The Valve,check, cataloged under National Stock Number 4820-01-143-4311, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Humphrey Products Co. Government technical data includes 14 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-143-4311 |
| Primary Part Number | C125 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Humphrey Products Co |
| Status | ACTIVE |
| Material | COPPER ALLOY BODY |
| Nominal Thread Size | 0.125 INCHES ALL ENDS IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Flow Control Device | POPPET |
| Maximum Operating Temp | 212.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Valve Operation Method | AUTOMATIC |
| Operating Pressure | 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL CORROSION RESISTING STEM |
| Style Designator | STRAIGHT THRU |
| Thread Series Designator | NPT ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-143-4311 is a Valve,check, manufactured by Humphrey Products Co, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-143-4311 has 2 cross-referenced part numbers: C125 (Humphrey Products Co), 1142512 (American Laundry Machinery Inc).
There are 12 known substitutes for 4820-01-143-4311: 3120-00-151-5051, 3040-00-194-2389, 6105-00-312-3109 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for C125: Material: COPPER ALLOY BODY; Nominal Thread Size: 0.125 INCHES ALL ENDS IN; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Material: COPPER ALLOY FLOW CONTROL DEVICE. 14 total characteristics are documented in the Federal Logistics Information System.