The Valve,expansion, cataloged under National Stock Number 4820-00-304-9524, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-304-9524 |
| Primary Part Number | TCL200FW1BC500-6-6SH |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Flow Control Device | DISK, TOP GUIDED |
| Valve Equalizer Location | EXTERNAL |
| 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 | PLAIN |
| Valve Equalizer Connection Diameter | 0.625 INCHES NOMINAL IN |
| End Connection Quantity | 1 |
| Second End Style Designator | PLAIN |
| First End Connection Type | UNTHREADED EXTERNAL TUBE |
| Valve Evaporator Temp Range Designation | LOW |
| First End Outside Diameter Tube Accommodated | 0.625 INCHES NOMINAL IN |
| Valve Expansion Control Type | THERMOSTATIC |
| Valve Equalizer Connection Type | SOLDER TUBE |
| Valve Pressure Limiting Device | NOT INCLUDED |
| Second End Connection Type | UNTHREADED EXTERNAL TUBE |
| Second End Outside Diameter Tube Accommodated | 0.500 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 |
|---|---|
| TCL200FW1BC500-6-6SH PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| TCLE2FW1/2X5/8SAEANG5FTSAEEE6ASH PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| Reference | Meaning |
|---|---|
| TCL200FZ1BC500-6-6SH | 5/9 Secondary reference Emerson Electric Co Alco Controls Div |
NSN 4820-00-304-9524 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-304-9524 has 2 manufacturer part numbers on file: TCL200FW1BC500-6-6SH (Emerson Electric Co Alco Controls Div), TCLE2FW1/2X5/8SAEANG5FTSAEEE6ASH (Emerson Electric Co Alco Controls Div).
Key specifications for TCL200FW1BC500-6-6SH: Flow Control Device: DISK, TOP GUIDED; Valve Equalizer Location: EXTERNAL; Second End Relationship with First End: NOT IDENTICAL; Body Style: ANGLE GIVE "ADQM" OR "ADQN" IF FLANGED ONE OR TWO ENDS. 16 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.