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18-3G-305 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

18-3G-305: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 2B, overall_height: 2.156 INCHES NOMINAL IN, shank_diameter: 1.625 INCHES NOMINAL IN, flange_diameter: 2.750 INCHES NOMINAL IN, outside_diameter: 1.500 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-135-0363, 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
18-3G-305
NSN: 4820-01-135-0363
FSC: 4820 — Valves, Nonpowered
CAGE: 75954 — KUNKLE INDUSTRIES INC LONERGAN VALVE DIV (USA)
SPECIFICATIONS
materialSTEEL
thread_class2B
overall_height2.156 INCHES NOMINAL IN
shank_diameter1.625 INCHES NOMINAL IN
flange_diameter2.750 INCHES NOMINAL IN
outside_diameter1.500 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN
style_designatorSOLID
nominal_thread_size0.750 INCHES IN
thread_series_designatorUNF
NSN4820-01-135-0363
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 18-3G-305 · 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
•
SHANK DIAMETER: 1.625 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.750 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.500 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
THREAD CLASS: 2B
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER1.625 INCHES NOMINAL IN
FLANGE DIAMETER2.750 INCHES NOMINAL IN
OVERALL HEIGHT2.156 INCHES NOMINAL IN
OUTSIDE DIAMETER1.500 INCHES MINIMUM AND 2.660 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID
NOMINAL THREAD SIZE0.750 INCHES IN
THREAD CLASS2B
MATERIALSTEEL
THREAD SERIES DESIGNATORUNF
SUBSTITUTES & CROSS-REFERENCES 4
005-309-0209Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
005-309-0209NReference document
Same NSN cross-reference
Reference document — Secondary reference
NMP-861Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
NMP-861 PC 22Reference 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 18-3G-305?
18-3G-305 is a DISK,VALVE.
What parts can replace 18-3G-305?
There are 4 known substitutes for 18-3G-305: 005-309-0209, 005-309-0209N, NMP-861 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-3G-305?
18-3G-305 is cataloged in the U.S. Government catalog under NSN 4820-01-135-0363. 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.