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118181 — VALVE,DIAPHRAGM,STOP

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

118181: VALVE,DIAPHRAGM,STOP.

The VALVE,DIAPHRAGM,STOP is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON, body_style: DISK, overall_height: 0.040 INCHES NOMINAL IN, overall_diameter: 0.100 INCHES NOMINAL IN, unthreaded_mounting_hole_diameter: 0.045 INCHES NOMINAL SINGLE MOUNTING FACILITY IN, mounting_facility_type_and_quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-132-0583, 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
MRO→ MRO_GENERAL→ 118181
NSN: 4820-01-132-0583
NIINs: 011320583, 012620208, 013842032
FSC: 4820 — Valves, Nonpowered
CAGE: 11331 — WILLIAMS CONTROLS INC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
body_styleDISK
overall_height0.040 INCHES NOMINAL IN
overall_diameter0.100 INCHES NOMINAL IN
unthreaded_mounting_hole_diameter0.045 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
mounting_facility_type_and_quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
NSN4820-01-132-0583
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 118181 · 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
SUBSTITUTES & CROSS-REFERENCES 6
1321580Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
118188Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
10525653Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
378414Reference document
Same NSN cross-reference
Reference document — Secondary reference
6322-118181Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4820011320583Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 118181?
118181 is a VALVE,DIAPHRAGM,STOP. It is classified as a MRO (MRO_GENERAL).
What parts can replace 118181?
There are 6 known substitutes for 118181: 1321580, 118188, 10525653 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 118181?
118181 is cataloged in the U.S. Government catalog under NSN 4820-01-132-0583. 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.