NSN 4820-01-357-3590 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-357-3590. Manufacturer of record part number: NB2522E-0000 ITEM 32 3IN.
Pressure Rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Material: NICKEL ALLOY
1 manufacturer part number on file
Manufacturer of record: Hunt Valve Company, Inc.
Identification
NSN: 4820-01-357-3590
NIIN: 013573590
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: NB2522E-0000 ITEM 32 3IN
Manufacturer: Hunt Valve Company, Inc.
General Description
The Disk,valve, cataloged under National Stock Number 4820-01-357-3590, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hunt Valve Company, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-357-3590
Primary Part Number
NB2522E-0000 ITEM 32 3IN
Item Name
Disk,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Hunt Valve Company, Inc.
Status
ACTIVE
Pressure Rating
250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
Material
NICKEL ALLOY
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 Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 4820-01-357-3590 is a Disk,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-357-3590?
NSN 4820-01-357-3590 has 1 manufacturer part number on file: NB2522E-0000 ITEM 32 3IN (Hunt Valve Company, Inc.).
What NSN replaces 4820-01-357-3590?
9 possible matches (shared part number, not a government interchangeability claim): 4820-01-357-5637, 4820-01-357-9087, 4820-01-446-0477. Verify interchangeability with system specifications before substitution.
What are the specifications of NB2522E-0000 ITEM 32 3IN?
Key specifications for NB2522E-0000 ITEM 32 3IN: Pressure Rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Material: NICKEL ALLOY. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-357-3590 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.