The Valve,expansion, cataloged under National Stock Number 4820-01-224-1814, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Electric Co Alco Controls Div. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-224-1814 |
| Primary Part Number | TCLN2HW-5/8X7/8 0DF |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Flow Control Device | CAGE |
| Valve Equalizer Location | INTERNAL |
| Temp Rating | 300.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS |
| First End Style Designator | SOCKET |
| End Connection Quantity | 2 |
| Second End Style Designator | SOCKET |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| Valve Evaporator Temp Range Designation | HIGH |
| First End Outside Diameter Tube Accommodated | 0.875 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEAT |
| Valve Expansion Control Type | THERMOSTATIC |
| Media for Which Designed | REFRIGERANT 22 |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Connection Type | UNTHREADED INTERNAL TUBE |
| Second End Outside Diameter Tube Accommodated | 0.625 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 |
| Part Number | Manufacturer |
|---|---|
| TCLN2HW-5/8X7/8 0DF PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| Reference | Meaning |
|---|---|
| TCLN2HW-5/8X7/8 | C/1 Advisory reference — outside the item-of-supply concept Emerson Electric Co Alco Controls Div |
| F23046PIECE TCLN2HW-5/8X7/80DF | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
NSN 4820-01-224-1814 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-224-1814 has 1 manufacturer part number on file: TCLN2HW-5/8X7/8 0DF (Emerson Electric Co Alco Controls Div).
Key specifications for TCLN2HW-5/8X7/8 0DF: Flow Control Device: CAGE; Valve Equalizer Location: INTERNAL; Temp Rating: 300.0 FAHRENHEIT DEGF; Second End Relationship with First End: NOT IDENTICAL. 19 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.