Quote:
Originally Posted by banditpowdercoat
Ya, you can reduce the loop pipe diam from what your vertical lift pipe diam is after a T. Just like in drains, you cna go down 1 pipe size when using 2 pipes. So, 2". you can go to 1.75 or 1.5 on a closed loop manifold. Acctually, you can reduce the size after every T in the manifold. As long as they are even on each side of the main inlet T. Remember, your loosing GPH flow in the manifold after every tank outlet, so no need for the whole manifold to be the same size as the inlet. There will be a point in the manifold where the water will acctually be still, where water form the left and rigth sides meet, and basically stop. I did mine with a outlet in the center, where I belive the water will meet, so hopefully to not get stagnent section of the manifold. Weather it worked or not, that remains to be seen
Also, if your pump has a 1.5" outlet, you may be better off to keep the rise pipe form sump to tank that size. Increasing the vertical pipe to larger will add more water in the vertical colum, thus more weight. More weight the pump has to lift, the more head pressure the pump will see, the less GPH it will flow. On Horizontal, and bends, larger is better, but not uphill. Just ask any Firefighter. I'd much rather haul the 1.5" hose up 3 storys than the 2.5"
Just changing the pipe pump outlet pipe to 2" for the bulkhead will be fine, and I think, would be the best bet
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Yeah I do understand the concept of increasing adding weight and pressure but I hear a lot of times that these pumps preform much better when increased by 1/2". The main issue here is that I HAVE to increase to 2" no matter what to go through the bulkhead. I have no choice there. Its just a matter of when. I was going to increase to 2" right away near the outlet and keep the manifold at 2" (still may). Otherwise, I think I will increase to 2" right away and then after the top "t", reduce down to 1.5".
I do understand what you are saying but there was also a specific reason people increase the pipe size on these pumps I just forget why
I know for sure that Mag pumps should always be plumbed with a size bigger pipe. The manufacturer states that themselves.