The Valve,expansion, cataloged under National Stock Number 4820-01-138-2244, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-138-2244 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | ANY ACCEPTABLE |
| Second End Relationship with First End | NOT IDENTICAL |
| Third End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST OR SECOND END |
| Mounting Method | CLAMP BULB |
| Refrigeration Capacity in Btu Per Hour | 24.0 |
| Fourth End Connection Type | PLAIN FACE FLANGE |
| End Connection Quantity | 4 |
| Capillary Tube Length | 58.000 INCHES MINIMUM AND 62.000 INCHES MAXIMUM IN |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Third End Connection Type | UNTHREADED INTERNAL TUBE |
| Fourth End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST, SECOND OR THIRD END |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT 22 |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Connection Type | UNTHREADED INTERNAL TUBE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 13219E9496 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-138-2244 is a Valve,expansion, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-138-2244: Flow Control Device: ANY ACCEPTABLE; Second End Relationship with First End: NOT IDENTICAL; Third End Relationship with Preceding Ends: NOT IDENTICAL WITH FIRST OR SECOND END; Mounting Method: CLAMP BULB. 15 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.