The AquaMax Eco Expert 12v watercourse pumps. These pumps have efficient motors and operate on 12v power, making them a great choice for use in natural pools, swimming ponds, or public spaces. With their impressive flow rates, they can be used for medium to large watercourses, and even pump-fed drum filter systems.
 
The accompanying transformer, made of high-quality stainless steel, is built in-house by Oase to withstand outdoor conditions. It is also EGC-compatible through the use of the Oase FM Master - EGC, allowing the pump to be electronically dimmed for the desired flow rate. The stainless steel filter basket ensures that particles larger than 11mm do not enter the pump and harm the mechanism when used in a submerged application. Any smaller particles can be drawn through the pump without causing damage. The basket filter can also be removed to access the threaded inlet, which can be used for a hose connection, enabling the pump to be dry-installed outside of the pool or pond.
 
These pumps can be installed submerged underwater or dry-mounted. The inlet thread size is 2" BSP - male, and the outlet thread size is 2" BSP - male. The hose connection size is 38mm/50mm (1½" / 2"). The input voltage to the transformer is 240v, while the output voltage from the transformer to the pump is 12v.
 
Here are the specifications for the AquaMax Eco Expert watercourse pumps:
 
AquaMax Eco Expert 20000 watercourse pump - 12v 
Dimensions: Length - 490mm, Width - 240mm, Height - 210mm
Max. flow rate – 20,000 l/h
Max. head height - 4.6m
The input voltage to the transformer - 240v
Suitable for swim pond installation
 
AquaMax Eco Expert 27000 watercourse pump - 12v
Dimensions: Length - 540mm, Width - 250mm, Height - 220mm 
Max. flow rate – 27,000 l/h
Max. head height - 4.6m
The input voltage to the transformer - 240v
Suitable for swim pond installation