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PartsTable / COMPONENT / 21213-850-1
21213-850-1 ✓ 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

SLEEVE AND SLIDE,DIRECTIONAL CON. Key specifications include slide_material: STEEL, sleeve_material: STEEL, special_features: NITRIDING STEEL, MIL-S-6709; MATCHED SET, end_item_identification: SEAWOLF CLASS SSN, valve_design_control_activity: 78062. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-418-6451, 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
21213-850-1
NSN: 4820-01-418-6451
FSC: 4820
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
slide_materialSTEEL
sleeve_materialSTEEL
special_featuresNITRIDING STEEL, MIL-S-6709; MATCHED SET
end_item_identificationSEAWOLF CLASS SSN
valve_design_control_activity78062
NSN4820-01-418-6451
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21213-850-1 · 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
•
VALVE DESIGN CONTROL ACTIVITY: 78062
•
SLIDE MATERIAL: STEEL
•
SLEEVE MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
VALVE DESIGN CONTROL ACTIVITY78062
SPECIAL FEATURESNITRIDING STEEL, MIL-S-6709; MATCHED SET
SLIDE MATERIALSTEEL
SLEEVE MATERIALSTEEL
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
21213Interchangeable
interchangeable cross-reference
interchangeable
25580Interchangeable
interchangeable cross-reference
interchangeable
210008Interchangeable
interchangeable cross-reference
interchangeable
208BInterchangeable
interchangeable cross-reference
interchangeable
10097Interchangeable
interchangeable cross-reference
interchangeable
212135Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21213-850-1?
21213-850-1 is a SLEEVE AND SLIDE,DIRECTIONAL CON.
What parts can replace 21213-850-1?
There are 11 known substitutes for 21213-850-1: 21213, 25580, 210008 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21213-850-1?
21213-850-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-418-6451. 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