The Valve,check, cataloged under National Stock Number 4820-01-009-7785, 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 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-009-7785 |
| Primary Part Number | 123664-1-1 |
| 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 FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE FIRST END |
| Operating Pressure | 10.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 8.800 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.063 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 |
|---|---|
| 123664-1-1 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| 123664-1-1 | Aero International, Llc Dba Ams Engineered Solutions (USA) |
| Reference | Meaning |
|---|---|
| 123664-1-1 | 5/9 Secondary reference U.S. Government activity |
| 204-13028-8 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-009-7785 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 4820-01-009-7785 has 2 manufacturer part numbers on file: 123664-1-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 123664-1-1 (Aero International, Llc Dba Ams Engineered Solutions).
Key specifications for 123664-1-1: Flow Control Device: DISK; Flange Shape: ROUND FIRST END; Flange Face Design: PLAIN FIRST END; Mounting Position: HORIZONTAL OR VERTICAL. 12 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.