The Valve,vacuum Regulating, cataloged under National Stock Number 4820-01-532-1505, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mirada Research & Manufacturing, Inc.. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-532-1505 |
| Primary Part Number | B51343 |
| Item Name | Valve,vacuum Regulating |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mirada Research & Manufacturing, Inc. |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Nominal Thread Size | 1.062 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 |
|---|---|
| B51343 PRIMARY | Mirada Research & Manufacturing, Inc. (USA) |
| Reference | Meaning |
|---|---|
| B-51343-3.5 | 5/9 Secondary reference Mirada Research & Manufacturing, Inc. |
NSN 4820-01-532-1505 is a Valve,vacuum Regulating, manufactured by Mirada Research & Manufacturing, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-532-1505 has 1 manufacturer part number on file: B51343 (Mirada Research & Manufacturing, Inc.).
Key specifications for B51343: First End Thread Direction: RIGHT-HAND; Body Style: SINGLE CONNECTION, STRAIGHT FLOW; Special Features: THREAD SERIES, UN; HEIGHT, 1.344 INCHES IN; First End Nominal Thread Size: 1.062 INCHES IN. 3 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.