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D423-5-2-440 — GEAR SECTOR,WORM WHEEL

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

D423-5-2-440: GEAR SECTOR,WORM WHEEL.

The GEAR SECTOR,WORM WHEEL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, gear_type: WORM, gear_ratio: 24 TO 1, features_provided: HANDWHEEL AND INDICATOR GAGE, valve_size_for_which_designed: 2.000 INCHES IN, valve_type_for_which_designed: BUTTERFLY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-345-2999, 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
D423-5-2-440
NSN: 4820-01-345-2999
NIINs: 013452999, 013461867, 013461870
FSC: 4820 — Valves, Nonpowered
CAGE: 04613 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
gear_typeWORM
gear_ratio24 TO 1
features_providedHANDWHEEL AND INDICATOR GAGE
valve_size_for_which_designed2.000 INCHES IN
valve_type_for_which_designedBUTTERFLY
material_document_and_classificationASTM B584 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN4820-01-345-2999
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D423-5-2-440 · 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
KEY FEATURES
•
VALVE TYPE FOR WHICH DESIGNED: BUTTERFLY
•
GEAR TYPE: WORM
•
FEATURES PROVIDED: HANDWHEEL AND INDICATOR GAGE
•
VALVE SIZE FOR WHICH DESIGNED: 2.000 INCHES IN
•
MATERIAL: IRON
•
GEAR RATIO: 24 TO 1
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDBUTTERFLY
GEAR TYPEWORM
FEATURES PROVIDEDHANDWHEEL AND INDICATOR GAGE
VALVE SIZE FOR WHICH DESIGNED2.000 INCHES IN
MATERIALIRON
GEAR RATIO24 TO 1
SUBSTITUTES & CROSS-REFERENCES 2
440-819-020-423-152Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
440-819-020-423Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D423-5-2-440?
D423-5-2-440 is a GEAR SECTOR,WORM WHEEL.
What parts can replace D423-5-2-440?
There are 2 known substitutes for D423-5-2-440: 440-819-020-423-152, 440-819-020-423. Substitute compatibility should be verified for your specific system.
What is the NSN for D423-5-2-440?
D423-5-2-440 is cataloged in the U.S. Government catalog under NSN 4820-01-345-2999. 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.