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8955-005-139-S — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8955-005-139-S: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, seat_angle: 15.0 DEGREES MAXIMUM, overall_height: 4.2188 INCHES MAXIMUM IN, special_features: W/S NIMITZ CLASS CVN, style_designator: SOLID WEDGE, end_item_identification: 4.00IN "BOLTED BONNET GATE VALVES" IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-466-9550, 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
8955-005-139-S
NSN: 4820-01-466-9550
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
seat_angle15.0 DEGREES MAXIMUM
overall_height4.2188 INCHES MAXIMUM IN
special_featuresW/S NIMITZ CLASS CVN
style_designatorSOLID WEDGE
end_item_identification4.00IN "BOLTED BONNET GATE VALVES" IN
NSN4820-01-466-9550
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8955-005-139-S · 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
•
STYLE DESIGNATOR: SOLID WEDGE
•
SEAT ANGLE: 15.0 DEGREES MAXIMUM
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT4.2188 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID WEDGE
SEAT ANGLE15.0 DEGREES MAXIMUM
SPECIAL FEATURESW/S NIMITZ CLASS CVN
END ITEM IDENTIFICATION4.00IN "BOLTED BONNET GATE VALVES" IN
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 2
88530-20 ITEM 5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
88530-20Reference 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 8955-005-139-S?
8955-005-139-S is a DISK,VALVE.
What parts can replace 8955-005-139-S?
There are 2 known substitutes for 8955-005-139-S: 88530-20 ITEM 5, 88530-20. Substitute compatibility should be verified for your specific system.
What is the NSN for 8955-005-139-S?
8955-005-139-S is cataloged in the U.S. Government catalog under NSN 4820-01-466-9550. 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.