The Valve,stop-Check, cataloged under National Stock Number 4820-00-200-0835, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division. Government technical data includes 21 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-200-0835 |
| Primary Part Number | A868Y |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Renewable Seat Ring Type | THREADED |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU Y-PATTERN |
| Material Document and Classification | ASTM A182,GRADE F11 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A182,GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Maximum Operating Temp | 850.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | BOLTED |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | STEEL BODY |
| Material | COBALT ALLOY SEAT |
| Material | COBALT ALLOY FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| A868Y PRIMARY | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division (USA) |
| Reference | Meaning |
|---|---|
| A868Y | 3/9 Design control — primary reference Vogt Edward Valve Co a British Tire & Rubber Co |
| 868Y1 | 5/9 Secondary reference U.S. Government activity |
| 571-4810-1303374PCV6 | 5/9 Secondary reference U.S. Government activity |
| 466Y1 | 5/9 Secondary reference U.S. Government activity |
| AE3589PC466Y1 | 5/9 Secondary reference U.S. Government activity |
| 571-4810-1303374REVDPC6 | 5/9 Secondary reference U.S. Government activity |
| D475524 | 5/9 Secondary reference U.S. Government activity |
| 868Y | 5/9 Secondary reference U.S. Government activity |
| 3678-152PCV6 | 3/2 Design control — primary reference U.S. Government activity |
| 3678-152REVDPCV6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-200-0835 is a Valve,stop-Check, manufactured by Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-200-0835 has 1 manufacturer part number on file: A868Y (Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division).
Key specifications for A868Y: Flow Control Device: DISK; Renewable Seat Ring Type: THREADED; Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS. 21 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.