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PartsTable / COMPONENT / 50.109-BN
50.109-BN ✓ 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 50.109-BN 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 4820-00-797-3959, 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
50.109-BN
NSN: 4820-00-797-3959
FSC: 4820
CAGE: 72429 — MISSION SYSTEMS DAVENPORT INC. (USA)
SPECIFICATIONS
Part Number50.109-BN
NSN4820-00-797-3959
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 50.109-BN · 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
•
STYLE DESIGNATOR: STRAIGHT THRU
•
THREAD CLASS: 3A FIRST END A
•
DISK LOADING METHOD: SPRING
•
THREAD DIRECTION: RIGHT-HAND FIRST END
•
SEAT ANGLE: 24.0 DEGREES FIRST END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSTRAIGHT THRU
THREAD CLASS3A FIRST END A
DISK LOADING METHODSPRING
THREAD DIRECTIONRIGHT-HAND FIRST END
SEAT ANGLE24.0 DEGREES FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
VALVE OPERATION METHODAUTOMATIC
MOUNTING POSITIONHORIZONTAL OR VERTICAL
FLOW CONTROL DEVICEPOPPET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
A-A-51152Interchangeable
interchangeable cross-reference
interchangeable
33.450 ROUGH (SPECIAL)Interchangeable
interchangeable cross-reference
interchangeable
112270RInterchangeable
interchangeable cross-reference
interchangeable
50109Interchangeable
interchangeable cross-reference
interchangeable
212W350Interchangeable
interchangeable cross-reference
interchangeable
2273Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50.109-BN?
50.109-BN is a 50.109-BN.
What parts can replace 50.109-BN?
There are 21 known substitutes for 50.109-BN: A-A-51152, 33.450 ROUGH (SPECIAL), 112270R and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 50.109-BN?
50.109-BN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-797-3959. 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