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PartsTable / COMPONENT / D420-8-12-440
D420-8-12-440 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The TRANSFORMER,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: IRON, gear_type: WORM, gear_ratio: 20 TO 1, features_provided: HANDWHEEL, valve_size_for_which_designed: 8.000 INCHES IN, valve_type_for_which_designed: BUTTERFLY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-252-8484, 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
D420-8-12-440
NSN: 4820-01-252-8484
FSC: 4820
CAGE: 04613 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP (USA)
SPECIFICATIONS
materialIRON
gear_typeWORM
gear_ratio20 TO 1
features_providedHANDWHEEL
valve_size_for_which_designed8.000 INCHES IN
valve_type_for_which_designedBUTTERFLY
NSN4820-01-252-8484
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D420-8-12-440 · 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
•
MATERIAL: IRON
•
GEAR TYPE: WORM
•
GEAR RATIO: 20 TO 1
•
VALVE TYPE FOR WHICH DESIGNED: BUTTERFLY
•
VALVE SIZE FOR WHICH DESIGNED: 8.000 INCHES IN
•
FEATURES PROVIDED: HANDWHEEL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALIRON
GEAR TYPEWORM
GEAR RATIO20 TO 1
VALVE TYPE FOR WHICH DESIGNEDBUTTERFLY
VALVE SIZE FOR WHICH DESIGNED8.000 INCHES IN
FEATURES PROVIDEDHANDWHEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
42014Interchangeable
interchangeable cross-reference
interchangeable
50160-14Interchangeable
interchangeable cross-reference
interchangeable
MILV18436Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-18436Interchangeable
interchangeable cross-reference
interchangeable
17026Interchangeable
interchangeable cross-reference
interchangeable
17027Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D420-8-12-440?
D420-8-12-440 is a TRANSFORMER,RADIO FREQUENCY.
What parts can replace D420-8-12-440?
There are 14 known substitutes for D420-8-12-440: 42014, 50160-14, MILV18436 and 11 more. Substitute compatibility should be verified for your specific system.
Is D420-8-12-440 still available?
D420-8-12-440 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026