The Breaker,vacuum,flush Valve, cataloged under National Stock Number 4510-01-482-7933, is classified within Federal Supply Class 4510 (Plumbing Fixtures and Accessories) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4510-01-482-7933 |
| Primary Part Number | 9903K37 |
| Item Name | Breaker,vacuum,flush Valve |
| FSC / FSG | 4510 / 45 — Plumbing Fixtures and Accessories |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Outlet Connection Size | 3/4 |
| Nominal Overall Length | 3.375 INCHES IN |
| Inlet Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 9903K37 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| ASVB-.75-CP-LL | Mifab Inc (USA) |
| Reference | Meaning |
|---|---|
| 2670K14 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 4510-01-482-7933 is a Breaker,vacuum,flush Valve, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4510, Plumbing Fixtures and Accessories. Status: active.
NSN 4510-01-482-7933 has 2 manufacturer part numbers on file: 9903K37 (Mcmaster-Carr Supply Co), ASVB-.75-CP-LL (Mifab Inc).
Key specifications for 9903K37: Outlet Connection Size: 3/4; Nominal Overall Length: 3.375 INCHES IN; Inlet Connection Type: THREADED INTERNAL PIPE; Special Features: MAXIMUM TEMPERATURE 180F AT 125 PSI. 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.