This is one of the most common types of valves, widely used in every industry which act as an on/off switch to either start or stop the flow. We offer a variety of gate valves including screwed, union, bolted-bonnet, welded-bonnet & pressure-seal. Turning the wheel, controls the flow of the liquids and gases by moving the gate up and down. Although fluid regulation is one of the functions, it not recommended as its main purpose is to fully open or fully close the flow.