The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-615-3433, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is T and S Brass and Bronze Works Inc. Government technical data includes 13 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 | 4820-01-615-3433 |
| Primary Part Number | B-0963 |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | T and S Brass and Bronze Works Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| First End Thread Series Designator | NPT |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | 68.0 FAHRENHEIT DEGF |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY FLANGED BOTH ENDS |
| First End Style Designator | PLAIN |
| Second End Thread Series Designator | NPT |
| Second End Thread Direction | RIGHT-HAND |
| First End Connection Type | THREADED INTERNAL PIPE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Nominal Pipe Size Accommodated | 0.500 INCHES IN |
| Material | COPPER ALLOY BODY |
| First End Nominal Thread Size | 0.500 INCHES IN |
| 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 |
|---|---|
| B-0963 PRIMARY | T and S Brass and Bronze Works Inc (USA) |
NSN 4820-01-615-3433 is a Valve,vacuum Breaking, manufactured by T and S Brass and Bronze Works Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-615-3433 has 1 manufacturer part number on file: B-0963 (T and S Brass and Bronze Works Inc).
Key specifications for B-0963: Flow Control Device: BALL; First End Thread Series Designator: NPT; First End Thread Direction: RIGHT-HAND; Temp Rating: 68.0 FAHRENHEIT DEGF. 13 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.