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PartsTable / COMPONENT / 4320-U-183
4320-U-183 ✓ 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 DISK,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, slot_depth: 0.187 INCHES SINGLE END IN, slot_width: 0.070 INCHES SINGLE END IN, largest_width: 0.156 INCHES SINGLE END IN, overall_height: 0.514 INCHES IN, terminal_length: 0.219 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-566-5315, 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
4320-U-183
NSN: 4820-01-566-5315
FSC: 4820
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
slot_depth0.187 INCHES SINGLE END IN
slot_width0.070 INCHES SINGLE END IN
largest_width0.156 INCHES SINGLE END IN
overall_height0.514 INCHES IN
terminal_length0.219 INCHES IN
overall_diameter0.156 INCHES IN
special_featuresPRESSURE RATING 100 PSI. MAX. W.O.G.
attachment_methodBOLTS
basic_shape_styleTUBULAR, ROUND
precious_materialGOLD AND SILVER
surface_treatmentGOLD OVERALL SECOND LAYER
NSN4820-01-566-5315
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4320-U-183 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
140-1784-04-03-00Interchangeable
interchangeable cross-reference
interchangeable
M55155/32-6Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-55155/32Interchangeable
interchangeable cross-reference
interchangeable
407018-3Interchangeable
interchangeable cross-reference
interchangeable
10-3243-4Interchangeable
interchangeable cross-reference
interchangeable
458-56181-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4320-U-183?
4320-U-183 is a DISK,VALVE.
What parts can replace 4320-U-183?
There are 12 known substitutes for 4320-U-183: 140-1784-04-03-00, M55155/32-6, MIL-T-55155/32 and 9 more. Substitute compatibility should be verified for your specific system.
Is 4320-U-183 still available?
4320-U-183 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