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7550477-A25 — GEAR OPERATOR,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

7550477-A25: GEAR OPERATOR,VALVE.

The GEAR OPERATOR,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-657-4769, 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
7550477-A25
NSN: 4820-01-657-4769
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number7550477-A25
NSN4820-01-657-4769
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 7550477-A25 · 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 3
G525-4301 PN A1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
G547-0001-A25Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7384909 PN A1Reference 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 7550477-A25?
7550477-A25 is a GEAR OPERATOR,VALVE.
What parts can replace 7550477-A25?
There are 3 known substitutes for 7550477-A25: G525-4301 PN A1, G547-0001-A25, 7384909 PN A1. Substitute compatibility should be verified for your specific system.
What is the NSN for 7550477-A25?
7550477-A25 is cataloged in the U.S. Government catalog under NSN 4820-01-657-4769. 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.