Shunt function of instrument pipe fittings

Shunt function of instrument pipe fittings
The flow path of the valve used to cut off and open the medium of instrument pipe fittings is straight through valve, and its flow resistance is small, so it is usually selected as the valve used to cut off and open the medium. Downward closing valve (stop valve, plunger valve) is less used because of its tortuous flow channel and higher flow resistance than other valves. Closed type valve can be selected when higher flow resistance is allowed. According to the need of directional diversion, the valve can have three or more channels. Plug valve and ball valve are more suitable for this purpose, therefore, most of the valves used for directional diversion are selected as one of these valves. But in some cases, other types of valves, as long as two or more valves are properly connected with each other, can also be used for diversion.