Insulating Tubes Should really I style and design a Specific distributed piping program with little holes for vacuuming, or am i able to use an easy pipe to connect with the vacuum pump?Why does the 400BIPA has to be tightened by using a torque of 50Nm and the 300BIPA by using a torque of 30Nm?VIP is favored as a result of its large amount of insul