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21191-001 — PARTS KIT,SEAL REPLACEMENT,MECHA

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21191-001: PARTS KIT,SEAL REPLACEMENT,MECHA.

PARTS KIT,SEAL REPLACEMENT,MECHA. Key specifications include end_item_identification: VALVE DRTNL CONT 4WAY. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-425-4221, 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
21191-001
NSN: 4820-01-425-4221
NIINs: 014254221, 016171265
FSC: 4820 — Valves, Nonpowered
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
end_item_identificationVALVE DRTNL CONT 4WAY
NSN4820-01-425-4221
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21191-001 · 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
END ITEM IDENTIFICATIONVALVE DRTNL CONT 4WAY
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 21191-001?
21191-001 is a PARTS KIT,SEAL REPLACEMENT,MECHA.
What is the NSN for 21191-001?
21191-001 is cataloged in the U.S. Government catalog under NSN 4820-01-425-4221. 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.