The Valve,check, cataloged under National Stock Number 4820-01-124-0263, 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18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-124-0263 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Flange Face Design | PLAIN SECOND END |
| Mounting Position | HORIZONTAL |
| Connection Type | FLANGE SECOND END |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.250 INCHES FIRST END IN |
| Bolt Hole Nominal Diameter | 0.250 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.812 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.656 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Bolt Hole Quantity | 4 FIRST END |
| Face to Face Distance | 4.750 INCHES IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.812 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.656 INCHES FIRST END IN |
| 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 |
| Reference | Meaning |
|---|---|
| 2760113-107 | 3/2 Design control — primary reference U.S. Government activity |
| 2760113 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-124-0263 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-148-2723. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-124-0263: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Flange Face Design: PLAIN SECOND END. 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.