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View Full Version : Which side does the Bulkhead O ring go?

asonitez
12/09/2007, 02:42 PM
which side does the Bulkhead O ring go ????? In the tank? or Outside of the tank? I can't remember.
poppin_fresh
12/09/2007, 02:45 PM
IN the tank. I wont do anything on the outside.
mm949
12/09/2007, 04:55 PM
outside...i wont do anything inside.... it really makes no diff.....just make sure the gasket is on the flange side......i find if u ever have to dissassemble the plumbing u wont have to replace the bulkhead....
yellowwatchmen
12/09/2007, 05:34 PM
Mine is in the inside,
Pmolan
12/09/2007, 05:50 PM
If it's not on the inside, water will get through the threads.
virginiadiver69
12/09/2007, 06:37 PM
<a href=showthread.php?s=&postid=11348867#post11348867 target=_blank>Originally posted</a> by mm949
it really makes no diff
It makes a big difference. The gasket ALWAYS goes on wet side.
AquaReeferMan
12/09/2007, 09:28 PM
The o-ring goes on inside part of the tank.
AZDesertRat
12/09/2007, 09:51 PM
OK. Listen up....... It does not make a hill of beans if it is on the inside or outside...AS LONG AS IT IS ON THE FLANGE SIDE, no matter where the flange is. Once again from the top....The gasket ALWAYS goes next to the flange.

Do not use any silicone or tape or libricants as it can cause the gasket to scoot or squeeze out and leak. Tighten hand tight then maybe 1/4 turn more, no more than that. Never support any piping or pumps with a bulkhead, suspend or brace them with something so they do not stress the bulkhead and cause it to leak or crack.
poppin_fresh
12/09/2007, 10:05 PM
ive never seen bulheads with the flange outside the tank... do they make them?
virginiadiver69
12/09/2007, 10:54 PM
Okay then...why would the flange NOT be on the inside of the tank.
AZDesertRat
12/09/2007, 11:19 PM
You can turn it either direction, it does not matter. Space restrictions are one reason. Its not common but I have seen it.
poppin_fresh
12/10/2007, 12:25 PM
Hmmm.. I guess it never occurred to me to use a bulkhead upside down.
raskal311
12/10/2007, 12:29 PM
I agree with AZDesertRat 100% I install bulkheads with the flange on the outside all the time.
BRG
12/10/2007, 01:07 PM
<a href=showthread.php?s=&postid=11350711#post11350711 target=_blank>Originally posted</a> by AZDesertRat
OK. Listen up....... It does not make a hill of beans if it is on the inside or outside...AS LONG AS IT IS ON THE FLANGE SIDE, no matter where the flange is. Once again from the top....The gasket ALWAYS goes next to the flange.

Do not use any silicone or tape or libricants as it can cause the gasket to scoot or squeeze out and leak. Tighten hand tight then maybe 1/4 turn more, no more than that. Never support any piping or pumps with a bulkhead, suspend or brace them with something so they do not stress the bulkhead and cause it to leak or crack.

he can't make it any clearer ...........it goes on the FLANGE SIDE

it does not matter if the flange is on the dry side or the wet side :)

bg
mcrist
12/10/2007, 03:00 PM
I agree...inside or outside as long as it's on the flange side.