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PartsTable / COMPONENT / 21126142
21126142 ✓ 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 GUIDE,VALVE STEM is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, bore_countersink: INCLUDED, style_designator: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-278-8040, 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
21126142
NSN: 4820-01-278-8040
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
bore_countersinkINCLUDED
style_designatorPLAIN
NSN4820-01-278-8040
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21126142 · 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
•
MATERIAL: COPPER ALLOY
•
STYLE DESIGNATOR: PLAIN
•
BORE COUNTERSINK: INCLUDED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY
STYLE DESIGNATORPLAIN
BORE COUNTERSINKINCLUDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
C3431Interchangeable
interchangeable cross-reference
interchangeable
C005-0125Interchangeable
interchangeable cross-reference
interchangeable
60428Interchangeable
interchangeable cross-reference
interchangeable
47619 ITEM 5Interchangeable
interchangeable cross-reference
interchangeable
47619Interchangeable
interchangeable cross-reference
interchangeable
C-3431 ITEM 29Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21126142?
21126142 is a GUIDE,VALVE STEM.
What parts can replace 21126142?
There are 6 known substitutes for 21126142: C3431, C005-0125, 60428 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21126142?
21126142 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-278-8040. 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