The Bypass Unloader, cataloged under National Stock Number 4730-01-254-7097, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Leroi International Inc Dba Compair Leroi. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Bypass Unloader |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Leroi International Inc Dba Compair Leroi (CAGE 1XBP3) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-254-7097 |
| Primary Part Number | 83561 |
| Item Name | Bypass Unloader |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Leroi International Inc Dba Compair Leroi |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 83561 PRIMARY | Leroi International Inc Dba Compair Leroi (USA) |
| Reference | Meaning |
|---|---|
| 45915-120PSI | 5/9 Secondary reference Compair Kellogg Div of Robertshaw Controls Co |
| 83561 | 3/9 Design control — primary reference Compair Kellogg Div of Robertshaw Controls Co |
NSN 4730-01-254-7097 is a Bypass Unloader, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-254-7097 has 1 manufacturer part number on file: 83561 (Leroi International Inc Dba Compair Leroi).
2 possible matches (shared part number, not a government interchangeability claim): 5975-01-460-8385, 5310-01-667-9125. Verify interchangeability with system specifications before substitution.
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.