The Valve,check, cataloged under National Stock Number 4820-00-203-8329, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Cooper Machinery Services Llc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-203-8329 |
| Primary Part Number | 163 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Cooper Machinery Services Llc |
| Status | ACTIVE |
| Material | PLASTIC VINYL OR RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Thread Series Designator | NPT FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Thread Direction | RIGHT-HAND FIRST END |
| Material | IRON CAST SEAT |
| Style Designator | STRAIGHT THRU |
| Valve Operation Method | AUTOMATIC |
| Material | PLASTIC VINYL OR RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Thread Quantity Per Inch | 14 FIRST END |
| Flow Control Device | DISK |
| Thread Quantity Per Inch | 14 FIRST END |
| Nominal Pipe Size Accommodated | 0.750 INCHES FIRST END IN |
| Thread Series Designator | NPT FIRST END |
| Material | IRON CAST BODY |
| Material | IRON CAST SEAT |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-203-8329 is a Valve,check, manufactured by Cooper Machinery Services Llc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-203-8329 has 3 cross-referenced part numbers: C-163 (Cooper Machinery Services Llc), 163 (Cooper Machinery Services Llc), 151 (Cooper Machinery Services Llc).
There are 2 known substitutes for 4820-00-203-8329: 4130-00-844-7050, 4130-01-442-4754. Verify interchangeability with system specifications before substitution.
Key specifications for 163: Material: PLASTIC VINYL OR RUBBER SYNTHETIC FLOW CONTROL DEVICE; Thread Series Designator: NPT FIRST END; Nominal Thread Size: 0.750 INCHES FIRST END IN; Connection Type: THREADED INTERNAL PIPE FIRST END. 20 total characteristics are documented in the Federal Logistics Information System.