... :safe value, wilo pump ,manometer, flow meter , controller.3 Anode magnesium Bar,usually hard water in system so as to pretect storage ... collectors , and large scale solar hot water heating systems, with quality standard conforming to global certificateda asISO,CE,EN12975, etc.Of ... enjoiy a ahigh reputation.In the contect of a growing global energy ctisis, our company had been established with a ...