To connect all the various components of the pool system, there are a number of pipes and valves.
The pipes are usually made of pvc, and do sometimes crack and require replacement. Above ground it is a simple matter to cut out the broken section and join with pvc joiners and pvc glue.
If the crack is below ground, you should get assistance from a plumber or pool expert.
Valves are needed to divert water in different directions, particularly when you want to clean the filter or remove excess water by backwashing to waste.
We do stock most valves you may require, so give us a call.