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Technical Data Sheet
PartsTable / COMPONENT / MIL-V-81940/1B
MIL-V-81940/1B ✓ 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 MIL-V-81940/1B is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-104-5169, 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-V-81940/1B
NSN: 4820-01-104-5169
FSC: 4820
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-V-81940/1B
NSN4820-01-104-5169
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: MIL-V-81940/1B · 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 OPERATION METHOD: MANUAL
•
FLOW CONTROL DEVICE: POPPET
•
CONNECTION STYLE: PLAIN (TUBE) SECOND END
•
MAXIMUM OPERATING TEMP: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
NOMINAL THREAD SIZE: 0.312 INCHES SECOND END IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT (UNJ) FIRST END
•
MATERIAL: ALUMINUM ALLOY BODY
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODMANUAL
FLOW CONTROL DEVICEPOPPET
CONNECTION STYLEPLAIN (TUBE) SECOND END
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE DEGF
NOMINAL THREAD SIZE0.312 INCHES SECOND END IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) FIRST END
MATERIALALUMINUM ALLOY BODY
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
SEAT ANGLE37.0 DEGREES FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
P1-5-500Interchangeable
interchangeable cross-reference
interchangeable
P14-500 1-4INInterchangeable
interchangeable cross-reference
interchangeable
P14-500Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-81940/1Interchangeable
interchangeable cross-reference
interchangeable
FD15-1000-04Interchangeable
interchangeable cross-reference
interchangeable
M81940/2-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-V-81940/1B?
MIL-V-81940/1B is a MIL-V-81940/1B.
What parts can replace MIL-V-81940/1B?
There are 14 known substitutes for MIL-V-81940/1B: P1-5-500, P14-500 1-4IN, P14-500 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-V-81940/1B?
MIL-V-81940/1B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-104-5169. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026