The Valve Assembly,manifold, cataloged under National Stock Number 4820-01-516-5980, 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 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-516-5980 |
| Primary Part Number | 1 1/2 LF909QTFS |
| Item Name | Valve Assembly,manifold |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Maximum Operating Temp and Media for Which Designed | 140.0 FAHRENHEIT LIQUID AND 140.0 FAHRENHEIT AIR DEGF |
| Operating Pressure and Type | 175.0 POUNDS PER SQUARE INCH (PSI) LIQUID MAXIMUM REQUIRED AND 175.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS |
| Valve Size | 1.500 INCHES IN |
| Unpackaged Unit Weight | 18.0 KILOGRAMS KG |
| Body Material | COPPER ALLOY |
| Thread Series Designator | NPT |
| Valve Operation Method | AUTOMATIC AND MANUAL |
| 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 |
|---|---|
| 1 1/2 LF909QTFS PRIMARY | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| 909M1QT-0385718-1.50IN | 5/9 Secondary reference Watts Regulator Company |
| 1 1/2 LF909M1-QT | 5/9 Secondary reference Watts Regulator Company |
NSN 4820-01-516-5980 is a Valve Assembly,manifold, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-516-5980 has 1 manufacturer part number on file: 1 1/2 LF909QTFS (Watts Regulator Company).
Key specifications for 1 1/2 LF909QTFS: Maximum Operating Temp and Media for Which Designed: 140.0 FAHRENHEIT LIQUID AND 140.0 FAHRENHEIT AIR DEGF; Operating Pressure and Type: 175.0 POUNDS PER SQUARE INCH (PSI) LIQUID MAXIMUM REQUIRED AND 175.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS; Overall Length: 19.000 INCHES MAXIMUM IN; Overall Width: 12.000 INCHES MAXIMUM IN. 7 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.