The Valve,check, cataloged under National Stock Number 4820-00-628-0785, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Vickers S Y S Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-628-0785 |
| Primary Part Number | 222319 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Vickers S Y S Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| DT8P1-06-15-11 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| 222319 PRIMARY | Vickers S Y S Inc (CAN) |
| Reference | Meaning |
|---|---|
| DT8P1-06-15-11 | 5/9 Secondary reference Vickers S Y S Inc |
NSN 4820-00-628-0785 is a Valve,check, manufactured by Vickers S Y S Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-628-0785 has 2 manufacturer part numbers on file: DT8P1-06-15-11 (Eaton Aerospace, Llc Dba Jackson South), 222319 (Vickers S Y S Inc).
Key specifications for 222319: Flow Control Device: BALL; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 13 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.