The Valve,safety Relief, cataloged under National Stock Number 4820-01-321-6400, 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 15 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 | 4820-01-321-6400 |
| Primary Part Number | 1385 B/M 20477735 3/8IN |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 0.375 INCHES ALL ENDS IN |
| Connection Style | SOCKET WITH BRAZING RING ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Adjustable Pressure Range | +20.0 TO 35.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRING |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | UNION |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY SEAT |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 1385 B/M 20477735 3/8IN PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-01-321-6400 is a Valve,safety Relief, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-321-6400 has 1 manufacturer part number on file: 1385 B/M 20477735 3/8IN (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for 1385 B/M 20477735 3/8IN: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 0.375 INCHES ALL ENDS IN; Connection Style: SOCKET WITH BRAZING RING ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 15 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.