The image below shows the pressure control system using a direct acting control valve; it is a pressure reducing station using CSA direct acting pressure reducing valves. On the main line we install a VRCD series reducing valve with a stone trap strainer at the inlet to protect the valve internals, and an isolating valve to allow inspection and maintenance. It is strongly recommended to install a bypass to ensure the water supply while the main line is being maintained, so a smaller VRCD has been installed for this purpose. Two CSA anti water hammer air valves, models AS or RFP, will allow air to be admitted to avoid negative pressures and released in a controlled way during start-up and while the installation is running.
We supply all the components for quick assembly of the system on site, in the sizes selected by our engineering department.