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21220-850-1 — SLEEVE AND SLIDE,DIRECTIONAL CON

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21220-850-1: SLEEVE AND SLIDE,DIRECTIONAL CON.

SLEEVE AND SLIDE,DIRECTIONAL CON. Key specifications include slide_material: STEEL, sleeve_material: STEEL, special_features: MATCHED SET;MATL PER MIL-S-6709;SET IS MARKED W/SERIAL NO.AT SAME END TO AVOID IMPROPER ASSY., end_item_identification: SUBMARINE;OHIO CLASS SSN (TRIDENT), valve_design_control_activity: 78062, valve_model_number_for_which_designed: 21220. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-442-1773, 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
21220-850-1
NSN: 4820-01-442-1773
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_featuresMATCHED SET;MATL PER MIL-S-6709;SET IS MARKED W/SERIAL NO.AT SAME END TO AVOID IMPROPER ASSY.
end_item_identificationSUBMARINE;OHIO CLASS SSN (TRIDENT)
valve_design_control_activity78062
valve_model_number_for_which_designed21220
NSN4820-01-442-1773
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21220-850-1 · 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 MODEL NUMBER FOR WHICH DESIGNED: 21220
•
SLIDE MATERIAL: STEEL
•
SLEEVE MATERIAL: STEEL
•
VALVE DESIGN CONTROL ACTIVITY: 78062
TECHNICAL CHARACTERISTICS
VALVE MODEL NUMBER FOR WHICH DESIGNED21220
SLIDE MATERIALSTEEL
SPECIAL FEATURESMATCHED SET;MATL PER MIL-S-6709;SET IS MARKED W/SERIAL NO.AT SAME END TO AVOID IMPROPER ASSY.
SLEEVE MATERIALSTEEL
VALVE DESIGN CONTROL ACTIVITY78062
END ITEM IDENTIFICATIONSUBMARINE;OHIO CLASS SSN (TRIDENT)
SUBSTITUTES & CROSS-REFERENCES 3
21220-850Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
21220Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
21220 FIND 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 21220-850-1?
21220-850-1 is a SLEEVE AND SLIDE,DIRECTIONAL CON.
What parts can replace 21220-850-1?
There are 3 known substitutes for 21220-850-1: 21220-850, 21220, 21220 FIND 2. Substitute compatibility should be verified for your specific system.
What is the NSN for 21220-850-1?
21220-850-1 is cataloged in the U.S. Government catalog under NSN 4820-01-442-1773. 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.