The Valve,expansion, cataloged under National Stock Number 4820-01-101-1743, 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 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-101-1743 |
| Primary Part Number | TCLEFB3HW90(0.040 BLEED) |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Electric Co Alco Controls Div |
| Status | ACTIVE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| 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 |
|---|---|
| TCLEFB3HW90(0.040 BLEED) PRIMARY | Emerson Electric Co Alco Controls Div (USA) |
| Reference | Meaning |
|---|---|
| 54391 | 5/9 Secondary reference U.S. Government activity |
| 54391 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 54391 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-101-1743 is a Valve,expansion, manufactured by Emerson Electric Co Alco Controls Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-101-1743 has 1 manufacturer part number on file: TCLEFB3HW90(0.040 BLEED) (Emerson Electric Co Alco Controls Div).
3 possible matches (shared part number, not a government interchangeability claim): 5985-01-254-2190, 1560-01-559-0980, 5136-01-728-9776. Verify interchangeability with system specifications before substitution.
Key specifications for TCLEFB3HW90(0.040 BLEED): Unable to Decode: UNABLE TO DECODE; Unable to Decode: UNABLE TO DECODE; Unable to Decode: UNABLE TO DECODE; Unable to Decode: UNABLE TO DECODE. 24 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.