NSN 4820-01-424-2601 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-424-2601. Manufacturer of record part number: EY-3069U PC-10.
The Piston,valve, cataloged under National Stock Number 4820-01-424-2601, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nihon Seiki Co. Ltd. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-424-2601
Primary Part Number
EY-3069U PC-10
Item Name
Piston,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Nihon Seiki Co. Ltd
Status
ACTIVE
Valve Design Control Activity
S4054
Material
PLASTIC
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-424-2603EY-3069U PC-13POSSIBLE MATCH
CYLINDER,ACTUATING,LINEAR
Possible match (shared part number)Nihon Seiki Co. Ltd
3040-01-424-2604POSSIBLE MATCH
CONNECTING LINK,RIGID
Possible match (shared part number)
4730-01-424-3135POSSIBLE MATCH
CASE,SHELL TOP
Possible match (shared part number)
3040-01-424-4684POSSIBLE MATCH
PIVOT SHAFT ASSEMBLY
Possible match (shared part number)
4730-01-424-5410POSSIBLE MATCH
NUT,TUBE COUPLING
Possible match (shared part number)
4820-01-424-5411POSSIBLE MATCH
VALVE-HAND,BYPASS
Possible match (shared part number)
4820-01-425-1918POSSIBLE MATCH
RETAINER,SEAT,VALVE
Possible match (shared part number)
4820-01-436-2118EY-3069U PC-1POSSIBLE MATCH
FLOAT,VALVE
Possible match (shared part number)Nihon Seiki Co. Ltd
NSN 4820-01-424-2601 is a Piston,valve, manufactured by Nihon Seiki Co. Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-424-2601?
NSN 4820-01-424-2601 has 1 manufacturer part number on file: EY-3069U PC-10 (Nihon Seiki Co. Ltd).
What NSN replaces 4820-01-424-2601?
8 possible matches (shared part number, not a government interchangeability claim): 3040-01-424-2603, 3040-01-424-2604, 4730-01-424-3135. Verify interchangeability with system specifications before substitution.
What are the specifications of EY-3069U PC-10?
Key specifications for EY-3069U PC-10: Valve Design Control Activity: S4054; End Item Identification: NIHON SEIKI TRIP-L-TRAP;STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: PLASTIC. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-424-2601 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.