We sell gate valves which are widely used for all types of applications and are suitable for installation above ground and underground. Sell fluid gate valves designed for services that are fully open or fully closed. This victaulic gate valve is installed in the pipe as an isolation valve, and may not be used as a control valve or regulator. The operation of the gate valve is done by rotating clockwise to close (CTC) or clockwise to open (CTO) the stem.