The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-197-3765, 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 Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-197-3765 |
| Primary Part Number | 22981-12-70 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
| Status | ACTIVE |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Strainer Type and Quantity | 1 FILTER |
| Design Type | STRAIGHT |
| Thread Series | UNF LOCATION NOT OTHERWISE SPECIFIED |
| End Connection Type | THREADED MALE TUBE LOCATION NOT OTHERWISE SPECIFIED |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Thread Size Designator | 1.062-12 LOCATION NOT OTHERWISE SPECIFIED |
| Thread Class | 3A LOCATION NOT OTHERWISE SPECIFIED A |
| Material | STEEL CORROSION RESISTING BODY |
| Material | NICKEL ALLOY FILTER |
| End Connection Similarity | IDENTICAL |
| 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 |
|---|---|
| V0-300-158-01 | Vericor Power Systems Llc (USA) |
| 22981-12-70 PRIMARY | Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA) |
| Reference | Meaning |
|---|---|
| 0-300-158-01 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 22981 | D/9 Drawing number reference only Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
NSN 4730-01-197-3765 is a Restrictor Unit,fluid Flow, manufactured by Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-197-3765 has 2 manufacturer part numbers on file: V0-300-158-01 (Vericor Power Systems Llc), 22981-12-70 (Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div).
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-197-3766, 5305-01-376-9619, 4210-01-593-5497. Verify interchangeability with system specifications before substitution.
Key specifications for 22981-12-70: Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Strainer Type and Quantity: 1 FILTER; Design Type: STRAIGHT; Thread Series: UNF LOCATION NOT OTHERWISE SPECIFIED. 11 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.