Are all bulkhead fittings created equal.

[sphelps]

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

Yeah nothing to due with the pressure rating, I like to use the sch20 pipe as it's got a larger inside diameter but it's hard to find. But when it comes to bulkheads you need the larger, coarser thread to achieve higher torque and ultimately a better seal. The thiner bulkheads crack easier and usually don't even have reverse threads. They also have thinner gaskets and a lower tolerance to movement which comes from various forms of maintenance.

[StirCrazy]

Originally Posted by sphelps

Yeah nothing to due with the pressure rating, I like to use the sch20 pipe as it's got a larger inside diameter but it's hard to find. But when it comes to bulkheads you need the larger, coarser thread to achieve higher torque and ultimately a better seal. The thiner bulkheads crack easier and usually don't even have reverse threads. They also have thinner gaskets and a lower tolerance to movement which comes from various forms of maintenance.

I learned a long time ago, if you putting a bulkhead on that you plan on being there for a while, put a thin coat of silicone on both sides of the gasket. handles all kinds of abuse well once that is done, and it is still pretty easy to remove when you have to.

Steve

[rocketlily]

So I answered my own question today. The ABS bulkheads I had were purchased from a very quality aquarium supplier. We were having alot of trouble with them and ended up tearing the tank down to get into the back overflow area to replace them. I checked with another LFS last night and their bulkheads were the same. This morning I drove to a not so local LFS and what a surprise. Their ABS bulkheads are a much superior quality. Thicker seal and locknuts that fits.

So the answer is, no, not all bulkheads are created equal.