The Valve,check, cataloged under National Stock Number 4820-01-121-9785, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Corporation Dba Flowserve Div Services Business Unit. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-121-9785 |
| Primary Part Number | 1D25291T7.11 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Corporation Dba Flowserve Div Services Business Unit |
| Status | ACTIVE |
| Material | STEEL BODY |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 1D25291T7.11 PRIMARY | Flowserve Corporation Dba Flowserve Div Services Business Unit (USA) |
| 1498L-198 PRIMARY | Schrader-Bridgeport International Inc Dba Schrader Automotive (USA) |
| Reference | Meaning |
|---|---|
| 1498E198 | 5/9 Secondary reference Schrader-Bridgeport International Inc Dba Schrader Automotive |
| 2530-31 | 5/9 Secondary reference Scovill Inc Schrader Bellows Div |
NSN 4820-01-121-9785 is a Valve,check, manufactured by Flowserve Corporation Dba Flowserve Div Services Business Unit, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-121-9785 has 2 manufacturer part numbers on file: 1D25291T7.11 (Flowserve Corporation Dba Flowserve Div Services Business Unit), 1498L-198 (Schrader-Bridgeport International Inc Dba Schrader Automotive).
Key specifications for 1D25291T7.11: Material: STEEL BODY; Valve Operation Method: AUTOMATIC. 2 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.