The Valve,safety Relief, cataloged under National Stock Number 4820-01-475-9236, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Les Automatismes Appliques. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-475-9236 |
| Primary Part Number | 562A3M50 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Les Automatismes Appliques |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU W/BAFFLE |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL COMP 302 FLOW CONTROL DEVICE |
| Material | ALUMINUM BODY |
| Material | PLASTIC POLYPROPYLENE PACKING |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 562A3M50 | Les Automatismes Appliques (FRA) |
| 562A3M50 | Air Liquide Advanced Technologies (FRA) |
| WSC027 | Air Liquide Advanced Technologies (FRA) |
| WSS027 | Air Liquide Advanced Technologies (FRA) |
| Reference | Meaning |
|---|---|
| 562A-3M-50 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-475-9236 is a Valve,safety Relief, manufactured by Les Automatismes Appliques, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-475-9236 has 4 manufacturer part numbers on file: 562A3M50 (Les Automatismes Appliques), 562A3M50 (Air Liquide Advanced Technologies), WSC027 (Air Liquide Advanced Technologies), WSS027 (Air Liquide Advanced Technologies).
Key specifications for 562A3M50: Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU W/BAFFLE; Operating Pressure: 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 12 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.