The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-519-7481, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Broco Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-519-7481 |
| Primary Part Number | PC/TAC-R-B |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Broco Inc |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Regulation Type | MANUAL SINGLE STAGE |
| Outlet Pressure Range | 0.0 TO 100.0 CAMERA MOUNT |
| Manual Control Method | KNOB |
| Mounting Facility | EXTERNAL THREAD |
| Media for Which Designed | OXYGEN, GASEOUS |
| 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 |
|---|---|
| PC/TAC-R-B | Pacific Commercial Diving Supply Pty Ltd (AUS) |
| PC/TAC-R-B PRIMARY | Broco Inc (USA) |
| Reference | Meaning |
|---|---|
| 3000339 | 5/1 Secondary reference Lincoln Electric Co the Harris Calorific Div |
NSN 4820-01-519-7481 is a Valve,regulating,fluid Pressure, manufactured by Broco Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-519-7481 has 2 manufacturer part numbers on file: PC/TAC-R-B (Pacific Commercial Diving Supply Pty Ltd), PC/TAC-R-B (Broco Inc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-519-7496. Verify interchangeability with system specifications before substitution.
Key specifications for PC/TAC-R-B: Flow Control Device: DIAPHRAGM; Regulation Type: MANUAL SINGLE STAGE; Outlet Pressure Range: 0.0 TO 100.0 CAMERA MOUNT; Manual Control Method: KNOB. 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.