GEAR HYDRAULIC SYS UPGRADE TRANSFER VALVE
END ITEM IDENTIFICATION20 VL MANIFOLD
SUBSTITUTES & CROSS-REFERENCES 2
5999520Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BB63-518-5999520Same 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 518-5999520?
518-5999520 is a VALVE ASSEMBLY,MANIFOLD.
What parts can replace 518-5999520?
There are 2 known substitutes for 518-5999520: 5999520, BB63-518-5999520. Substitute compatibility should be verified for your specific system.
What is the NSN for 518-5999520?
518-5999520 is cataloged in the U.S. Government catalog under NSN 4820-01-320-6044. 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.