Check Valves
Fluid flows through the inlet, a small pressure is needed to open the valve seat in this direction.
Shuttle valve
Two positions of the shuttle valve are shown here. When the pressure of the flow on one side.
Two way valves
Two-way valves are also simple two positions ON/OFF valves but actuated by actuators such as solenoid actuators.
Three way valves
These valves have three nodes that’s why named three-way valve and three-way valves.
Four way valves
Four-way valve or three position valves which got three working positions for the actuators to control the flow direction.