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PartsTable / COMPONENT / 21198-851-1
21198-851-1 ✓ 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. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-446-7468, 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
21198-851-1
NSN: 4820-01-446-7468
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
NSN4820-01-446-7468
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21198-851-1 · 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
•
SLEEVE MATERIAL: STEEL
•
SLIDE MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
SLEEVE MATERIALSTEEL
SLIDE MATERIALSTEEL
SPECIAL FEATURESNITRIDING STEEL, MIL-S-6709; MATCHED SET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
17800-3 PC. 64Interchangeable
interchangeable cross-reference
interchangeable
21198Interchangeable
interchangeable cross-reference
interchangeable
3100B11Interchangeable
interchangeable cross-reference
interchangeable
650574-69Interchangeable
interchangeable cross-reference
interchangeable
506092Interchangeable
interchangeable cross-reference
interchangeable
6-25768-875Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21198-851-1?
21198-851-1 is a SLEEVE AND SLIDE,DIRECTIONAL CON.
What parts can replace 21198-851-1?
There are 18 known substitutes for 21198-851-1: 17800-3 PC. 64, 21198, 3100B11 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21198-851-1?
21198-851-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-446-7468. 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