Plastic Filter Types: Manual Disc (PSD), Self Clean Disc (PSC) Disc Material: PP Manifold Material: Steel / Stainless Steel / Plastic Maximum Working Pressure: 6 Bar (87 PSI) Minimum Working Pressure: 2 Bar (29 PSI) Maximum Working Temperature : 60 °C (140 °F) Back Flush Operation Criteria: Pressure Differential Back Flush Controlling Unit : Manual Filtration Degree: 20-50-100-130 micron (µ)