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1387358 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1387358: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-00-337-1178, 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
1387358
NSN: 4820-00-337-1178
FSC: 4820 — Valves, Nonpowered
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)
SPECIFICATIONS
Part Number1387358
NSN4820-00-337-1178
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1387358 · 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
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 5
25J491PC7Reference document
Same NSN cross-reference
Reference document — Secondary reference
25J553PC198Reference document
Same NSN cross-reference
Reference document — Secondary reference
25J427PC198Reference document
Same NSN cross-reference
Reference document — Secondary reference
25J492PC12-62Reference document
Same NSN cross-reference
Reference document — Secondary reference
25J641PC198Reference 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 1387358?
1387358 is a SEAT,VALVE.
What parts can replace 1387358?
There are 5 known substitutes for 1387358: 25J491PC7, 25J553PC198, 25J427PC198 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1387358?
1387358 is cataloged in the U.S. Government catalog under NSN 4820-00-337-1178. 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.