gregE It may be hard to tell but it reaches 9 bar
Yup watch the video, nice smooth gradual ramp, peak at 9 bar, everything perfect, just as it should be.
So there’s a few things you need to realise about flow control, it’s actually a complicated subject so I will only cover some basics for now.. Without it:
- The expansion valve opens when the pressure reaches 9 bar.
- Water flows thru puck
- gradually puck erodes, pressure tries to drop, expansion valve allows less back to tank and flow increases to maintain pressure
- as end of shot approaches even this may not be enough and pressure could drop.
Now lets look at the same series of events with flow control while remembering you are reading pressure at the puck.
- The expansion valve opens when the pressure reaches 9 bar.
- Water flows thru puck, but at a reduced rate dictated by postion of flow control
- gradually puck erodes, pressure tries to drop, expansion valve control is the same, as far as it’s concerned nothing has changed. Flow control is not moved, so pressure drops, if flow control is moved, pressure can be maintained
- as end of shot approaches even this may not be enough and pressure could drop.
The important caveat as well is that even the the Minima has a nice smooth soft ramp to pressure, part of the reason it produces a superb shot, using flow control to restrict flow is going to allow water to perfuse the puck, limiting hydraulic compression and make the puck more permeable from the start!
