Overview - Mankenberg Rp 824 Originalbetriebsanleitung

Original operating manual
pilot-operated pressure regulators RP 824

5 Overview

D1 Time response of the control layout
D2 Opening speed of the main valve
D3 Opening speed of the main valve
The pressure control valve consists of main valve and a pilot valve for upstream pressure control as well as a
throttle block with strainer and integrated throttle valves.
When depressurized, the main valve is closed by a pre-tensioned pressure spring.
During commissioning, the fluid enters the inlet side of the main valve and via throttle D3 into the control
chamber and via throttle D2 into the regulating chamber of the main valve.
Closed position: If the inlet pressure is below the set value, the pilot valve is held closed by its spring. The
control pressure in the regulating chamber of the main valve corresponds to the inlet pressure. The main valve
is closed by the spring.
Control position: When the inlet pressure has reached the set value, the pilot valve opens slightly and control
fluid flows to the valve outlet. The restrictor D1 will cause the control pressure to drop. The piston will move into
a position in which the opening and closing forces are in balance.
Open position: If the inlet pressure exceeds the set value, the pilot valve opens completely. More control fluid
flows off, causing the differential pressure of throttle D1 to increase. The pressure in the regulating chamber
drops. The upstream pressure overcomes the control pressure and closing spring and opens the valve.
The opening speed of the main valve can be influenced by the adjustable damping throttles D2 and D3. The
timing behavior of the entire control system is influenced by the control throttle D1.
RP 824-4.X.231 Issue 17.11.2023
Pilot valve
Throttle unit
Throttle
Non-return
valve
Strainer
Main valve
10
www.mankenberg.com