The Valve,stop-Check, cataloged under National Stock Number 4820-00-919-7331, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-919-7331 |
| Primary Part Number | 80661-00-3/4INCID882039253 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 0.750 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 | ASTM A105,GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A182,GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Maximum Operating Temp | 775.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Bonnet Attachment Method | BOLTED |
| Media for Which Designed | OIL FIRST RESPONSE |
| Media for Which Designed | STEAM SECOND RESPONSE |
| Media for Which Designed | WATER, FRESH THIRD RESPONSE |
| Material | STEEL BODY |
| 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 | S |
| Part Number | Manufacturer |
|---|---|
| 80661-00-3/4INCID882039253 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| C522-0-BREVA/C522-0-B2/882039337 PRIMARY | Hunt Valve Company, Inc. (USA) |
| W04208402TS 33311-30G-882039245 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| MILV22094 | 4/1 Identification reference U.S. Government activity |
| W4-2842TS | 5/9 Secondary reference Velan Valve Corp. |
NSN 4820-00-919-7331 is a Valve,stop-Check, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-919-7331 has 3 manufacturer part numbers on file: 80661-00-3/4INCID882039253 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), C522-0-BREVA/C522-0-B2/882039337 (Hunt Valve Company, Inc.), W04208402TS 33311-30G-882039245 (Velan Valve Corp.).
Key specifications for 80661-00-3/4INCID882039253: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 0.750 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS; Mounting Position: HORIZONTAL. 19 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.