This is smallest rotary vane pump we can supply and it is made by Fluid o tech. The pumping capacity of this pump is 50 L/H and it fairly compact. It has a overall length of 73mm. But you are still able to adjust the pump pressure on the side of the pump. To connect your water lines in and out to the pump you need to have a 3/8 BSP-G fitting. To connect the pump to a motor you will need to have a motor which has a flange with a clamp ring connection. This pump isn't suitable for for a bolted flange motor connection.