The Valve,check, cataloged under National Stock Number 4820-00-268-8779, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is The Walworth Company. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-268-8779 |
| Primary Part Number | 3412 1IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | The Walworth Company |
| Status | CANCELLED |
| Flow Control Device | DISK |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Mounting Position | HORIZONTAL |
| Valve Operation Method | AUTOMATIC |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Nondefinitive Spec/std Data | 4 TYPE AND 150PSI CLASS AND A END AND 1.000 SIZE |
| Nominal Thread Size | 1.000 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Thread Series Designator | NPT ALL ENDS |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Specification/standard Data | 59646-MSS SP-80 MANUFACTURERS STANDARD |
| Material | COPPER ALLOY OVERALL |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Maximum Operating Temp | 250.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Pipe Size Accommodated | 1.000 INCHES FIRST END IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 352-1IN | Jenkins Bros (USA) |
| WWV51 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 412 | The Walworth Company (USA) |
| 352-1-300FT | Jenkins Bros (USA) |
| 3412 1IN PRIMARY | The Walworth Company (USA) |
| 05 | Conbraco Industries Inc R-P and C Valve Div (USA) |
| MSS SP-80 | Manufacturers Standardization Society of the Valve and Fittings Industry Inc (USA) |
NSN 4820-00-268-8779 is a Valve,check, manufactured by The Walworth Company, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-268-8779 has 7 cross-referenced part numbers: 352-1IN (Jenkins Bros), WWV51 (Federal Specifications Promulgated by General Services Administration Washington DC), 412 (The Walworth Company), 352-1-300FT (Jenkins Bros), 3412 1IN (The Walworth Company) and 2 more.
There are 11 known substitutes for 4820-00-268-8779: 5342-00-045-5052, 5330-00-045-5054, 2990-00-078-7892 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3412 1IN: Flow Control Device: DISK; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Mounting Position: HORIZONTAL; Valve Operation Method: AUTOMATIC. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-268-8779 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.