译文：
1.根据实际使用工况确定蒸汽疏水阀的入口与出口的压差。蒸汽疏水阀的入口压力是指由于蒸汽压力的波动或温度调剂阀的节流，蒸汽疏水阀入口处的{zd1}工作压力；蒸汽疏水阀的出口压力是指蒸汽疏水阀后可能形成的{zg}工作背压，当排入大气时，实际压差按蒸汽疏水阀入口压力决定。
2.根据蒸汽供热设备在正常工作时产生的凝结水量，乘以选用修正系数k，然后按照蒸汽疏水阀的排水量进行选择。
3.凝结水量可以用以下方法计算：
（1）管线运行时产生的凝结水量Q=q0L(1-Z/%)(kg/h),此公式中：
Q：凝结水量（kg/h）
q0：光管产生的凝结水量（kg/h）
L：疏水点之间的距离（m）
Z：保温效率（％）
（2）蒸汽加热设备运行时产生的凝结水量Q=VrC△T/Ht，此公式中：
Q：凝结水量（kg/h）
V：被加热物体的体积（m3）
r：被加热物体的密度（kg/m3）
C：液体的比热（kcal/kg.OC）
△T：液体温升（OC）
H：蒸汽潜热（kcal/kg）
t：加热时间
4．下表1中推荐了常见使用工况的选用修正系数K的数值，供用户参考。
5．各种类型的蒸汽疏水阀结构及原理有所不同，性能也不尽相同，在选用时可根据不同的使用场合，选择不同的蒸汽疏水阀。
“ Teach you how to choose the right steam trap ”是由提供的国际阀门新闻，译文仅供参考。另外，中国疏水阀网还提供相关产品搜索：、、、、等。
原文：
1. According to the actual condition of steam traps to determine the pressure difference between inlet and outlet. Steam trap inlet pressure is that due to fluctuations in steam pressure or temperature regulating throttle valve, steam trap at the entrance of the minimum working pressure; steam trap steam trap outlet pressure is the highest form of work after the back pressure may be When discharged into the atmosphere, the actual pressure steam trap inlet pressure by the decision.
2. According to the steam heating equipment in normal working hours and the condensation of water, multiplied by the selected correction factor k, then follow the displacement of steam trap selection.
3. Condensate water can be calculated using the following methods:
(1) pipeline running to the condensation of water Q = q0L (1-Z /%) (kg / h), this formula:
Q: Condensation of water (kg / h)
q0: fluorescent tubes, the condensation of water (kg / h)
L: distance between the hydrophobic (m)
Z: thermal efficiency (%)
(2) steam heating
equipment in operation and the condensation of water Q = VrC △ T / Ht, in this formula:
Q: Condensation of water (kg / h)
V: volume of the heated object (m3)
r: the density of the object being heated (kg/m3)
C: Liquid Heat (kcal / kg.OC)
△ T: liquid
temperature (OC)
H: steam latent heat (kcal / kg)
t: heating time
4. The following table 1, using the conditions recommended by the common choice of correction factor K values for user reference.
5. Various types of steam traps and the principle of different properties are not the same, the choice of when to use according to different occasions, choose a different steam traps.
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