Hi,

I am trying to carry on with my delayed setup and now I am struggling with the this. The bulkhead from the overflow box itself is fine and not leaking after filling the overflow with water for few days.

I filled the aquarium with tap water for leak test and no leaks from the fittings below the bulkhead until i start closing the gate valve (diaphragm valve) then water will start leaking from the joint socket where its connected to the bulkhead. 

I tightened it with hand and did not use excessive force to tight it.

 

I tried again after applying teflon tape to the bulkhead and still seeing drops leaking after I close the gate valve

 

I have recorded a small video to show the point where the water will start leaking 

 

Appreciate your feedback. Not sure what to try next

https://drive.google.com/file/d/1YFsczLUlslWpyAbBYp1CIcwOg4pyPM0s/view?usp=sharing

 

 

 

 

Arent the threads just for the nut pressing against the glass? And then your pipe is supposed to be smaller size and glue on the inside..

Hi Daniel,

The inside is also threaded like pic below. I have disassembled the whole pipe and took a pic 

Semi-weird bulkhead, but I have never used a threaded one. I still believe the outside thread is just for the nut though, the bulkhead is probably meant to host much smaller pipes than the yellow.

Personally I would either replace it, or try and glue a pipe of correct size on the inside past the internal threads.

 

I dislike threaded fittings in general but thats just me..

Understood and thanks for your help.

This aquarium is a complete system from Akvastabil i bought few yeas ago but priorities was changed with a newborn and never started my setup. Now trying to carry on with it whenever there is time ehre and there. Many things I have learnt over the last three years from SVG and R2R and now I kinda regret buying the akvastabil complete system. Anyway, so this bulkhead is akvastabil but I already bought two different bulkhead types during the past years when I was changing my design every couple of months how to plump everything   instead of the akvastabil org design 

I got few tips from facebook group and I will try them. If did not workout, I will use the other ones I bought like this

https://www.aquariumplumbing.co.uk/buy-aquariumplumbing.asp?ID=66&ProdGrp=151