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Originally Posted by kimandsally
In all the tests above using the MCP 350 was the 3/8" fittings and tube used also the 3/8" barbs on the Storm G4 as that is what I am using at the moment and I'm looking to see if it is worth me going to 1/2" what is the likely improvement by going to 1/2"?
And then this is a noob question, the reservior I'm using is the Tank-O-Matic External Reservoir, the fittings are about 3/8" so if I were to mod the pump leaving the output @3/8" and the inlet to 1/2" wouldn't that make a flow restriction?
What I don't understand is why are the reserviors made with such small bore's? am I missing something?
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No, both the MCP350 tests were conducted with the same 1/2" ID tubing used in all the others. For the MCP350 and MCP350 Modified, I used a 2" long pice of 3/8" ID tube to a 3/8-to-1/2 adapter right out of the pump discharge.
Theoretically opening up the suction port to 1/2" will let the pump "breathe" a little better, but if that is the only change you make to your existing system I couldn't say how much of an affect it would have. Yes, the 3/8" outlet is still a "restriction" but it does not have as much affect being on the discharge.
My guess - many reservoirs are made with relatively small fittings due to the curvature of the reservoir wall and for ease of manufacture.