Direct Operated Pressure Relief Valve – DPR
The Polyhydron DPR is a direct-acting, poppet-type pressure relief valve designed for hydraulic systems. It functions by automatically opening a flow path from the inlet (port P) to the tank (port T) when the system pressure exceeds a pre-set limit, thereby protecting equipment from over-pressurization.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The Polyhydron Direct Operated Pressure Relief Valve – DPR is a direct-acting valve featuring a guided, cushioned poppet for stable and reliable pressure control. It is available in cartridge, threaded, and sub-plate mounting types, offering flexibility for various hydraulic system applications.
| Nominal pressure and flow ratings | |||||||
|---|---|---|---|---|---|---|---|
| Model | Max. working pr. (bar) |
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| Max. flow in l/min |
|||||||
| DPR 06 | 700 | 30 | |||||
| DPR 10 | 400 | 80 | |||||
| DPR 20 | 400 | 160 | |||||
Key Features
The DPR series is versatile, offering various sizes and mounting options to fit different industrial requirements:
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- Sizes: Available in three nominal sizes: 06, 10, and 20.
- Pressure Ranges: Seven standard pressure setting ranges are available: Up to 25, 50, 100, 200, 315, 400, and a special 700 bar version (exclusive to size 06).
- Flow Capacity:
- Size 06:Â Up to 30 L/min.
- Size 10:Â Up to 80 L/min.
- Operating Conditions:
- Medium:Â Mineral oil with a viscosity range of 10 cSt to 380 cSt.
- Temperature: Operates between -20°C and +70°C.
- Cleanliness:Â Requires oil cleanliness of ISO 16/13 or better.
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