SKU:波紋管平衡式安全閥（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 裝置。連接法蘭標(biāo)準(zhǔn)≤4MPa采用JB/T……-94系列1。>4MPa按JB/T……-94系列2標(biāo)準(zhǔn)。本閥門適用于工作溫度≤200℃存在不穩(wěn)定背壓或有毒、腐蝕性介質(zhì)的設(shè)備或管路上，作為超壓保護(hù) 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.