The Valve,check, cataloged under National Stock Number 4820-01-436-7844, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-436-7844 |
| Primary Part Number | C620S |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Disk Loading Method | SPRING |
| Material | STEEL CORROSION RESISTING BODY |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Thread Class | 2B ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Opening Pressure Setting | 5.0 POUNDS PER SQUARE INCH LBS |
| Style Designator | STRAIGHT THRU |
| Thread Series Designator | UNF ALL ENDS |
| Flow Control Device | POPPET |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Valve Operation Method | AUTOMATIC |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Nominal Thread Size | 0.563 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C620S PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| 5018-1 | Eaton Aviation Corporation (USA) |
| 12491818 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 5FPU PRIMARY | Ssp Fittings Corp (USA) |
| 10628107 | General Dynamics Land Systems Canadacorp (CAN) |
| 5018 | Eaton Aviation Corporation (USA) |
NSN 4820-01-436-7844 is a Valve,check, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-436-7844 has 6 cross-referenced part numbers: C620S (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division), 5018-1 (Eaton Aviation Corporation), 12491818 (U S Army Tank Automotive Command Amsta-Im-Mm), 5FPU (Ssp Fittings Corp), 10628107 (General Dynamics Land Systems Canadacorp) and 1 more.
There are 9 known substitutes for 4820-01-436-7844: 4920-00-041-1159, 4330-00-054-0698, 3455-00-187-2561 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for C620S: Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Disk Loading Method: SPRING; Material: STEEL CORROSION RESISTING BODY; End Item Identification: SUPPORT EQUIP, C17A AIRCRAFT. 15 total characteristics are documented in the Federal Logistics Information System.