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858256 — PANEL,BALANCE,AIRCRAFT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

858256: PANEL,BALANCE,AIRCRAFT.

The PANEL,BALANCE,AIRCRAFT is a the manufacturer industrial component. Key specifications include style_designator: STRAIGHT THRU, mounting_position: VERTICAL, valve_operation_method: AUTOMATIC, end_item_identification: VOLVO PENTA ENGINE MODEL TMD41B, TAMD41B, D41B, AND AD41B. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-413-0479, 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
858256
NSN: 4820-01-413-0479
NIINs: 014130479, 017176354
FSC: 4820 — Valves, Nonpowered
CAGE: AD56N — AKTIEBOLAGET VOLVO PENTA (SWE)
SPECIFICATIONS
style_designatorSTRAIGHT THRU
mounting_positionVERTICAL
valve_operation_methodAUTOMATIC
end_item_identificationVOLVO PENTA ENGINE MODEL TMD41B, TAMD41B, D41B, AND AD41B
NSN4820-01-413-0479
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 858256 · 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
•
MOUNTING POSITION: VERTICAL
•
STYLE DESIGNATOR: STRAIGHT THRU
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
MOUNTING POSITIONVERTICAL
STYLE DESIGNATORSTRAIGHT THRU
END ITEM IDENTIFICATIONVOLVO PENTA ENGINE MODEL TMD41B, TAMD41B, D41B, AND AD41B
VALVE OPERATION METHODAUTOMATIC
SUBSTITUTES & CROSS-REFERENCES 1
858256-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 858256?
858256 is a PANEL,BALANCE,AIRCRAFT.
What parts can replace 858256?
There is 1 known substitute for 858256: 858256-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 858256?
858256 is cataloged in the U.S. Government catalog under NSN 4820-01-413-0479. 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.