... high quality, best price,fast delivery, good guarantee Split pressure Solar water heatingThe collector: We supply 3 series of solar ... .2.Tank body: Stainless steel or crystal plastic, working pressure 650kpa.3.Closed-loop or open-loop operation mode for ... 10L expansion vase3.Safety valve: 6 bar safety valve4.Flowmeter / pressure gauge solar energy water heaterPls read the specifications carefully, for ...