The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-312-5647, 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 Circor Naval Solutions Llc Dba Warren Pumps. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Circor Naval Solutions Llc Dba Warren Pumps (CAGE 63857) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-312-5647 |
| Primary Part Number | 821E0021R008A |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| 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 |
|---|---|
| 821E0021R008A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 0821E0021R008A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| 821E0021SS | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| LM630 PC 16 | C/1 Advisory reference — outside the item-of-supply concept Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4730-01-312-5647 is a Restrictor,fluid Flow, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-312-5647 has 2 manufacturer part numbers on file: 821E0021R008A (Circor Naval Solutions Llc Dba Warren Pumps), 0821E0021R008A (Circor Naval Solutions Llc Dba Warren Pumps).
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.