NSN 4820-01-265-5010 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-265-5010. Manufacturer of record part number: 8954-004-148.
The Disk,valve, cataloged under National Stock Number 4820-01-265-5010, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-265-5010
Primary Part Number
8954-004-148
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Velan Valve Corp.
Status
ACTIVE
Taper Minor Diameter
1.500 INCHES NOMINAL IN
Style Designator
SOLID WEDGE
Taper Major Diameter
2.381 INCHES NOMINAL IN
Seat Angle
45.0 DEGREES NOMINAL
Taper Length
3.438 INCHES NOMINAL IN
Material
STEEL
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 Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-383-51318264-028-031POSSIBLE MATCH
CAP,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-383-54269044-025-031POSSIBLE MATCH
FLANGE,GLAND,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-383-58239094-000-265POSSIBLE MATCH
GUIDE,VALVE STEM
Possible match (shared part number)Velan Valve Corp.
4820-01-439-76258340-15 PART F10-2054P-02MSPOSSIBLE MATCH
VALVE,GATE
Possible match (shared part number)Velan Valve Corp.
4820-01-464-26268954-004-031-SPOSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
3040-01-464-34939154-024-198POSSIBLE MATCH
LEVER,MANUAL CONTROL
Possible match (shared part number)Velan Valve Corp.
4820-01-540-4290B10-2054P-02TSGPOSSIBLE MATCH
VALVE,GATE
Possible match (shared part number)Velan Valve Corp.
NSN 4820-01-265-5010 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-265-5010?
NSN 4820-01-265-5010 has 2 manufacturer part numbers on file: 8954-004-148 (Velan Valve Corp.), 8340-15 ITEM 6D (Velan Valve Corp.).
What NSN replaces 4820-01-265-5010?
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-383-5131, 4820-01-383-5426, 4820-01-383-5823. Verify interchangeability with system specifications before substitution.
What are the specifications of 8954-004-148?
Key specifications for 8954-004-148: Overall Height: 3.840 INCHES NOMINAL IN; Taper Minor Diameter: 1.500 INCHES NOMINAL IN; Style Designator: SOLID WEDGE; Taper Major Diameter: 2.381 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-265-5010 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.