... , temperature display.Components 1.Safety valve: make sure the system safety working2.Ball valve,check valve: brass material3.WILO pump: this ... difference circulation pump, water-using end circulation pump) or electromagnetic valve : 600W6.Electronical booster power: ≤3000W7.Input signal: 6 ... booster, 4 pumps or 3 pumps and 1 three way electromagnetic valve)9.System working pressure 8 bar and safety ...