This is a small DC air pump which works on12V, it is primarily used in aquariums and blood pressure machines.

12V Mini Air Pump Motor for Pet Aquarium Tank Oxygen Circulation

12v Mini Air Pump MotorHatchNHack Cart
This is a small DC air pump which works on12V, it is primarily used in aquariums and blood pressure machines.

12V Mini Air Pump Motor for Pet Aquarium Tank Oxygen Circulation

12v Mini Air Pump MotorHatchNHack Cart
Latching Solenoid Valve , How to use a bi-stable solenoid valve, Solenoid valve applications

Latching Solenoid Valve

Pumps & ValvesAkshay Goyal