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8539-026-031 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8539-026-031: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, taper_length: 20.500 INCHES NOMINAL IN, style_designator: SOLID WEDGE, taper_minor_diameter: 3.000 INCHES NOMINAL IN, end_item_identification: NIMITZ CLASS CVN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-445-0873, 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
8539-026-031
NSN: 4820-01-445-0873
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
taper_length20.500 INCHES NOMINAL IN
style_designatorSOLID WEDGE
taper_minor_diameter3.000 INCHES NOMINAL IN
end_item_identificationNIMITZ CLASS CVN
NSN4820-01-445-0873
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8539-026-031 · 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
•
TAPER MINOR DIAMETER: 3.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID WEDGE
•
TAPER LENGTH: 20.500 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
TAPER MINOR DIAMETER3.000 INCHES NOMINAL IN
STYLE DESIGNATORSOLID WEDGE
TAPER LENGTH20.500 INCHES NOMINAL IN
END ITEM IDENTIFICATIONNIMITZ CLASS CVN
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 2
9799-733 ITEM 4 20INSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9799-733Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8539-026-031?
8539-026-031 is a DISK,VALVE.
What parts can replace 8539-026-031?
There are 2 known substitutes for 8539-026-031: 9799-733 ITEM 4 20IN, 9799-733. Substitute compatibility should be verified for your specific system.
What is the NSN for 8539-026-031?
8539-026-031 is cataloged in the U.S. Government catalog under NSN 4820-01-445-0873. 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.