NSN 4820-01-459-4938 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-459-4938. Manufacturer of record part number: 8545-006-014-S.
The Seat,valve, cataloged under National Stock Number 4820-01-459-4938, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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.
Catalog Facts
Item Name
Seat,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Velan Valve Corp. (CAGE 57574)
Technical Specifications
Parameter
Value
NSN
4820-01-459-4938
Primary Part Number
8545-006-014-S
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Velan Valve Corp.
Status
ACTIVE
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.
4820-01-459-50558665-000-062POSSIBLE MATCH
GLAND BUSHING
Possible match (shared part number)Velan Valve Corp.
4820-01-459-56858555-038-062POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-459-60068535-500-035-GSPOSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Velan Valve Corp.
4820-01-460-2704B14-0064C-11MS CDS-P4-46822G01POSSIBLE MATCH
VALVE,GATE
Possible match (shared part number)Velan Valve Corp.
4820-01-463-0154B10-0064C-11MS,P4-46822-G01POSSIBLE MATCH
VALVE,GATE
Possible match (shared part number)Velan Valve Corp.
4820-01-463-01588542-009-014-ASGPOSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Velan Valve Corp.
5310-01-467-574383309-52 PART NO. 88POSSIBLE MATCH
NUT,SLEEVE
Possible match (shared part number)Velan Valve Corp.
NSN 4820-01-459-4938 is a Seat,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-459-4938?
NSN 4820-01-459-4938 has 2 manufacturer part numbers on file: 83309-52 6IN ITEM 9 (Velan Valve Corp.), 8545-006-014-S (Velan Valve Corp.).
What NSN replaces 4820-01-459-4938?
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-459-5055, 4820-01-459-5685, 4820-01-459-6006. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-459-4938 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.