The system should be flushed before the backflow valve is installed 在安裝回流閥之前系統(tǒng)應該進行沖刷。
If the system is not flushed until after the backflow valve is installed , remove both check modules from the valve and open the inlet shutoff to allow water to flow for a sufficient time to flush debris from the water line 如果在安裝回流閥之前系統(tǒng)還為沖洗,則從閥門上拆卸兩個止回閥模塊,開啟進口關閉閥,讓水流過足夠長的時間來沖洗水管內的堆積物。
If the system is not flushed until after the backflow valve is installed , remove both check modules from the valve and open the inlet shutoff to allow water to flow for a sufficient time to flush debris from the water line 如果系統(tǒng)在防回流閥安裝后仍然沒有沖洗,則要從閥門上拆卸兩個止回閥模塊,開啟進口關閉閥,讓水流過足夠長的時間,已從水管線內沖洗碎片。