When the proper temperature is reached, alloy will flow readily into space between tube outer wall and valve socket.
达到适当的温度后，合金将迅速容易地流进管道外壳和阀门套管之间的空间。
2
Be sure that valve is fully open. Apply heat to tube first. Transfer as much heat as possible through tube into valve. Avoid prolonged heating of valve itself.
要确保阀门处于开启状态。先对管道加热。尽可能多的将热从管道传递到阀门。避免延长阀门本身的加热时间。
3
Two common types are the fixed orifice, or the orifice tube, and the thermostatic expansion valve.