Sealing Hole in 9015

[dwiseman]

The 8mm hole on the back of the 9015 what do I fill that with? Does Tunze sell a plug for the hole?

 

[rvitko]

We do not offer a plug, this hole has a purpose, the water forms a seal to force the air up and out through the cup, this eliminates the need for orings or clamps to secure the cup. It has to escape at a certain level. When the in sump set is used it can be plugged but this does accelerate the water exiting the outlet pipe which can lead to microbubbles. It also will affect the operation height requirements to some extent, it reduces the max allowable sump depth.

 

[dwiseman]

Thanks
Not to change the subject but I sent you a PM