Reducing valves can limit pressure levels by restricting flow through a portion of a hydraulic system. In a normally open two-port unit, the reducing valve receives the signal from its low ...

vpdd = Δp (qmax) Δp (qmin) where: vpdd=valve pressure drop decay Δp (qmax)=valve pressure drop at maximun flow Δp (qmin)=valve pressure drop at minimun flow Using the vpdd calculation, the control ...

Low recovery valves (such as globe valves) generate a much less pronounced pressure dip as the flow passes through, so cavitation is reduced. Special anticavitation trims (figure 5) can reduce the ...