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a-r系列
model features
name ：relief valve
model no.：a-r系列
model no.：a-r系列
overview：
this valve can be used as safety valve and work together with air valve and burning devices.
feature：
good stability;
turn on the valve to ensure the normal pressure, when abnormal pressure happens that caused by equipment failure or abnormal temperature rise.
turn on the valve to ensure the normal pressure, when abnormal pressure happens that caused by equipment failure or abnormal temperature rise.