The Breaker,vacuum,flush Valve, cataloged under National Stock Number 4510-01-239-5321, 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 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4510-01-239-5321 |
| Primary Part Number | 288A 2-1/2IN |
| Item Name | Breaker,vacuum,flush Valve |
| FSC / FSG | 4510 / 45 — Plumbing Fixtures and Accessories |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Outlet Connection Size | 2-1/2 |
| Inlet Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY |
| Inlet Connection Size | 2-1/2 |
| 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 |
|---|---|
| 288A 2-1/2IN PRIMARY | Watts Regulator Company (USA) |
NSN 4510-01-239-5321 is a Breaker,vacuum,flush Valve, manufactured by Watts Regulator Company, classified under FSC 4510, Plumbing Fixtures and Accessories. Status: active.
NSN 4510-01-239-5321 has 1 manufacturer part number on file: 288A 2-1/2IN (Watts Regulator Company).
Key specifications for 288A 2-1/2IN: Outlet Connection Size: 2-1/2; Inlet Connection Type: THREADED INTERNAL PIPE; Special Features: MAX TEMP 212 DEG;125 LBS WP/FULL SIZE OFIFICE;6.375 IN. DIA,3.000 IN. FROM BOTTOM TO CTROF OUTLET;4.375 IN. FROM CTR OF OUTLET TO TOP;HOT OR COLD WATER ANTI SIPHON VACUUM BREAKER LBS; Material: COPPER ALLOY. 5 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.