Features Connections: Female-female threaded BSP Flow Capacity Range: 20mm 3/4" size Standard model: 20mm - 0.2-5.0 m3/h 25mm - 0.45-8.0 m3/h 40mm - 0.45-18.2 m3/h Pressure Rating: Minimum working pressure 0.7 bar (10 psi) maximum working pressure 9 bar (130 psi) Temperature Range: Water up to 80°C (180°F) Materials 20mm and 25mm: Body: Glass Filled Nylon Diaphragm: NBR (Buna-N), Nylon Fabric Reinforced Spring: Stainless steel 40mm: Body: Glass Filled Nylon Diaphragm: NBR (Buna-N), Nylon Fabric Reinforced Spring and shafts: Stainless steel Spring Selection Table Setting Range ( BAR / PSI) Spring Color Spring Name 0.5 - 1.2 / 7 - 18 White B 1.0 - 2.0 / 14 - 29 Red C 1.5 - 3.5 / 22 - 51 Black D
