The Valve,safety Relief, cataloged under National Stock Number 4820-01-581-5585, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydraforce Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-581-5585 |
| Primary Part Number | RV08-20A-0-N-9 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hydraforce Inc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Style Designator | SCREW-IN CARTRIDGE |
| Adjustable Pressure Range | +6.9 TO 75.8 BAR |
| Maximum Operating Temp | -40.0 CELSIUS SECOND RESPONSE DEGC |
| Maximum Operating Temp | 120.0 CELSIUS FIRST RESPONSE DEGC |
| Disk Loading Method | SPRING |
| Media for Which Designed | HYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE |
| Material | STEEL BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| 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 |
|---|---|
| DF01-851-13 | Mpower Projects Pty Limited (AUS) |
| RV08-20A-0-N-9 PRIMARY | Hydraforce Inc (USA) |
NSN 4820-01-581-5585 is a Valve,safety Relief, manufactured by Hydraforce Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-581-5585 has 2 manufacturer part numbers on file: DF01-851-13 (Mpower Projects Pty Limited), RV08-20A-0-N-9 (Hydraforce Inc).
Key specifications for RV08-20A-0-N-9: Flow Control Device: POPPET; Style Designator: SCREW-IN CARTRIDGE; Adjustable Pressure Range: +6.9 TO 75.8 BAR; Maximum Operating Temp: -40.0 CELSIUS SECOND RESPONSE DEGC. 10 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.