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8957-040-031-SG — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8957-040-031-SG: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, seat_angle: 37.0 DEGREES NOMINAL, overall_height: 6.280 INCHES NOMINAL IN, style_designator: SOLID WEDGE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-182-7386, 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
8957-040-031-SG
NSN: 4820-01-182-7386
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL
seat_angle37.0 DEGREES NOMINAL
overall_height6.280 INCHES NOMINAL IN
style_designatorSOLID WEDGE
NSN4820-01-182-7386
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8957-040-031-SG · 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: 37.0 DEGREES NOMINAL
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT6.280 INCHES NOMINAL IN
STYLE DESIGNATORSOLID WEDGE
SEAT ANGLE37.0 DEGREES NOMINAL
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 3
8872-12PC6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
8872-12Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
8957-003-148Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 8957-040-031-SG?
8957-040-031-SG is a DISK,VALVE.
What parts can replace 8957-040-031-SG?
There are 3 known substitutes for 8957-040-031-SG: 8872-12PC6, 8872-12, 8957-003-148. Substitute compatibility should be verified for your specific system.
What is the NSN for 8957-040-031-SG?
8957-040-031-SG is cataloged in the U.S. Government catalog under NSN 4820-01-182-7386. 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.