The Valve,stop-Check, cataloged under National Stock Number 4820-01-128-9045, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-128-9045 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | PISTON |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Nominal Length | 2.760 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU |
| Bolt Hole Nominal Diameter | 0.280 INCHES FIRST END IN |
| Bonnet Type | INSIDE SPRING |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.360 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 4 FIRST END |
| Bonnet Attachment Method | BOLTED |
| Nominal Width | 2.125 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.000 INCHES FIRST END IN |
| Material | ALUMINUM ALLOY OVERALL |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.199 INCHES FIRST END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2760012 | D/9 Drawing number reference only U.S. Government activity |
| 10124594 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 2760012-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-128-9045 is a Valve,stop-Check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-128-9045: Flow Control Device: PISTON; Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Nominal Length: 2.760 INCHES FIRST END IN. 18 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.