The Valve,check, cataloged under National Stock Number 4820-01-381-3983, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 14 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-381-3983 |
| Primary Part Number | 1509-100 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Furnished Items and Quantity | 1 LEVER |
| Operating Pressure | 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Flow Control Device | DISK |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-381-3983 is a Valve,check, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-381-3983 has 2 cross-referenced part numbers: 1509-100 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 1509-1 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
There are 8 known substitutes for 4820-01-381-3983: 4820-00-164-3377, 4730-00-353-2995, 2910-00-483-0986 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1509-100: Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Valve Operation Method: AUTOMATIC; Mounting Position: HORIZONTAL; Connection Style: SOCKET (PIPE) ALL ENDS. 15 total characteristics are documented in the Federal Logistics Information System.