Lawler Manufacturing Company produces high-low thermostatic mixing valves and thermostatic mixing valves. The company's standard thermostatic mixing valves are ASSE 1017 approved, and used to control water temperatures for small, medium, and large capacity applications. The valves feature flow rates of .5 to 25 GPM; or 25, 50, 80, 125, 150 or 200 GPM - depending on series.