The Valve,check, cataloged under National Stock Number 4820-01-505-4233, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-505-4233 |
| Primary Part Number | SWS-718-09DOD |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Furnished Items and Quantity | 4 BOLT AND 1 GASKET |
| Renewable Seat Ring Type | WELDED |
| Nominal Pipe Size Accommodated | 2.411 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | A182 F316 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 1975.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 100.000 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | WEIGHT |
| Media for Which Designed | LIQUID SINGLE RESPONSE |
| Material | STEEL CORROSION RESISTING BODY |
| 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 |
|---|---|
| 59440A2 PN SWS-718-09 | Flowserve Inc (USA) |
| SWS-718-09DOD PRIMARY | Flowserve Inc (USA) |
| Reference | Meaning |
|---|---|
| 59440A2 | D/9 Drawing number reference only Flowserve Inc |
| SWS-718-09 | 5/9 Secondary reference Flowserve Inc |
NSN 4820-01-505-4233 is a Valve,check, manufactured by Flowserve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-505-4233 has 2 manufacturer part numbers on file: 59440A2 PN SWS-718-09 (Flowserve Inc), SWS-718-09DOD (Flowserve Inc).
Key specifications for SWS-718-09DOD: Flow Control Device: DISK; Furnished Items and Quantity: 4 BOLT AND 1 GASKET; Renewable Seat Ring Type: WELDED; Nominal Pipe Size Accommodated: 2.411 INCHES ALL ENDS IN. 15 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.