The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-089-4588, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-089-4588 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Width Across Flats | 0.688 INCHES NOMINAL IN |
| Strainer Type and Quantity | 1 SCREEN |
| End Connection Component Type and Size for Which Designed | 1/4 IN. OD TUBE IN |
| Design Type | STRAIGHT |
| End Connection Type | THREADED MALE, REGULAR FLARE LOCATION NOT OTHERWISE SPECIFIED |
| Material Document and Classification | QQ-S-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Material Document and Classification | QQ-S-763, CLASS 303 FED SPEC SINGLE MATERIAL RESPONSE SCREENING |
| Valve Size | 0.250 INCHES IN |
| Operating Temp Range | -300.0 TO 900.0 FAHRENHEIT DEGF |
| Unable to Decode | UNABLE TO DECODE |
| Material | STEEL COMP 303 BODY |
| Material | STEEL COMP 303 SCREENING |
| Orifice Diameter | 0.020 INCHES NOMINAL IN |
| End Connection Similarity | IDENTICAL |
| Angle Between Connections | 37.0 DEGREES NOMINAL LOCATION NOT OTHERWISE SPECIFIED |
| 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 |
|---|---|
| 332-2715-180 | 5/2 Secondary reference U.S. Government activity |
| VDLA4335500D | 5/9 Secondary reference U.S. Government activity |
| VDLA4336500D | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-089-4588 is a Restrictor Unit,fluid Flow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-089-4588: Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Width Across Flats: 0.688 INCHES NOMINAL IN; Strainer Type and Quantity: 1 SCREEN; End Connection Component Type and Size for Which Designed: 1/4 IN. OD TUBE IN. 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.