The Valve,check, cataloged under National Stock Number 4820-01-659-8959, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-659-8959 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A216 GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A351 GRADE CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Valve Size | 10.00 INCHES IN |
| Maximum Operating Temp | 248.00 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 13.375 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Face to Face Distance | 5.75 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | RUBBER SYNTHETIC SEAT |
| 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 |
|---|---|
| 1000FE150CSVIRK | 3/9 Design control — primary reference Sure Flow Equipment Inc Div Sure Flow Equipmenrt Inc |
NSN 4820-01-659-8959 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-659-8959: Flow Control Device: DISK; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM A216 GRADE WCB ASSN STD SINGLE MATERIAL RESPONSE BODY; Material Document and Classification: ASTM A351 GRADE CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE. 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.