The TOG52 series are a tfive way two position toggle control valve. Ideal for controlling small cylinders or pneumatic actuators, simply push the toggle one way to operate it will stay in this position until switched back. Often used for cab mounts for controlling pneumatic butterfly valves in water trucks. M5 or 1/8" BSP threaded pressure and actuator ports with the exhaust ports not threaded. Simple to use, install and maintain.