Title: Motorventiler fyrrom - VQE DN65-150.pdf
is a safety function with a rapid stroke movement, ∆ps can be greater than ∆pmax or ∆pv. The disruptive flow effects that arise here are quickly passed through and are of minor importance in this mode of operation. For 3-way valves, the values only apply to the control passage. ∆pstat: Line pressure behind the valve. This essentially corresponds to the idle pressure when the pump is switched off, caused for example by the fluid level in the system, increased pressure due to pressure tanks, steam pressure, etc. For valves that close with pressure, the static pressure plus the pump pressure are used.