Threaded ends should not be connected with cone-shaped male threads and the use of hemp or similar materials should be avoided.
Special attention should be paid to the correct line-up of the installation and to the pipe length.
Tighten the union nut hand tight only and not with any type of wrench.
It is important that the unions are not used to pull the system together.

What's in the box
1 x Torrenti Ball Valve Double Union Bsp PVC 1Inch