The Breaker,vacuum,flush Valve, cataloged under National Stock Number 4510-01-659-4079, is classified within Federal Supply Class 4510 (Plumbing Fixtures and Accessories) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Watts Regulator Company. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4510-01-659-4079 |
| Primary Part Number | LF800M4-QT 1.50" |
| Item Name | Breaker,vacuum,flush Valve |
| FSC / FSG | 4510 / 45 — Plumbing Fixtures and Accessories |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Outlet Connection Size | 1.50 INCH IN |
| Nominal Overall Length | 9.50 INCHES IN |
| Inlet Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY |
| Inlet Connection Size | 1.50 INCH IN |
| Outlet Connection Type | THREADED INTERNAL PIPE |
| 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 |
|---|---|
| LF800M4-QT 1.50" PRIMARY | Watts Regulator Company (USA) |
| 1 1/2 LF800M4-QT PRIMARY | Watts Regulator Company (USA) |
| 0792014 PRIMARY | Watts Regulator Company (USA) |
NSN 4510-01-659-4079 is a Breaker,vacuum,flush Valve, manufactured by Watts Regulator Company, classified under FSC 4510, Plumbing Fixtures and Accessories. Status: active.
NSN 4510-01-659-4079 has 3 manufacturer part numbers on file: LF800M4-QT 1.50" (Watts Regulator Company), 1 1/2 LF800M4-QT (Watts Regulator Company), 0792014 (Watts Regulator Company).
Key specifications for LF800M4-QT 1.50": Outlet Connection Size: 1.50 INCH IN; Nominal Overall Length: 9.50 INCHES IN; Inlet Connection Type: THREADED INTERNAL PIPE; Part Name Assigned by Controlling Agency: ANTI-SIPHON PRESSURE VACUUM BREAKER. 6 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.