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221481 — ROTOR,PUMP

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

221481: ROTOR,PUMP.

The ROTOR,PUMP is a the manufacturer industrial component. Key specifications include special_features: LOWER CAP, end_item_identification: USED ON HYDRAULIC TEST STAND FOR AIRCRAFT GROUND SUPPORT AND TEST EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-249-7149, 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
221481
NSN: 4820-01-249-7149
NIINs: 012497149, 013055522, 013124159
FSC: 4820 — Valves, Nonpowered
CAGE: 56529 — HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC (USA)
SPECIFICATIONS
special_featuresLOWER CAP
end_item_identificationUSED ON HYDRAULIC TEST STAND FOR AIRCRAFT GROUND SUPPORT AND TEST EQUIPMENT
NSN4820-01-249-7149
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 221481 · 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
SPECIAL FEATURESLOWER CAP
END ITEM IDENTIFICATIONUSED ON HYDRAULIC TEST STAND FOR AIRCRAFT GROUND SUPPORT AND TEST EQUIPMENT
SUBSTITUTES & CROSS-REFERENCES 1
4820PL0578708Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 221481?
221481 is a ROTOR,PUMP.
What parts can replace 221481?
There is 1 known substitute for 221481: 4820PL0578708. Substitute compatibility should be verified for your specific system.
What is the NSN for 221481?
221481 is cataloged in the U.S. Government catalog under NSN 4820-01-249-7149. 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.