2-way valves can also be used in variable flow systems that experience changes in pressure, temperature, and flow. 2 way valve can increase process efficiencies and lower operating costs by providing operators with the ability to run heating and cooling systems at variable flow rates. Two way valves are used in almost every industry application that requires the regulation of process fluids. This includes the automotive, wood, chemical, food and beverage, power generation, marine, and water treatment/wastewater industries.