安裝注意事項(xiàng)Installment matters attention
1、本蝶閥安裝前必須清洗內(nèi)腔雜物。
2、本閥可在一定范圍內(nèi)伸縮，因此安裝前必須松開伸縮部位的密封墊壓蓋.然后將伸縮節(jié)調(diào)節(jié)到所需位置鎖緊管道螺栓后，再鎖緊伸縮密封壓蓋，本閥不能超范圍使用。
1.This butterfly valve must rinse the cavity odds and ends before the installation.
2.These valve approve in the field flex, hence fasten must loosen pars contractilis steric seal gland, then should telescopic joint regulate to required position keeper conduit bolt post, anew keeper flex gland,these valve be incapable of exceed scope use up on.