Are all bulkhead fittings created equal.

midgetwaiter · #1 10-27-2008, 05:22 PM

Quote:

Originally Posted by sphelps

You should go with a sch80 with a corse reverse thread.

These are nice of course but have you ever actually seen a sch40 bulkhead fail? It doesn't happen very often, I've never seen it.

Aquattro · #2 10-27-2008, 06:12 PM

Quote:

Originally Posted by midgetwaiter

These are nice of course but have you ever actually seen a sch40 bulkhead fail? It doesn't happen very often, I've never seen it.

sch40 is way more than enough for aquaria applications. J&L sells them, OA probably does, I'm sure lots of reef stores do or can suggest where to get them.

rocketlily · #3 10-27-2008, 06:16 PM

The reason I posted this question is that there seems to be alot of play in the locknut on the bulkhead threads. Most people I work with agree that if you picked up a nut and bolt and there was that much play, you would know that you have the wrong nut.

sphelps · #4 10-27-2008, 06:17 PM

Quote:

Originally Posted by midgetwaiter

These are nice of course but have you ever actually seen a sch40 bulkhead fail? It doesn't happen very often, I've never seen it.

sch40 is OK to, but the cheap bulkheads I was referring to are not sch40, they are thinner and I have seen many fail and what's worse is the nut usually becomes cross-thread and is a real pain to get off. I've replaced many peoples bulkheads and trust me it's not worth it.

StirCrazy · #5 10-30-2008, 11:16 PM

I would use schedual 10 if there was such a thing

sched 40 is even way overkill for what we do. how often do we run 150 PSI on our systems?

almost any bulkhead that fails is from inproper instalation, or a defect in the bulkhead its self, not because it is a cheap one or it is schedual 40.

Steve

brizzo · #6 10-31-2008, 02:26 AM

Schedule 80 bulkheads for the win!!!

Personally I like the idea of overbuilding certain things, and the quality of schedule 80 fittings is amazing. 1/4" rubber gasket versus 1/16" gasket

midgetwaiter · #7 10-31-2008, 05:23 AM

Quote:

Originally Posted by StirCrazy

I would use schedual 10 if there was such a thing

sched 40 is even way overkill for what we do. how often do we run 150 PSI on our systems?

almost any bulkhead that fails is from inproper instalation, or a defect in the bulkhead its self, not because it is a cheap one or it is schedual 40.

Steve

I won't use less than sched40 but not because of the pressure rating. I have used sched20 in the past but if it's something you are going to keep for more than maybe 5 years it gets really brittle. I had an old piece off of my uv I was able to crush just squeezing it in my hand.

StirCrazy · #8 10-31-2008, 01:47 PM

Quote:

Originally Posted by midgetwaiter

I won't use less than sched40 but not because of the pressure rating. I have used sched20 in the past but if it's something you are going to keep for more than maybe 5 years it gets really brittle. I had an old piece off of my uv I was able to crush just squeezing it in my hand.

where did you find sched 20? I would love it for the smaller size. the sched 40 ones will do that also, you can get different materials so they won't or paint them with a UV block..

Steve

midgetwaiter · #9 10-31-2008, 05:58 PM

Quote:

Originally Posted by StirCrazy

where did you find sched 20? I would love it for the smaller size. the sched 40 ones will do that also, you can get different materials so they won't or paint them with a UV block..

Steve

I don't remember, probably the "big box o' junk" at work. I haven't seen any in a long time.

rocketlily · #10 10-31-2008, 02:51 PM

I also would like to know where you buy your bulkheads.

Quote:

Originally Posted by midgetwaiter

I won't use less than sched40 but not because of the pressure rating. I have used sched20 in the past but if it's something you are going to keep for more than maybe 5 years it gets really brittle. I had an old piece off of my uv I was able to crush just squeezing it in my hand.