The Valve Assembly, cataloged under National Stock Number 4820-01-445-2377, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-445-2377 |
| Primary Part Number | U-009QT 1/2 |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Valve Quantity | 3 |
| Maximum Operating Temp and Media for Which Designed | 180.0 FAHRENHEIT WATER DEGF |
| Operating Pressure and Type | 175.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS |
| Connection Type | THREADED INTERNAL PIPE |
| End Connection Quantity | 2 |
| Valve Size | 0.500 INCHES IN |
| Nominal Thread Size | 0.500 INCHES IN |
| Body Material | COPPER ALLOY |
| Thread Series Designator | NPT |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| U-009QT 1/2 PRIMARY | Watts Regulator Company (USA) |
| LFU009-QT 1/2 | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| U-009-LF 1/2 | 5/9 Secondary reference Watts Regulator Company |
NSN 4820-01-445-2377 is a Valve Assembly, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-445-2377 has 2 manufacturer part numbers on file: U-009QT 1/2 (Watts Regulator Company), LFU009-QT 1/2 (Watts Regulator Company).
Key specifications for U-009QT 1/2: Valve Quantity: 3; Maximum Operating Temp and Media for Which Designed: 180.0 FAHRENHEIT WATER DEGF; Operating Pressure and Type: 175.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS; Connection Type: THREADED INTERNAL PIPE. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.