looking to set up a test for a rotary valve using a non-positive displacement pump.
looking to set up a test for a rotary valve using a non-positive displacement pump.
(OP)
Hello,
I am looking to set up a small test to calculate the performance capabilities of a rotary valve, and modify the part for optimal performance based on the test results. Part of the system will require a pump. I have never really looked into purchasing a pump myself, but I do know what kind of requirements there are for the system. I want it to run in a closed loop if possible, no check valve required ideally. Also, I want to test it while the valve inlet and outlets are subjected to a range of different psi pressures ranging from around 60 or 65 psi, to about 100 psi. I am hoping to just be able to leave it, so that the pressure remains at a steady psi pressure, and I can just leave it over night to run. I don't know if this would effect the choice of parts, but the diameters of the inlets and outlets are around 1.6".
Could anybody recommend what kinds of pumps/lengths of hoses or pipes would be good for this kind of experiment? I was thinking about an impeller pump of some sort, and a non-positive displacement. Any suggestions would be greatly appreciated. I'm pretty new to this stuff, so please excuse me if I sound like I don't know what I'm talking about because I don't really haha. Anyways, thanks!
I am looking to set up a small test to calculate the performance capabilities of a rotary valve, and modify the part for optimal performance based on the test results. Part of the system will require a pump. I have never really looked into purchasing a pump myself, but I do know what kind of requirements there are for the system. I want it to run in a closed loop if possible, no check valve required ideally. Also, I want to test it while the valve inlet and outlets are subjected to a range of different psi pressures ranging from around 60 or 65 psi, to about 100 psi. I am hoping to just be able to leave it, so that the pressure remains at a steady psi pressure, and I can just leave it over night to run. I don't know if this would effect the choice of parts, but the diameters of the inlets and outlets are around 1.6".
Could anybody recommend what kinds of pumps/lengths of hoses or pipes would be good for this kind of experiment? I was thinking about an impeller pump of some sort, and a non-positive displacement. Any suggestions would be greatly appreciated. I'm pretty new to this stuff, so please excuse me if I sound like I don't know what I'm talking about because I don't really haha. Anyways, thanks!





RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
I think you're probably better off using some sort of accumulator and dumping your output via a control valve into a sump tank and then pumping it from there back into your accumulator which would allow you to vary the pressure inlet and out let quite easily. This would need a PD pump really with a pressure relief back to the same sump to allow pressure ratios of 60 to 100 psi, or you could get a variable speed pump to vary the pressure, especially if your flow is a regular flow, not on/off.
1 gallon a minute is fairly small - you're into lab type and injection pump sizes here.
If you've got any sort of concept sketched out, post it - it all adds to the info which is in your head, but not ours.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
However if the pump is not pumping for more than about 20% of the time and for more than 20-30 seconds, it won't like it and ou need to allow for some sort of minimum flow bypass.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
RE: looking to set up a test for a rotary valve using a non-positive displacement pump.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way