The DOROT pressure reducing valves Series
DPR, DPR-F are of the balanced seat type.
The inlet pressure, when acting on the two openings A and B
with the same section, is compensated, and does not exert
any force on the pin-plug system when the degree
of valve opening changes.
Two forces act on the diaphragm: The outlet pressure
creates a force that tends to close the plug, and is
topposed by the spring mechanical force that tends to
open the plug.
This results in the pressure reducing valve acting like a
balanced seat type, where the outlet pressure
almost- unaffected by variations in inlet pressure.
