The Strainer,suction, cataloged under National Stock Number 4730-01-523-0296, 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 Flow Ezy Filters Inc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4730-01-523-0296 |
| Primary Part Number | 3-1/2-100-RV3 |
| Item Name | Strainer,suction |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Flow Ezy Filters Inc |
| Status | ACTIVE |
| Body Diameter | 3.281 INCHES NOMINAL IN |
| Mounting Hole Quantity | 1 |
| Body Overall Length | 3.500 INCHES NOMINAL IN |
| Mounting Facility Nominal Thread Size | 0.500 INCHES IN |
| Style Designator | SUMP TYPE |
| Features Provided | DIFFERENTIAL PRESSURE RELIEF VALVE |
| Filtering Element Quantity | 1 |
| Mounting Facility Thread Series Designator | NPT |
| Material | ALUMINUM ALLOY BODY |
| Material | STEEL CORROSION RESISTING FILTERING MEDIUM |
| Mounting Type | THREADED HOLE TOP |
| 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 |
|---|---|
| 3-1/2-100-RV3 PRIMARY | Flow Ezy Filters Inc (USA) |
| HI-721-1000 IT 79 | Hhe Services, Inc. (USA) |
| Reference | Meaning |
|---|---|
| HI-721-1000 | D/9 Drawing number reference only Paw Paw Industries Div of Vesuvius Crucible Co Inc |
| HI-721-1000 IT 79 | 5/1 Secondary reference Flow Ezy Filters Inc |
| 3-1/2IN-100-RV3 | 3/9 Design control — primary reference Flow Ezy Filters Inc |
NSN 4730-01-523-0296 is a Strainer,suction, manufactured by Flow Ezy Filters Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-523-0296 has 2 manufacturer part numbers on file: 3-1/2-100-RV3 (Flow Ezy Filters Inc), HI-721-1000 IT 79 (Hhe Services, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 6680-01-524-2894, 4820-01-528-8981. Verify interchangeability with system specifications before substitution.
Key specifications for 3-1/2-100-RV3: Body Diameter: 3.281 INCHES NOMINAL IN; Mounting Hole Quantity: 1; Body Overall Length: 3.500 INCHES NOMINAL IN; Mounting Facility Nominal Thread Size: 0.500 INCHES IN. 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.