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18-3-190 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

18-3-190: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thread_class: 2B, overall_height: 1.386 INCHES NOMINAL IN, outside_diameter: 0.950 INCHES MINIMUM AND 1.012 INCHES MAXIMUM IN, nominal_thread_size: 0.500 INCHES IN, thread_series_designator: UNF. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-974-7739, 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
18-3-190
NSN: 4820-00-974-7739
FSC: 4820 — Valves, Nonpowered
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thread_class2B
overall_height1.386 INCHES NOMINAL IN
outside_diameter0.950 INCHES MINIMUM AND 1.012 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
thread_series_designatorUNF
NSN4820-00-974-7739
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 18-3-190 · 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
•
OUTSIDE DIAMETER: 0.950 INCHES MINIMUM AND 1.012 INCHES MAXIMUM IN
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
THREAD CLASS: 2B
•
MATERIAL: STEEL CORROSION RESISTING
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.386 INCHES NOMINAL IN
OUTSIDE DIAMETER0.950 INCHES MINIMUM AND 1.012 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.500 INCHES IN
THREAD CLASS2B
MATERIALSTEEL CORROSION RESISTING
THREAD SERIES DESIGNATORUNF
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
C3295SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 18-3-190?
18-3-190 is a DISK,VALVE.
What parts can replace 18-3-190?
There is 1 known substitute for 18-3-190: C3295S. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-3-190?
18-3-190 is cataloged in the U.S. Government catalog under NSN 4820-00-974-7739. 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.