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N56643 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

N56643: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 1.315 INCHES NOMINAL IN, shank_diameter: 0.370 INCHES NOMINAL IN, outside_diameter: 1.370 INCHES NOMINAL IN, style_designator: POPPET, under_flange_height: 0.145 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-044-9071, 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
N56643
NSN: 4820-01-044-9071
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL
overall_height1.315 INCHES NOMINAL IN
shank_diameter0.370 INCHES NOMINAL IN
outside_diameter1.370 INCHES NOMINAL IN
style_designatorPOPPET
under_flange_height0.145 INCHES NOMINAL IN
flange_seat_to_disk_end_height1.125 INCHES NOMINAL IN
NSN4820-01-044-9071
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N56643 · 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
•
SHANK DIAMETER: 0.370 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 1.125 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.370 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
UNDER FLANGE HEIGHT: 0.145 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.370 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT1.125 INCHES NOMINAL IN
OVERALL HEIGHT1.315 INCHES NOMINAL IN
OUTSIDE DIAMETER1.370 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
UNDER FLANGE HEIGHT0.145 INCHES NOMINAL IN
MATERIALSTEEL
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
56643Reference 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 N56643?
N56643 is a DISK,VALVE.
What parts can replace N56643?
There is 1 known substitute for N56643: 56643. Substitute compatibility should be verified for your specific system.
What is the NSN for N56643?
N56643 is cataloged in the U.S. Government catalog under NSN 4820-01-044-9071. 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.