The Valve,check, cataloged under National Stock Number 4820-01-255-7791, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mmc International Corp.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-255-7791 |
| Primary Part Number | 1-1804-4 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Mmc International Corp. |
| Status | ACTIVE |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Flow Control Device | POPPET |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Valve Operation Method | AUTOMATIC |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | STRAIGHT THRU |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1-1804-4 | Mmc International Corp. (USA) |
| D-1771-1 ITEM 4 | Mmc International Corp. (USA) |
NSN 4820-01-255-7791 is a Valve,check, manufactured by Mmc International Corp., classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-255-7791 has 2 cross-referenced part numbers: 1-1804-4 (Mmc International Corp.), D-1771-1 ITEM 4 (Mmc International Corp.).
There are 4 known substitutes for 4820-01-255-7791: 5935-00-193-3080, 6625-00-333-9243, 5340-00-370-3165 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1-1804-4: Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE; Flow Control Device: POPPET; Material: PLASTIC POLYTETRAFLUOROETHYLENE SEAT; Valve Operation Method: AUTOMATIC. 9 total characteristics are documented in the Federal Logistics Information System.