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Technical Data Sheet
PartsTable / COMPONENT / 5-8431 1/2
5-8431 1/2 ✓ 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 5-8431 1/2 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 4820-00-896-5978, 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
5-8431 1/2
NSN: 4820-00-896-5978
FSC: 4820
CAGE: 63220 — FLOWSERVE INC (USA)
SPECIFICATIONS
Part Number5-8431 1/2
NSN4820-00-896-5978
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 5-8431 1/2 · 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 SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) ALL ENDS
•
BONNET TYPE: INSIDE SCREW
•
MAXIMUM OPERATING TEMP: 450.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
BONNET ATTACHMENT METHOD: UNION
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
VALVE OPERATION METHOD: MANUAL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) ALL ENDS
BONNET TYPEINSIDE SCREW
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT SINGLE RESPONSE DEGF
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
BONNET ATTACHMENT METHODUNION
THREAD DIRECTIONRIGHT-HAND ALL ENDS
VALVE OPERATION METHODMANUAL
FEATURES PROVIDEDBONNET PACKING
FLOW CONTROL DEVICENEEDLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
SWE8433DInterchangeable
interchangeable cross-reference
interchangeable
8433Interchangeable
interchangeable cross-reference
interchangeable
SWE8433Interchangeable
interchangeable cross-reference
interchangeable
B107.10 TY1CL4Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-641Interchangeable
interchangeable cross-reference
interchangeable
B107.110Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5-8431 1/2?
5-8431 1/2 is a 5-8431 1/2.
What parts can replace 5-8431 1/2?
There are 18 known substitutes for 5-8431 1/2: SWE8433D, 8433, SWE8433 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5-8431 1/2?
5-8431 1/2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-896-5978. 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