Complete your set-up with a BWT Besthead Filter Head Kit
A universal filter head with 3/8" external thread (including bypass setting and non-return valve) + connecting hose.
The filter head can be adjusted to one of several blend settings based on the hardness of your water. The blend settings adjust the amount of water run through the ion exchange in ratios of 0/100, 10/90, 25/75, and 40/60. When switching out filter cartridges, the filter head will cut the flow of water to prevent leaks.
Please note: This includes one filter head, you must have the filter (cartridge) for a complete setup.