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18-3-133 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

18-3-133: DISK,VALVE.

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

Government catalog under NSN 4820-00-097-1581, 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
18-3-133
NSN: 4820-00-097-1581
NIINs: 000971581, 005126508
FSC: 4820 — Valves, Nonpowered
CAGE: 75954 — KUNKLE INDUSTRIES INC LONERGAN VALVE DIV (USA)
SPECIFICATIONS
materialSTEEL
NSN4820-00-097-1581
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 18-3-133 · 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
•
PRESSURE RATING: 135.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
OUTSIDE DIAMETER: 0.938 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLUG
•
SEAT ANGLE: 45.0 DEGREES NOMINAL
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
MEDIA FOR WHICH DESIGNED: OIL
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.215 INCHES NOMINAL IN
PRESSURE RATING135.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
OUTSIDE DIAMETER0.938 INCHES NOMINAL IN
STYLE DESIGNATORPLUG
SEAT ANGLE45.0 DEGREES NOMINAL
NOMINAL THREAD SIZE0.375 INCHES IN
MEDIA FOR WHICH DESIGNEDOIL
THREAD CLASS2B
MATERIALSTEEL CORROSION RESISTING
THREAD SERIES DESIGNATORUNF
SUBSTITUTES & CROSS-REFERENCES 7
NMP441PC18Reference document
Same NSN cross-reference
Reference document — Secondary reference
NMP345PC18Reference document
Same NSN cross-reference
Reference document — Secondary reference
005-300-0002Reference document
Same NSN cross-reference
Reference document — Secondary reference
18-3-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
NMP408PC18Reference document
Same NSN cross-reference
Reference document — Secondary reference
NMP315PC18Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 18-3-133?
18-3-133 is a DISK,VALVE.
What parts can replace 18-3-133?
There are 7 known substitutes for 18-3-133: NMP441PC18, NMP345PC18, 005-300-0002 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-3-133?
18-3-133 is cataloged in the U.S. Government catalog under NSN 4820-00-097-1581. 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.