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  1. Leonardop318

    Pressure pump selection.

    Wouldn't that (installing the fill line at the lowest point) require external pumping to get the fluid to the highest point? or just turning on the system pump would do the job? (it's a screw pump btw) Getting a regular air release valve rated for 80 bar has already proved difficult, isn't it...
  2. Leonardop318

    Pressure pump selection.

    Well, I saw some systems with accumulators that used the NRV and thought it may be necessary but was hoping it was not. Ok, let me see if I understand all this. First. When you say pressurization loop you mean the accumulator, right? I put it there trying to make sure the pressure in both...
  3. Leonardop318

    Pressure pump selection.

    Hi everyone, Sorry to bother you again with the same thing but I still have some questions. I decided to use the bladder accumulator as LittleInch and hydtools suggested. By doing this would I need to use a check valve as shown in the image below to avoid flow return? Besides, the pump I'm...
  4. Leonardop318

    Pressure pump selection.

    Wow, thanks hydtools that's really helpful.
  5. Leonardop318

    Pressure pump selection.

    Oh, thanks, I think I get it and sounds pretty interesting. Could you tell me where can I find a cylinder suitable for the job?, or would I have to design it? if so what would it need? Do you have any thoughts about the HX? Thanks again.
  6. Leonardop318

    Pressure pump selection.

    The volume would be around 5 liters. I'm not sure if I understand this, so by doing this I would add air/gas to the fluid? what I'm trying to measure is density, so I think this wouldn't be a good idea (please correct me if I'm wrong). I would like to know more about it though, can you tell me...
  7. Leonardop318

    Pressure pump selection.

    Do you mean as the second pump or as the main one?
  8. Leonardop318

    Pressure pump selection.

    I was initially going to use water, but I couldn't find a pump that fit the system necessities, and I'm still trying to decide what liquid I could use. I'd say no hydraulic oil though.
  9. Leonardop318

    Pressure pump selection.

    Hi everyone, I'm working on a project where a have to design a closed-loop calibration rig that has to work like this: 1. Circulate (1-2m3/h) a fluid at 20°C and 10 bar. 2. Take the readings from the meters. 3. Raise pressure to 30bar, take readings, and then to 50 and 80 bar 4. Raise...
  10. Leonardop318

    High pressure loop

    I thought I could use a regular plunger pump but as I said above I read they shouldn't be used for high-pressure loops, is it different for multi-stage ones? I don't seem to find a gear pump suitable for water, do you know where I could find one? and what kind of pump would you suggest as a...
  11. Leonardop318

    High pressure loop

    I'm sorry, I'm pretty bad at explaining myself so I'll try my best. The loop will be vertical, it will have an elevation change (around 1-1.5m). the idea is to circulate a fluid through it at 20°C and 10bar, take the readings I need from the meter I'm calibrating, raise the pressure to 30bar...
  12. Leonardop318

    High pressure loop

    Sorry I meant flow rate, not flow range. What I meant is that it can work with a flow rate of 0,7m3/h or 17m3/h or anywhere between them, not in the whole range between them. The fluid is water so between 0.4 and 1cP depending on temperature. Well I checked gear, lobe and screw pumps
  13. Leonardop318

    High pressure loop

    Thanks for your answers guys, About the pump I was considering a PD pump but I read they had problems with low-viscosity fluids, maybe there's a type of PD pump I didn't think of. As for the valve, I couldn't find a pressure control valve with the range I need (10-80bar), but I managed to find...
  14. Leonardop318

    High pressure loop

    Hi everyone I'm working on a project where I have to design a closed-loop calibration rig. It has to circulate a fluid (water) through it and I need to be able to raise the pressure in steps (10 bar, 30 bar, 50 bar, 80 bar.), I was told that I could do that with a back pressure valve but I'm...

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