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21C1659 — VALVE,POPPET,TEST SLAVE ASSEMBLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21C1659: VALVE,POPPET,TEST SLAVE ASSEMBLY.

VALVE,POPPET,TEST SLAVE ASSEMBLY. Key specifications include general_characteristics_item_description: ANODIZED MIL-A-8625 TYPE 1 CLASS 2 COLOR RED. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-263-4236, 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
21C1659
NSN: 4820-00-263-4236
FSC: 4820 — Valves, Nonpowered
CAGE: 99207 — GENERAL ELECTRIC COMPANY DBA GE AEROSPACE (USA)
SPECIFICATIONS
general_characteristics_item_descriptionANODIZED MIL-A-8625 TYPE 1 CLASS 2 COLOR RED
NSN4820-00-263-4236
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21C1659 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ANODIZED MIL-A-8625 TYPE 1 CLASS 2 COLOR RED
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONANODIZED MIL-A-8625 TYPE 1 CLASS 2 COLOR RED
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 1
21C1659G01Reference 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 21C1659?
21C1659 is a VALVE,POPPET,TEST SLAVE ASSEMBLY.
What parts can replace 21C1659?
There is 1 known substitute for 21C1659: 21C1659G01. Substitute compatibility should be verified for your specific system.
What is the NSN for 21C1659?
21C1659 is cataloged in the U.S. Government catalog under NSN 4820-00-263-4236. 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.