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Original operating manual
pilot-operated pressure regulators RP 824
10 Commissioning
D1
Time response of the control layout
D2
Opening speed of the main valve
D3
Opening speed of the main valve
Before leaving the factory the valve has been tested for leaks and correct function. The valve is supplied with its
spring released. During commissioning the inlet side should be slowly opened ensuring that the fluid is carried
away from the outlet side. Pressure surges should be avoided.
To accelerate the filling and bleedin of the control chamber during start up, the throttles D1, D2 and D3 should
be fully opened. To bleed the overflow valve the bleed screws on the attenuator block and valve cover should
be slacked.
Do not remove these screw! Tighten the bleed screws as soon as no more air bubbles escape.
The thottle valves D1, D2 and D3 in the attenuator block are used to adapt the overflow valve to the system
operating conditions.
Basic setting (at the factory):
Control throttle D1 opened approximately 0.5 turns; Attenuation throttle D2, D3 opened approximately 1 turns
NEVER CLOSE THE RESTRICTOR VALVES FULLY!
The valve opens as the inlet pressure increases. Subsequently, the required inlet pressure should be set using
the pilot valve adjusting screw while there is a flow of fluid through the valve.
Tightening the screw increases the outlet pressure; slackening the screws reduces the inlet pressure.
RP 824-4.X.231 Issue 17.11.2023
Pilot valve
Throttle unit
Throttle
Non-return
valve
Strainer
Main valve
17
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