The Valve,safety Relief, cataloged under National Stock Number 4820-01-411-4245, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Systems Company Dba Allied Systems Co. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-411-4245 |
| Primary Part Number | 235050 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allied Systems Company Dba Allied Systems Co |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN (SCREW-IN CARTRIDGE) ALL ENDS |
| Connection Type | THREADED CARTRIDGE ALL ENDS |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +150.0 TO 3000.0 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.312 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | STEEL BODY |
| Thread Series Designator | UN 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 |
|---|---|
| 235050 | Allied Systems Company Dba Allied Systems Co (USA) |
| Reference | Meaning |
|---|---|
| RV5-16-C-0-30/17.5 | 3/9 Design control — primary reference Modular Controls Corp |
| A105ITEM1 | 5/9 Secondary reference Modular Controls Corp |
NSN 4820-01-411-4245 is a Valve,safety Relief, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-411-4245 has 1 manufacturer part number on file: 235050 (Allied Systems Company Dba Allied Systems Co).
Key specifications for 235050: Flow Control Device: DISK; Connection Style: PLAIN (SCREW-IN CARTRIDGE) ALL ENDS; Connection Type: THREADED CARTRIDGE ALL ENDS; Style Designator: SCREW-IN CARTRIDGE. 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.