Iso 7841 - 88 automatic steam traps ; determination of steam loss ; test methods iso 7841 : 1988 ; german version en 27841 : 1991 自动凝汽阀.蒸汽损失的测定.试验方法
Iso 6948 - 81 automatic steam traps ; production and performance characteristic tests iso 6948 : 1981 ; german version en 26948 : 1991 自动凝汽阀.生产和性能特征试验
Iso 7842 - 88 automatic steam traps ; determination of discharge capacity ; test methods iso 7842 : 1988 ; german version en 27842 : 1991 自动凝汽阀.排流量的测定.试验方法
The requirements for supervision of recovery of condensate from steam heating system and technique of automatic steam traps 蒸汽供热系统凝结水回收及蒸汽疏水阀技术管理要求