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1388718 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1388718: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, seat_radius: 0.406 INCHES NOMINAL IN, thread_class: 2A A, overall_height: 2.500 INCHES NOMINAL IN, outside_diameter: 0.933 INCHES NOMINAL IN, nominal_thread_size: 0.375 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-175-8378, 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
1388718
NSN: 4820-00-175-8378
FSC: 4820 — Valves, Nonpowered
CAGE: 90099 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV MARINE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
seat_radius0.406 INCHES NOMINAL IN
thread_class2A A
overall_height2.500 INCHES NOMINAL IN
outside_diameter0.933 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN4820-00-175-8378
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1388718 · 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: 0.933 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
SEAT RADIUS: 0.406 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
MATERIAL: STEEL CORROSION RESISTING
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.500 INCHES NOMINAL IN
OUTSIDE DIAMETER0.933 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.375 INCHES IN
SEAT RADIUS0.406 INCHES NOMINAL IN
THREAD CLASS2A A
MATERIALSTEEL CORROSION RESISTING
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
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 3
29J325PC162Reference document
Same NSN cross-reference
Reference document — Secondary reference
29J368PC9Reference document
Same NSN cross-reference
Reference document — Secondary reference
29J368PC169Reference 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 1388718?
1388718 is a DISK,VALVE.
What parts can replace 1388718?
There are 3 known substitutes for 1388718: 29J325PC162, 29J368PC9, 29J368PC169. Substitute compatibility should be verified for your specific system.
What is the NSN for 1388718?
1388718 is cataloged in the U.S. Government catalog under NSN 4820-00-175-8378. 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.