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20-08459 — STEM,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

20-08459: STEM,VALVE.

The STEM,VALVE is a the manufacturer industrial component. Key specifications include reference_number_differentiating_characteristics: QUALITY CONTROLLED IN ACCORDANCE WITH NAVY LEVEL 1 ASSURANCE GUIDE. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-901-8201, 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
20-08459
NSN: 4820-00-901-8201
FSC: 4820 — Valves, Nonpowered
CAGE: 03670 — TYCO FIRE PRODUCTS LP (USA)
SPECIFICATIONS
reference_number_differentiating_characteristicsQUALITY CONTROLLED IN ACCORDANCE WITH NAVY LEVEL 1 ASSURANCE GUIDE
NSN4820-00-901-8201
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20-08459 · 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
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROLLED IN ACCORDANCE WITH NAVY LEVEL 1 ASSURANCE GUIDE
TECHNICAL CHARACTERISTICS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROLLED IN ACCORDANCE WITH NAVY LEVEL 1 ASSURANCE GUIDE
SUBSTITUTES & CROSS-REFERENCES 3
V8459Reference document
Same NSN cross-reference
Reference document — Secondary reference
20-08459L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
V8459L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 20-08459?
20-08459 is a STEM,VALVE.
What parts can replace 20-08459?
There are 3 known substitutes for 20-08459: V8459, 20-08459L1, V8459L1. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-08459?
20-08459 is cataloged in the U.S. Government catalog under NSN 4820-00-901-8201. 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.