The Valve,expansion, cataloged under National Stock Number 4820-01-425-0356, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Wilshire Corp. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-425-0356 |
| Primary Part Number | 2597882 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Wilshire Corp |
| Status | ACTIVE |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE, MULTIPLE CONNECTION |
| First End Style Designator | PLAIN |
| Bulb Length | 3.000 INCHES NOMINAL IN |
| End Connection Quantity | 2 |
| Capillary Tube Length | 30.000 INCHES NOMINAL IN |
| Second End Style Designator | PLAIN |
| First End Connection Type | UNTHREADED EXTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.250 INCHES NOMINAL IN |
| Media for Which Designed | REFRIGERANT |
| Second End Connection Type | UNTHREADED EXTERNAL TUBE |
| Second End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-425-0356 is a Valve,expansion, manufactured by Wilshire Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-425-0356 has 2 manufacturer part numbers on file: 620068260 (Imi Cornelius Inc.), 2597882 (Wilshire Corp).
2 possible matches (shared part number, not a government interchangeability claim): 6515-01-567-8007, 5120-01-671-8328. Verify interchangeability with system specifications before substitution.
Key specifications for 2597882: Second End Relationship with First End: NOT IDENTICAL; Body Style: ANGLE, MULTIPLE CONNECTION; First End Style Designator: PLAIN; Bulb Length: 3.000 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.