The Valve,check, cataloged under National Stock Number 4820-01-305-7830, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atlas Incinerators A/s. Government technical data includes 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-305-7830 |
| Primary Part Number | 2244-1,2INCH |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Atlas Incinerators A/s |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 4.750 INCHES ALL ENDS IN |
| Mounting Position | VERTICAL |
| Connection Type | FLANGE ALL ENDS |
| Nominal Outside Diameter | 6.000 INCHES ALL ENDS IN |
| Material | PLASTIC POLYVINYL CHLORIDE (PVC) FLOW CONTROL DEVICE |
| Material | ALUMINUM BODY |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.750 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 2244-1,2INCH | Atlas Incinerators A/s (DNK) |
| Reference | Meaning |
|---|---|
| 000991699-000 | 5/9 Secondary reference Waukesha Bearings Corporation |
| 2244-1,2INCH | 5/9 Secondary reference Young and Cunningham America Inc a Joint Venture |
| 000991699-000 | 3/9 Design control — primary reference Young and Cunningham America Inc a Joint Venture |
| 000991699-000-0 | C/1 Advisory reference — outside the item-of-supply concept Waukesha Bearings Corporation |
NSN 4820-01-305-7830 is a Valve,check, manufactured by Atlas Incinerators A/s, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-305-7830 has 1 manufacturer part number on file: 2244-1,2INCH (Atlas Incinerators A/s).
Key specifications for 2244-1,2INCH: Flow Control Device: BALL; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 4.750 INCHES ALL ENDS 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.