sira engineering and solutions
We can discuss for hours the inefficiencies of an aged pneumatic control system, and the strategy to upgrade or refurbish a pneumatic system, but there are some cost savings. The Valve and valve actuators may have some life still left, especially the larger sizes. Given the cost of replacing a 60mm two vales and actuator, including labour is in the vicinity $3000 to $5000, if you have 10 or 20 of these valves on site it can add up to a significant sum in your budget. Instead we can implement an “E to P” device, which converts an electric signal (form your new BMS) to a pneumatic signal to operate the valve. In some regards it does defeats the purpose of an upgrade, as the inaccuracy of the pneumatic device and running a compressor is energy inefficient, however, over the passage of time, the pneumatic actuators are replaced with digital electric actuators and valves (if required).