The Valve,flow Control, cataloged under National Stock Number 4820-01-532-4870, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-532-4870 |
| Primary Part Number | Y201778701 |
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Operating Pressure and Type | 800.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS |
| Connection Type | THREADED INTERNAL PIPE |
| Valve Size | 0.500 INCHES IN |
| Nominal Thread Size | 0.500 INCHES IN |
| Body Material | ALUMINUM ALLOY |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| Y201778701 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| 31534N SHT 2 P/N PDAPN-1 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-01-532-4870 is a Valve,flow Control, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-532-4870 has 2 manufacturer part numbers on file: Y201778701 (Leslie Controls, Inc. Dba Leslie Controls Inc), 31534N SHT 2 P/N PDAPN-1 (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for Y201778701: Flow Control Device: DIAPHRAGM; Operating Pressure and Type: 800.0 POUNDS PER SQUARE INCH (PSI) AIR MAXIMUM REQUIRED LBS; Connection Type: THREADED INTERNAL PIPE; Valve Size: 0.500 INCHES IN. 9 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.