This Clack WS1 water softener control valve is a great addition to any home with hard water. The control unit is  the Clack WS1 model and is made of durable plastic. It comes in black color and is designed to remove hardness from your water. The filtration method is a water softener controller, which is perfect for those who want to keep their water soft and free from contaminants. With this water softener control, you can ensure that your water is always clean and fresh. It is easy to install and use, and is perfect for those who want to improve their home’s water quality. Whether you’re looking for a water softener control or just want to upgrade your home’s plumbing system, this Clack WS1 water softener control is a great choice. It comes with bypass and tail kit. The tail kits vary and if not specified will come with a 1" male elbow threads as seen in the 3rd picture