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Technical Data Sheet
PartsTable / COMPONENT / 4374-1/2IN
4374-1/2IN ✓ 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 4374-1/2IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-274-3634, 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
4374-1/2IN
NSN: 4820-00-274-3634
FSC: 4820
CAGE: 72423 — FLAGG STANLEY G & CO INC DBA FLAGG BRASS (USA)
SPECIFICATIONS
Part Number4374-1/2IN
NSN4820-00-274-3634
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4374-1/2IN · 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
•
MATERIAL: COPPER ALLOY OVERALL
•
FLOW STYLE: TWO WAY TWO PORT 360 DEGREE PLUG TURN
•
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND C STYLE
•
FURNISHED ITEMS AND QUANTITY: 1 WRENCH
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODMANUAL
MATERIALCOPPER ALLOY OVERALL
FLOW STYLETWO WAY TWO PORT 360 DEGREE PLUG TURN
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
NONDEFINITIVE SPEC/STD DATA2 TYPE AND C STYLE
FURNISHED ITEMS AND QUANTITY1 WRENCH
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
THREAD SERIES DESIGNATORNPT ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
04-649Interchangeable
interchangeable cross-reference
interchangeable
034-649Interchangeable
interchangeable cross-reference
interchangeable
173849H1Interchangeable
interchangeable cross-reference
interchangeable
25212Interchangeable
interchangeable cross-reference
interchangeable
24GE14Interchangeable
interchangeable cross-reference
interchangeable
53628Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4374-1/2IN?
4374-1/2IN is a 4374-1/2IN.
What parts can replace 4374-1/2IN?
There are 28 known substitutes for 4374-1/2IN: 04-649, 034-649, 173849H1 and 25 more. Substitute compatibility should be verified for your specific system.
Is 4374-1/2IN still available?
4374-1/2IN 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