On Sun, 21 Oct 2007 19:40:01 CST, "Bill Stock"
wrote:

I put together the filters today, two 3" bulkheads to Join Barrel A to
Barrel B and two 2" bulkheads to drain Barrel A and Barrel B. I still have
to put the 3" inflow bulkhead in Barrel A.

When I first started filling, only the 2"bulkhead in barrel A leaked, then
the 2 3" bulkheads started to drip. I suspect the weight of the water in the
barrels put some pressure on the 3" bulkheads. The 3" bulkheads almost
stopped leaking, but the one 2" bulkhead has a steady stream.

I think I'll disassemble the 2" bulkhead, as there almost seems to be a
physical defect (trapped plastic or cracked gasket), but what's the best
overall approach? Silicon on the Flange/Gasket side or Silicon on the
outside? All the bulkheads are nut in. The 2" bulkheads probably need
tightened a bit more, but the nuts are a little thin.

I just found out about Uniseals and they have some appeal for joining
a radiused surface with a tube. The hole is cut with a hole saw,
which helps to keep the hole round, or to the shape of what is going
into the hole. I haven't tried them yet, but I have a couple 4"
waiting to be put into service.

http://www.aquaticeco.com/index.cfm/...etail/iid/8600

Regards,

Hal
--
Hal Middle Georgia, Zone 8
http://tinyurl.com/2fxzcb