Tube Arrangement
Be sure not to twist.
 In case flexible tube is installed in twisted state, it obstructs smooth water supply.
 Tighten the joint so that tube couldn't be twisted
  and then check if it has been properly tightened.
Try to make a bending on the same plane.
Avoid bending as far as possible.
 The smallest bending deteriorates pressure-proof.
 Be sure to conform to the prescribed bending radius.
Be sure to arrange in proper length.
 Forcible arrangement of tube with too short length reduces lifetime and pressure-proof of pipeline.
Put a support to pipeline close to the tube.
 Pipeline without supports may increase vibration.