stcreef said:The problem with most threaded bulkheads is that they arent tapered threads like NPT is supposed to be. So getting a good seal requires a descent amount of pipe dope. The other problem with them is that they are prone to cracking when the pipe attaching to it is tightened too much. I will usually put spare bulkhead nuts over the ends to prevent cracking if I have to use them.
MikeNapoli said:I'm sure both work really well you just have to do the proper job. With Slip you need to glue it really well and with the threaded you should used the teflon tape or you can silicone them (I think i've heard of people doing that).
I have slip on all three of my tanks. No leaks, knock on wood.
yuyiboy said:What is NPT??