Clack’s WS1.5 Twin Valve is a single control head designed for operation with two tanks. When one tank is in service, the other is placed either in standby or is regenerating. This allows for a continuous supply of soft water.

It is designed for residential and commercial applications requiring flow rates up to 12.3 m³/h and it has a backwash ability capable of servicing up to 24″ diameter tanks.