The bypass valve is used to regulate the hardness of treated water. The valve adds a small amount of untreated source water to the softened water.

On the Runxin F70B, two regulators are installed at the outlet, oriented towards the front, which allows for precise adjustment of the mounting level.

In addition to its main purpose, the F70B bypass valve can also be used to completely shut off the water supply to the softener. This allows for uninterrupted service.

The Runxin TMF70B valve has quick-disconnect connections, closed with special caps, which allows for quick disconnection or reconnection without the use of special tools.