... collector, water tank/boiler, circulation pump, expansion evessel, controller,flowing meter,pressure gauge3) Capacity: 150L,200L,250L,300L,500L4) Working temperature ... OR aluminum alloyTube holderUV stabilized nylonSealssilicon sealContact sheetsaluminum fin 2012 type split pressurized solar water heater (with SRCC,EN12975,Solar keymark ...