The Valve,safety Relief, cataloged under National Stock Number 4820-01-284-4246, 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 29 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 | 4820-01-284-4246 |
| Primary Part Number | S1384 P/L4210 20T35PSI |
| 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 |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Furnished Items and Quantity | 1 LEVER |
| Flange Face Design | PLAIN FIRST END |
| Flange Face Design | PLAIN SECOND END |
| Bolt Circle Nominal Diameter | 4.438 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 3.938 INCHES SECOND END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | FLANGE FIRST END |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.688 INCHES FIRST END IN |
| Bolt Hole Nominal Diameter | 0.562 INCHES SECOND END IN |
| Valve Size | 1.500 INCHES IN |
| Adjustable Pressure Range | +20.0 TO 35.0 POUNDS PER SQUARE INCH LBS |
| Second Connection Face to Centerline Distance | 3.750 INCHES IN |
| Nominal Outside Diameter | 1.900 INCHES SECOND END IN |
| Nominal Outside Diameter | 2.375 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 6 FIRST END |
| Bolt Hole Quantity | 6 SECOND END |
| Face to Face Distance | 1.500 INCHES IN |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| First Connection Face to Centerline Distance | 3.750 INCHES IN |
| Material | STEEL STEM |
| Material | RUBBER SEAT |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.812 INCHES SECOND END IN |
| Nominal Thickness | 0.812 INCHES FIRST END 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 |
|---|---|
| S1384 P/L4210 20T35PSI PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-01-284-4246 is a Valve,safety Relief, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-284-4246 has 1 manufacturer part number on file: S1384 P/L4210 20T35PSI (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for S1384 P/L4210 20T35PSI: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES FIRST END; Flange Shape: ROUND WITH HOLES SECOND END; Furnished Items and Quantity: 1 LEVER. 29 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.