Heavy duty bulkhead (schedule 80) question.

[Green_Lionfish]

I am setting up a 180g. My drain hole and sump holes have 3" holes. I was planning to use the heavy duty bulkhead (schedule 80). After further research (according to bulkreefsupply website), a regular 2" bulkhead has 2.83" installation hole. For 2" schedule 80 bulkhead has 3.18" installation hole.

The 1.5" schedule 80 has 2.51" installation hole. Is this too small and might be leaking as it's basically .25" gap around the hole? Should I just go with the 2" regular bulkhead?

Thanks in advance.

 

[cherubfish pair]

The sch 80 1.5" will leak all over the place. The sch 40 2" is pushing it. You might think about reaming out the hole for a sch 80 2".

 

[Steve175]

Yep. If acryllic, buy a hole saw and redrill for the Sch 80 2". Drill a hole in a piece of plywood with the hole saw first and then fix it to the tank to use as a guide. Center the plywood hole over the small existing hole and drill away. If glass = screwed IMO.

 

[thegrun]

Yep. If acryllic, buy a hole saw and redrill for the Sch 80 2". Drill a hole in a piece of plywood with the hole saw first and then fix it to the tank to use as a guide. Center the plywood hole over the small existing hole and drill away. If glass = screwed IMO.

You can drill a larger hole in glass also if you use a drill press. You need to put a piece of tape on the back side of the glass to hold in the water, center the new hole over the old one, build a dam from plumbers putty, fill it with water and drill away.

 

[Green_Lionfish]

Thank you for your suggestions everyone. This is not a good news. Is the regular 2" bulkhead going to leak though? there is gap, but not much.

 

[Jeff000]

Buy different bulkheads.

My 2" sch40 bulkheads are snug in a 3" hole.

 

[Green_Lionfish]

Buy different bulkheads.

My 2" sch40 bulkheads are snug in a 3" hole.

Hey Jeff, that's what I was looking around. I actually went to marinedepot, and it says that the hole installation is 3". Phewwwwssss that makes me feel better