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478 1551-803 — VALVE OVERLOAD

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

478 1551-803: VALVE OVERLOAD.

The VALVE OVERLOAD is a the manufacturer industrial component. Key specifications include end_item_identification: T-AKR 287 ALOGL SL-7 TYPE FAST SEALIFT SHIP. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-493-6402, 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
478 1551-803
NSN: 4820-01-493-6402
FSC: 4820 — Valves, Nonpowered
CAGE: A184N — KALMAR SOLUTIONS AB (SWE)
SPECIFICATIONS
end_item_identificationT-AKR 287 ALOGL SL-7 TYPE FAST SEALIFT SHIP
NSN4820-01-493-6402
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 478 1551-803 · 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONT-AKR 287 ALOGL SL-7 TYPE FAST SEALIFT SHIP
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
478 1551-803 TAReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 478 1551-803?
478 1551-803 is a VALVE OVERLOAD.
What parts can replace 478 1551-803?
There is 1 known substitute for 478 1551-803: 478 1551-803 TA. Substitute compatibility should be verified for your specific system.
What is the NSN for 478 1551-803?
478 1551-803 is cataloged in the U.S. Government catalog under NSN 4820-01-493-6402. 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.