Product Name: Working Station (For Separate Solar Water Heater System)Model Number: SPA-1Place of Origin: ChinaFeatures: 1) Intelligent controller: automatic control, reliable performance 2) Circulation pump: little noise, high efficiency, long service time 3) Flow window: adjusts the circulation medium flux 4) Expansion vase: adjusts and balances the system working pressure when the medium expands due to the heat 5) Relief valve: stable working pressure at 0.6MPa ensure the system working stabilization