Danger Den DD12V-D4 External Water Pump
 

Overall, the DD12V-D4 water pump is a very powerful pump. The maximum
flow rate of the DD12V-D4 is able to reach up to 1200L/h. I have tested
this water pump by using the Zalman Reserator 1. The performance is very
good as compare with the integrated pump. During the operation of this
pump, it was very silent too. This DD12V-D4 from Danger Den is a medium
size and very good external water pump for water cooling usage.
Link :
http://www.techniz.co.uk/modules.php...content&id=252