The Valve,safety Relief, cataloged under National Stock Number 4820-01-426-0333, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Landoll Company, Llc. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-426-0333 |
| Primary Part Number | 12413090 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Landoll Company, Llc |
| Status | ACTIVE |
| Connection Style | PLAIN (SCREW-IN CARTRIDGE) ALL ENDS |
| Minimum Operating Temp | -40.0 FAHRENHEIT DEGF |
| Connection Type | THREADED CARTRIDGE ALL ENDS |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 3600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.875 INCHES ALL ENDS IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Thread Series Designator | UNF ALL ENDS |
| Valve Discharge Flow Rate | 20.0 GALLONS PER MINUTE |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 12413090 | Landoll Company, Llc (USA) |
| 12413090 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| 12413090 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| RV3-10-S-0-27 | 3/9 Design control — primary reference Modular Controls Corp |
NSN 4820-01-426-0333 is a Valve,safety Relief, manufactured by Landoll Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-426-0333 has 3 manufacturer part numbers on file: 12413090 (Landoll Company, Llc), 12413090 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 12413090 (Amz Alabama Inc.).
Key specifications for 12413090: Connection Style: PLAIN (SCREW-IN CARTRIDGE) ALL ENDS; Minimum Operating Temp: -40.0 FAHRENHEIT DEGF; Connection Type: THREADED CARTRIDGE ALL ENDS; Style Designator: SCREW-IN CARTRIDGE. 17 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.