Brass, Stainless and Plastic 2/2 way normally closed valves require power to open that are direct acting or zero rated will operated from vacuum up to their maximum working pressure.

Brass, Stainless and Plastic 2/2 way normally closed valves require power to open that are pressure assisted require a minimum pressure difference from inlet to outlet operate, typically 0.5 Bar (7psi) up to their maximum working pressure.

Brass, Stainless and Plastic 2/2 way normally open valves require power to close that are direct acting or zero rated will operated from vacuum up to their maximum working pressure.

Brass, Stainless and Plastic 2/2 way normally open valves require power to close that are pressure assisted require a minimum pressure difference from inlet to outlet up to their maximum working pressure.

3/2 way solenoid valves for diverting flow. 3/2 Failsafe Closed - inlet closed outlet open to exhaust, power on inlet opens to outlet and exhaust closes. 3/2 Failsafe Open - inlet open to outlet & exhaust is closed, power on - inlet closed, outlet opens to exhaust. 3/2 Universal - flow in any direction can be used as failsafe closed, open or for diverting flow.

5 port 2 position single acting (mono stable) solenoid 0r pneumatic valve. Example: Actuation cylinder will fully extend, actuation off cylinder fully retracts (or visa versa).

5 port 2 position double acting (bi stable) Solenoid Valve. 5/2 way double acting - Example: Actuate one side of valve Cylinder fully extends - Actuation off cylinder stays put, Actuate other side of valve cylinder fully retracts - actuation off cylinder stays put.

5 port 3 position double acting (Bi stable) Pneumatic or Solenoid Valve. Example: Actuate one side cylinder extends and can be stopped mid position with actuation or power off. Actuate other side cylinder will retract and can be stopped mid position if actuation / power is removed. Actuation off or Power off cylinder stays in position even mid position. An addition of speed controller into air line will slow cylinder speed.

Latching solenoid valves require a single ~20 mSecond electrical power pulse to open and the valve will stay open, to close reverse the electrical polarity (swap +ve and -ve supply) and and apply a short electrical power pulse to close and the valve will remain closed. Reverse the polarity again and repeat the sequence. Ideal for energy saving and safety.