The Valve,check, cataloged under National Stock Number 4820-00-721-9927, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tyco Fire Products Lp. Government technical data includes 22 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-721-9927 |
| Primary Part Number | 19772 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Nominal Pipe Size Accommodated | 0.500 INCHES SECOND END IN |
| Thread Series Designator | NPT SECOND END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Maximum Operating Temp | 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | COPPER ALLOY OVERALL |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Thread Series Designator | NPT FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Flow Control Device | POPPET |
| Valve Operation Method | AUTOMATIC |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Disk Loading Method | SPRING |
| Thread Quantity Per Inch | 14 SECOND END |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 19772 | Tyco Fire Products Lp (USA) |
| 482 1-2B1-3 | Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit (USA) |
NSN 4820-00-721-9927 is a Valve,check, manufactured by Tyco Fire Products Lp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-721-9927 has 2 cross-referenced part numbers: 19772 (Tyco Fire Products Lp), 482 1-2B1-3 (Teledyne Industries Inc Teledyne Fluid Systems Republic Business Unit).
There are 6 known substitutes for 4820-00-721-9927: 5360-00-113-0918, 6635-00-204-3323, 5360-00-252-8462 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 19772: Connection Style: PLAIN (PIPE) SECOND END; Connection Type: THREADED EXTERNAL PIPE SECOND END; Connection Type: THREADED INTERNAL PIPE FIRST END; Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN. 22 total characteristics are documented in the Federal Logistics Information System.