PartsTable
Technical Data Sheet
MIL-C-1203 ✓ 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

SWITCH,RADIO FREQUENCY TRANSMISS. Key specifications include material: COPPER ALLOY OVERALL, flow_style: TWO WAY TWO PORT 90 DEGREE PLUG TURN, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN, OPTIONAL END (PIPE) ALL ENDS, thread_direction: RIGHT-HAND ALL ENDS, operating_pressure: 20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-026-8473, 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
MIL-C-1203
NSN: 4820-00-026-8473
FSC: 4820
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_styleTWO WAY TWO PORT 90 DEGREE PLUG TURN
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN, OPTIONAL END (PIPE) ALL ENDS
thread_directionRIGHT-HAND ALL ENDS
operating_pressure20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.375 INCHES ALL ENDS IN
valve_operation_methodMANUAL
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
thread_series_designatorNPT ALL ENDS
material_document_and_classificationQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4820-00-026-8473
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: MIL-C-1203 · 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
THREAD DIRECTION: RIGHT-HAND FIRST END
CONNECTION STYLE: BEADED (HOSE) SECOND END
THREAD SERIES DESIGNATOR: NPTF FIRST END
NOMINAL THREAD SIZE: 0.375 INCHES FIRST END IN
MATERIAL: COPPER ALLOY OVERALL
STYLE DESIGNATOR: ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND FIRST END
CONNECTION STYLEBEADED (HOSE) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
THREAD SERIES DESIGNATORNPTF FIRST END
NOMINAL THREAD SIZE0.375 INCHES FIRST END IN
MATERIALCOPPER ALLOY OVERALL
SPECIAL FEATURESSUPPORTS GRUMMAN A-10 AIRCRAFT
STYLE DESIGNATORANGLE
VALVE OPERATION METHODMANUAL
FLOW CONTROL DEVICEDISK OR STEM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 36
A-A-59440/4Interchangeable
interchangeable cross-reference
interchangeable
AA59440/4-019Interchangeable
interchangeable cross-reference
interchangeable
MS35785-6Interchangeable
interchangeable cross-reference
interchangeable
109Interchangeable
interchangeable cross-reference
interchangeable
2065-16Interchangeable
interchangeable cross-reference
interchangeable
CT1087Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-C-1203?
MIL-C-1203 is a SWITCH,RADIO FREQUENCY TRANSMISS.
What parts can replace MIL-C-1203?
There are 36 known substitutes for MIL-C-1203: A-A-59440/4, AA59440/4-019, MS35785-6 and 33 more. Substitute compatibility should be verified for your specific system.
Is MIL-C-1203 still available?
MIL-C-1203 is currently cancelled.
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