SKU:波纹管平衡式安全阀（WA42Y） Description: 系列 Series WA42Y-16C WA42Y-25 WA42Y-40 WA42Y-64 WA42Y-100 WA42Y-16P WA42Y-25P WA42Y-40P WA42Y-64P WA42Y-100P WA42Y-16R WA42Y-25R WA42Y-40R WA42Y-64R WA42Y-100R 装置。连接法兰标准≤4MPa采用JB/T……-94系列1。>4MPa按JB/T……-94系列2标准。本阀门适用于工作温度≤200℃存在不稳定背压或有毒、腐蚀性介质的设备或管路上，作为超压保护 These safety valves are used for the equipment and pipeline of the poisonous gas, quality with corrode medium what the working temperature are less than 200 . Take for extra pressure protection devices. Flange connectiong dimensions of comply with Standard series first of JB/T -94 when less than 4MPa, comply wiht Standard series two of JB/T -94 when more than 4MPa.