Delivery and return solar station for primary circuits of solar systems with integrated controller. The flow goes from the solar panel to the boiler. It includes: interception ball valves with thermometers, pump for solar plants, air vent group, 6 bar safety valve, filling and drain taps to wash the system before filling, 0-12 lt/min flowmeter to regulate the flow, antigravity check valve, gauge, thermal-proof shell. It can be integrated with the microprocessor units art. S303 or art. S305. Technical datasheet Instruction Sheet Declaration of Conformity