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421-981-021-000 — ACTUATOR,HYDRAULIC-PNEUMATIC,ROT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

421-981-021-000: ACTUATOR,HYDRAULIC-PNEUMATIC,ROT.

ACTUATOR,HYDRAULIC-PNEUMATIC,ROT. Key specifications include special_features: SPRING RETURN, end_item_identification: 4920-01-218-4171. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-411-4189, 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
421-981-021-000
NSN: 4810-01-411-4189
FSC: 4810 — Valves, Powered
CAGE: 01170 — BELLOFRAM CORPORATION (USA)
SPECIFICATIONS
special_featuresSPRING RETURN
end_item_identification4920-01-218-4171
NSN4810-01-411-4189
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 421-981-021-000 · 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 FEATURESSPRING RETURN
END ITEM IDENTIFICATION4920-01-218-4171
SUBSTITUTES & CROSS-REFERENCES 2
2755171-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2755171Reference document
Same NSN cross-reference
Reference document — Drawing number 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 421-981-021-000?
421-981-021-000 is a ACTUATOR,HYDRAULIC-PNEUMATIC,ROT.
What parts can replace 421-981-021-000?
There are 2 known substitutes for 421-981-021-000: 2755171-21, 2755171. Substitute compatibility should be verified for your specific system.
What is the NSN for 421-981-021-000?
421-981-021-000 is cataloged in the U.S. Government catalog under NSN 4810-01-411-4189. 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.