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PartsTable / COMPONENT / 21108-850
21108-850 ✓ 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

SLEEVE AND SLIDE,DIRECTIONAL CON. Key specifications include slide_material: STEEL CORROSION RESISTING, sleeve_material: STEEL CORROSION RESISTING, end_item_identification: NAVY WEAPON SYSTEM CODE JG SEAWOLF CLASS SSN, valve_design_control_activity: 78062, valve_model_number_for_which_designed: P/N 21108-001. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-418-4297, 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
21108-850
NSN: 4820-01-418-4297
FSC: 4820
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
slide_materialSTEEL CORROSION RESISTING
sleeve_materialSTEEL CORROSION RESISTING
end_item_identificationNAVY WEAPON SYSTEM CODE JG SEAWOLF CLASS SSN
valve_design_control_activity78062
valve_model_number_for_which_designedP/N 21108-001
NSN4820-01-418-4297
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21108-850 · 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
•
SLEEVE MATERIAL: STEEL CORROSION RESISTING
•
VALVE DESIGN CONTROL ACTIVITY: 78062
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: P/N 21108-001
•
SLIDE MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
SLEEVE MATERIALSTEEL CORROSION RESISTING
VALVE DESIGN CONTROL ACTIVITY78062
VALVE MODEL NUMBER FOR WHICH DESIGNEDP/N 21108-001
END ITEM IDENTIFICATIONNAVY WEAPON SYSTEM CODE JG SEAWOLF CLASS SSN
SLIDE MATERIALSTEEL CORROSION RESISTING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
274K01MF575L1Interchangeable
interchangeable cross-reference
interchangeable
MF575Interchangeable
interchangeable cross-reference
interchangeable
211086Interchangeable
interchangeable cross-reference
interchangeable
207423Interchangeable
interchangeable cross-reference
interchangeable
21108Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21108-850?
21108-850 is a SLEEVE AND SLIDE,DIRECTIONAL CON.
What parts can replace 21108-850?
There are 5 known substitutes for 21108-850: 274K01MF575L1, MF575, 211086 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21108-850?
21108-850 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-418-4297. 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