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PartsTable / COMPONENT / 21321-850-1
21321-850-1 ✓ 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

The SLEEVE,SLIDE is a the manufacturer industrial component. Key specifications include special_features: MARKED WITH SN AT SAME END TO AVOID IMPROPER ASSEMBLY, end_item_identification: VALVE ASSEMBLY DECELERATION, part_name_assigned_by_controlling_agency: SLIDE/SLEEVE MATCHED SET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-706-0277, 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
21321-850-1
NSN: 4820-01-706-0277
FSC: 4820
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
special_featuresMARKED WITH SN AT SAME END TO AVOID IMPROPER ASSEMBLY
end_item_identificationVALVE ASSEMBLY DECELERATION
part_name_assigned_by_controlling_agencySLIDE/SLEEVE MATCHED SET
NSN4820-01-706-0277
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21321-850-1 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESMARKED WITH SN AT SAME END TO AVOID IMPROPER ASSEMBLY
PART NAME ASSIGNED BY CONTROLLING AGENCYSLIDE/SLEEVE MATCHED SET
END ITEM IDENTIFICATIONVALVE ASSEMBLY DECELERATION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
21321Interchangeable
interchangeable cross-reference
interchangeable
124-116-1Interchangeable
interchangeable cross-reference
interchangeable
124-0116-001Interchangeable
interchangeable cross-reference
interchangeable
3062Interchangeable
interchangeable cross-reference
interchangeable
A1619Interchangeable
interchangeable cross-reference
interchangeable
5737Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21321-850-1?
21321-850-1 is a SLEEVE,SLIDE.
What parts can replace 21321-850-1?
There are 19 known substitutes for 21321-850-1: 21321, 124-116-1, 124-0116-001 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21321-850-1?
21321-850-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-706-0277. 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