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956-00012 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

956-00012: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-173-8427, 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
956-00012
NSN: 4820-01-173-8427
NIINs: 011738427, 012335298
FSC: 4820 — Valves, Nonpowered
CAGE: 12004 — NAVAL SEA SYSTEMS COMMAND LOGISTICS SUPPORT ENGINEERING ACTIVITY (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
NSN4820-01-173-8427
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 956-00012 · 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 FEATURESCONSISTS OF ONE O-RING, RUBBER, MIL-P-25732; ONE DISK; ONE PIVOT PIN; TWO RETAINING RINGS; TWO FLANGED BUSHINGS; TWO BUSHING SLEEVES; ONE BUMNPER TIP AND ONE COTTER PIN, MONEL
SUBSTITUTES & CROSS-REFERENCES 1
956-00012-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 956-00012?
956-00012 is a DISK,VALVE.
What parts can replace 956-00012?
There is 1 known substitute for 956-00012: 956-00012-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 956-00012?
956-00012 is cataloged in the U.S. Government catalog under NSN 4820-01-173-8427. 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.