The Valve,check, cataloged under National Stock Number 4820-01-189-8522, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Swagelok Co. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-189-8522 |
| Primary Part Number | A-4CP2-10 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY FLOW CONTROL DEVICE |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Material | ALUMINUM ALLOY BODY |
| Disk Loading Method | SPRING |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Flow Control Device | POPPET |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Thread Series Designator | NPT ALL ENDS |
| Material | ALUMINUM ALLOY AND RUBBER SEAT |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-189-8522 is a Valve,check, manufactured by Swagelok Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-189-8522 has 2 cross-referenced part numbers: A-4CP2-10 (Swagelok Co), A-4CP2-10 (Nupro Co).
There is 1 known substitute for 4820-01-189-8522: 4820-01-004-7922. Verify interchangeability with system specifications before substitution.
Key specifications for A-4CP2-10: Material: ALUMINUM ALLOY FLOW CONTROL DEVICE; Maximum Operating Temp: 300.0 FAHRENHEIT SINGLE RESPONSE DEGF; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS. 15 total characteristics are documented in the Federal Logistics Information System.