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PartsTable / COMPONENT / 21343-1001-1
21343-1001-1 ✓ 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 STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416, end_item_identification: SEAWOLF CLASS SSN, valve_type_for_which_designed: REGULATOR, valve_model_number_for_which_designed: 21343. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-419-1613, 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
21343-1001-1
NSN: 4820-01-419-1613
FSC: 4820
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL COMP 416
end_item_identificationSEAWOLF CLASS SSN
valve_type_for_which_designedREGULATOR
valve_model_number_for_which_designed21343
NSN4820-01-419-1613
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21343-1001-1 · 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
•
MATERIAL: STEEL COMP 416
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 21343
•
VALVE TYPE FOR WHICH DESIGNED: REGULATOR
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 416
VALVE MODEL NUMBER FOR WHICH DESIGNED21343
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
VALVE TYPE FOR WHICH DESIGNEDREGULATOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
MS19059-2422Interchangeable
interchangeable cross-reference
interchangeable
A9314Interchangeable
interchangeable cross-reference
interchangeable
H-28450 PIECE 1Interchangeable
interchangeable cross-reference
interchangeable
21343Interchangeable
interchangeable cross-reference
interchangeable
506.3750Interchangeable
interchangeable cross-reference
interchangeable
GGG-R-180Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21343-1001-1?
21343-1001-1 is a STEM,FLUID VALVE.
What parts can replace 21343-1001-1?
There are 16 known substitutes for 21343-1001-1: MS19059-2422, A9314, H-28450 PIECE 1 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21343-1001-1?
21343-1001-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-419-1613. 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