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21201-850-1 — SLEEVE AND SLIDE,DIRECTIONAL CON

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21201-850-1: SLEEVE AND SLIDE,DIRECTIONAL CON.

SLEEVE AND SLIDE,DIRECTIONAL CON. Key specifications include slide_material: STEEL, sleeve_material: STEEL, special_features: NITRIDING STEEL, MIL-S-6709; MATCHED SET; FOR VALVE ASSEMBLY SZ 2, end_item_identification: JG SEAWOLF CLASS SSN, valve_design_control_activity: 78062. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-417-9403, 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
21201-850-1
NSN: 4820-01-417-9403
FSC: 4820 — Valves, Nonpowered
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; FOR VALVE ASSEMBLY SZ 2
end_item_identificationJG SEAWOLF CLASS SSN
valve_design_control_activity78062
NSN4820-01-417-9403
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21201-850-1 · 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
•
SLIDE MATERIAL: STEEL
•
SLEEVE MATERIAL: STEEL
•
VALVE DESIGN CONTROL ACTIVITY: 78062
TECHNICAL CHARACTERISTICS
SLIDE MATERIALSTEEL
SPECIAL FEATURESNITRIDING STEEL, MIL-S-6709; MATCHED SET; FOR VALVE ASSEMBLY SZ 2
SLEEVE MATERIALSTEEL
VALVE DESIGN CONTROL ACTIVITY78062
END ITEM IDENTIFICATIONJG SEAWOLF CLASS SSN
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
21201-FIND NO-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21201-850-1?
21201-850-1 is a SLEEVE AND SLIDE,DIRECTIONAL CON.
What parts can replace 21201-850-1?
There is 1 known substitute for 21201-850-1: 21201-FIND NO-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 21201-850-1?
21201-850-1 is cataloged in the U.S. Government catalog under NSN 4820-01-417-9403. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.