Dear Maeve Hall, There are ...

Dear Maeve Hall,

There are two types of three-way valves used in the industry: Mixing Valves and Diverting Valves.  In order to prevent any misunderstanding due to terminology, we will consider mixing valves to have two inlets and one outlet, and diverting valves to have one inlet and two outlets.Many people will call all three-way valves mixing valves.  

Three-way valves can also be referred to as bypass valves, constant flow valves, and many other terms.

These valves are just like geyser cold & hot water mixing but for hardness control two valves are in and common outlet valve with sensor. This sensor guided the two inputs for maintaining hardness. YD and YS three-way cage-guided valves are designed for throttling or on/off service, and are available in balanced and unbalanced constructions. The YD valve is used in general converging and diverging service. The YS valve is used in general converging service.

Fisher YD and YS valves are available for a wide range of applications, including sulfide and chloride stress-cracking environments common to the oil and gas production industries.Device for water hardness monitoring with parameterizable threshold value between 0.25% and 10% soft water hardness in reference to 100% raw water hardness, DIP switches for parametrizing and LEDs for displaying of alarms and status.

Regards,

Prem Baboo