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4390 — MICROCIRCUIT,DIGITAL

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

4390: MICROCIRCUIT,DIGITAL.

The MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include end_item_identification: LAUNCH AND TEST RANGE SYSTEM, part_name_assigned_by_controlling_agency: POWER SUPPLY 90VAC-240VAC VAC. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-469-0358, 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
MRO→ MRO_GENERAL→ 4390
NSN: 4820-00-469-0358
NIINs: 004690358, 005284514, 005293198, 006573635, 008100059, 009580339, 009908902, 011154425, 011631204, 012721057, 014112848, 014315672, 014384474, 016662471, 016808212
FSC: 4820 — Valves, Nonpowered
CAGE: 71905 — DERBYSHIRE MACHINE & TOOL CO (USA)
SPECIFICATIONS
end_item_identificationLAUNCH AND TEST RANGE SYSTEM
part_name_assigned_by_controlling_agencyPOWER SUPPLY 90VAC-240VAC VAC
NSN4820-00-469-0358
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4390 · 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
•
FLOW CONTROL DEVICE: DISK
•
FLANGE SHAPE: ROUND WITH HOLES FIRST END
•
FLANGE FACE DESIGN: RAISED STRAIGHT FIRST END
•
BOLT CIRCLE NOMINAL DIAMETER: 5.500 INCHES FIRST END IN
•
MOUNTING POSITION: VERTICAL
•
CONNECTION TYPE: FLANGE FIRST END
•
STYLE DESIGNATOR: STRAIGHT THRU
•
BOLT HOLE NOMINAL DIAMETER: 0.562 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
FLANGE SHAPEROUND WITH HOLES FIRST END
FLANGE FACE DESIGNRAISED STRAIGHT FIRST END
BOLT CIRCLE NOMINAL DIAMETER5.500 INCHES FIRST END IN
MOUNTING POSITIONVERTICAL
CONNECTION TYPEFLANGE FIRST END
STYLE DESIGNATORSTRAIGHT THRU
BOLT HOLE NOMINAL DIAMETER0.562 INCHES FIRST END IN
OPERATING PRESSURE350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL OUTSIDE DIAMETER6.625 INCHES FIRST END IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 4390?
4390 is a MICROCIRCUIT,DIGITAL. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 4390?
4390 is cataloged in the U.S. Government catalog under NSN 4820-00-469-0358. 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.