The Filter,fluid, cataloged under National Stock Number 4330-01-439-0482, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Balston Inc Div of Whatman Inc. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-439-0482 |
| Primary Part Number | 2312N-1B1-BX |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Balston Inc Div of Whatman Inc |
| Status | ACTIVE |
| Filtration Rating in Microns | 0.01 NOMINAL |
| First Intake Nominal Thread Size | 1.500 INCHES IN |
| Drop Pressure | ERR-060 |
| First Intake Thread Series Designator | NPT |
| Design Type | REUSABLE |
| Body Outside Diameter | 5.000 INCHES NOMINAL IN |
| Temp Rating | 130.0 FAHRENHEIT NOMINAL DEGF |
| First Intake Thread Direction | RIGHT-HAND |
| Body Height | 16.840 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED INTERNAL PIPE HEAD SIDE |
| Style Designator | THREADED SHELL (MASON JAR) |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Features Provided | DIFFERENTIAL PRESSURE INDICATOR |
| Filtering Element Quantity | 1 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Differential Pressure | ERR-060 |
| Media for Which Designed | AIR AND GAS |
| Material | RUBBER BUNA N SEAL |
| Material | GLASS FIBER FILTERING MEDIUM |
| Material | STEEL CONTAINER/CARTRIDGE |
| Material | ALUMINUM BODY |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION HEAD SIDE |
| 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 |
|---|---|
| 2312N-1B1-BX PRIMARY | Balston Inc Div of Whatman Inc (USA) |
| Reference | Meaning |
|---|---|
| A960-BX | 5/9 Secondary reference Balston Inc Div of Whatman Inc |
NSN 4330-01-439-0482 is a Filter,fluid, manufactured by Balston Inc Div of Whatman Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-439-0482 has 1 manufacturer part number on file: 2312N-1B1-BX (Balston Inc Div of Whatman Inc).
Key specifications for 2312N-1B1-BX: Filtration Rating in Microns: 0.01 NOMINAL; First Intake Nominal Thread Size: 1.500 INCHES IN; Drop Pressure: ERR-060; First Intake Thread Series Designator: NPT. 23 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.