The Valve,safety Relief, cataloged under National Stock Number 4820-01-477-4529, 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 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-477-4529 |
| Primary Part Number | YB2385G221 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 15.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | BRONZE BODY |
| 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 |
|---|---|
| YB2385G221 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| E3650 ASSY YB2385G221 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| E3650 ASSY 1385 1.50IN 9T15PSI | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-01-477-4529 is a Valve,safety Relief, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-477-4529 has 3 manufacturer part numbers on file: YB2385G221 (Leslie Controls, Inc. Dba Leslie Controls Inc), E3650 ASSY YB2385G221 (Leslie Controls, Inc. Dba Leslie Controls Inc), E3650 ASSY 1385 1.50IN 9T15PSI (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for YB2385G221: Style Designator: STRAIGHT THRU; Operating Pressure: 15.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Special Features: SBU ENDS,MODEL 1385 1 1/2 IN. VALVE IN; Material: BRONZE BODY. 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.