Re: Pressure Drop in Chuck
Without knowing more about the system, it is difficult to say what the problem is.
Where is the pressure being measured? At the chuck cylinder ''A'' or ''B'' line, or on the ''P'' line to the valve?
The valve in the picture is a closed center valve, so ''P'' would show pump relief valve pressure when switching.
Once the valve has shifted, does the pressure remain at 18 or 11 bar?
Is the pressure gauge reading correctly? Measuring against another known good gauge is sometimes required.
Jim Dawson
Sandy, Oregon, USA