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PartsTable / COMPONENT / M81940/1-1
M81940/1-1 ✓ 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 M81940/1-1 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-087-2221, 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
M81940/1-1
NSN: 4820-01-087-2221
FSC: 4820
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM81940/1-1
NSN4820-01-087-2221
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: M81940/1-1 · 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
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
MAXIMUM OPERATING TEMP: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
THREAD CLASS: 3A ALL ENDS A
•
NOMINAL THREAD SIZE: 0.312 INCHES SECOND END IN
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE DEGF
THREAD CLASS3A ALL ENDS A
NOMINAL THREAD SIZE0.312 INCHES SECOND END IN
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEFLARELESS (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
VALVE OPERATION METHODMANUAL
FLOW CONTROL DEVICEPOPPET
STYLE DESIGNATORANGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
M010NInterchangeable
interchangeable cross-reference
interchangeable
P14500Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-81940/1BInterchangeable
interchangeable cross-reference
interchangeable
P15-500Interchangeable
interchangeable cross-reference
interchangeable
M81940/1-2Interchangeable
interchangeable cross-reference
interchangeable
6532C309Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M81940/1-1?
M81940/1-1 is a M81940/1-1.
What parts can replace M81940/1-1?
There are 10 known substitutes for M81940/1-1: M010N, P14500, MIL-V-81940/1B and 7 more. Substitute compatibility should be verified for your specific system.
Is M81940/1-1 still available?
M81940/1-1 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