21129-850-1 — SLEEVE AND SLIDE,DIRECTIONAL CON

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

21129-850-1: SLEEVE AND SLIDE,DIRECTIONAL CON.

SLEEVE AND SLIDE,DIRECTIONAL CON. Key specifications include slide_material: STEEL, sleeve_material: STEEL, special_features: NITRIDING STEEL PER MIL-S-6709; SLIDE/SLEEVE SET IS MARKED SAME END TO AVOID IMPROPER ASSEMBLY, end_item_identification: NAVY WEAPON SYSTEM CODE JG, SEAWOLF CLASS SSN, valve_design_control_activity: 78062, valve_model_number_for_which_designed: 21129-001. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-419-1683, 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

21129-850-1

NSN: 4820-01-419-1683
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)

SPECIFICATIONS

slide_material	STEEL
sleeve_material	STEEL
special_features	NITRIDING STEEL PER MIL-S-6709; SLIDE/SLEEVE SET IS MARKED SAME END TO AVOID IMPROPER ASSEMBLY
end_item_identification	NAVY WEAPON SYSTEM CODE JG, SEAWOLF CLASS SSN
valve_design_control_activity	78062
valve_model_number_for_which_designed	21129-001
NSN	4820-01-419-1683

COMPONENT DIAGRAM

KEY FEATURES

•

VALVE MODEL NUMBER FOR WHICH DESIGNED: 21129-001

•

SLIDE MATERIAL: STEEL

•

SLEEVE MATERIAL: STEEL

•

VALVE DESIGN CONTROL ACTIVITY: 78062

TECHNICAL CHARACTERISTICS

VALVE MODEL NUMBER FOR WHICH DESIGNED	21129-001
SLIDE MATERIAL	STEEL
SPECIAL FEATURES	NITRIDING STEEL PER MIL-S-6709; SLIDE/SLEEVE SET IS MARKED SAME END TO AVOID IMPROPER ASSEMBLY
SLEEVE MATERIAL	STEEL
VALVE DESIGN CONTROL ACTIVITY	78062
END ITEM IDENTIFICATION	NAVY WEAPON SYSTEM CODE JG, 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 2

21155 FIND 4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

21129 FIND 4Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 21129-850-1?

21129-850-1 is a SLEEVE AND SLIDE,DIRECTIONAL CON.

What parts can replace 21129-850-1?

There are 2 known substitutes for 21129-850-1: 21155 FIND 4, 21129 FIND 4. Substitute compatibility should be verified for your specific system.

What is the NSN for 21129-850-1?

21129-850-1 is cataloged in the U.S. Government catalog under NSN 4820-01-419-1683. This indicates validated use in U.S. government and defense supply chains.

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21129-850-1 — SLEEVE AND SLIDE,DIRECTIONAL CON

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