The Valve,check, cataloged under National Stock Number 4820-00-889-6249, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-889-6249 |
| Primary Part Number | 123572-1-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND SECOND END |
| Flange Shape | ROUND FIRST END |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Flange Face Design | RECESSED STRAIGHT FIRST END |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE SECOND END |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 3.625 INCHES IN |
| Nominal Outside Diameter | 4.500 INCHES SECOND END IN |
| Nominal Outside Diameter | 4.500 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Face to Face Distance | 0.438 INCHES IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Raised Face Nominal Diameter | 4.354 INCHES SECOND END IN |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 0.188 INCHES SECOND END IN |
| Nominal Thickness | 0.160 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 |
| Part Number | Manufacturer |
|---|---|
| 123572-1-1 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 123572-1-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-889-6249 is a Valve,check, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-889-6249 has 1 manufacturer part number on file: 123572-1-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-239-1973. Verify interchangeability with system specifications before substitution.
Key specifications for 123572-1-1: Flow Control Device: DISK; Flange Shape: ROUND SECOND END; Flange Shape: ROUND FIRST END; Flange Face Design: RAISED STRAIGHT SECOND END. 19 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.