Divert valves are used for converging media from two pipes into one (W valve), or for diverting media from one pipe into two pipes (X valve). This divert function is also known as non-slamming divert.
One seal is always used on the one-part valve disk in order to shut-off the pipes from each other (upper – central or lower – central). If the seal fails, the media in the pipes may intermix.
The valve stem has two gaskets, one upper and one lower. Dependent on the valve status, either one or the other of the valve seats is shut while the other is fully open. These valves should always be specified with at least one process connection for ease of maintenance.