The Valve,expansion, cataloged under National Stock Number 4820-01-055-1283, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-055-1283 |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Valve Equalizer Location | INTERNAL |
| Temp Rating | 0.0 FAHRENHEIT DEGF |
| Temp Rating | 160.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE, MULTIPLE CONNECTION |
| First End Style Designator | SOCKET |
| Bulb Length | 3.060 INCHES NOMINAL IN |
| Bulb Diameter | 0.323 INCHES MINIMUM AND 0.339 INCHES MAXIMUM IN |
| Mounting Method | CLAMP BULB |
| Refrigeration Capacity in Btu Per Hour | 9.0 |
| End Connection Quantity | 2 |
| Capillary Tube Length | 60.000 INCHES NOMINAL IN |
| Second End Style Designator | SOCKET |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Bulb Media Type | REFRIGERANT 22 |
| First End Outside Diameter Tube Accommodated | 0.252 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Test Data Document | 97403-13214E3785 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Material | COPPER ALLOY BODY |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT 22 |
| Second End Connection Type | UNTHREADED INTERNAL TUBE |
| Second End Outside Diameter Tube Accommodated | 0.377 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| 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 |
|---|---|
| ADM2538 | 3/2 Design control — primary reference U.S. Government activity |
| 13214E3785-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| 13214E3785-1 | 5/2 Secondary reference U.S. Government activity |
| TCL GT-2538 3/4 CL | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
| TCL3/4CL-15A | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
NSN 4820-01-055-1283 is a Valve,expansion, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-055-1283: Valve Equalizer Location: INTERNAL; Temp Rating: 0.0 FAHRENHEIT DEGF; Temp Rating: 160.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL. 22 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.