Liquid Pump Applications
The Equilibar® back pressure regulator offers many advantages for liquid pressure control in the industrial environment.
The elegance and simplicity of the device’s design make it highly suitable for corrosive or sanitary applications.
Its unparalleled precision and ultra fast response time make it highly suitable for closed-loop process control systems by utilizing an electro-pneumatic regulator.
Pump Pressure Control
Raising Pump Discharge Pressure
Often centrifugal pumps cannot be used to stop the flow of fluid because of high supply head pressures. In other applications, VFD drives (variable frequency drives)cannot control the pump to low discharge flow rates because the output pressure of the pump is too low.
In these cases and Equilibar back pressure regulator is used to raise the pump’s output head to always exceed its supply head.
Precision Control with Closed Loop Control
( Electro-Pneumatic Regulator w/ External Feedback)
For most applications, the Equilibar is precise enough to be used with a simple set-point pressure input. However, for some automation applications, it is useful to have closed loop control using an external pressure transmitter. By using an electronic pressure regulator (E/P, I/P) with external feedback, it is possible to match the reading of your process pressure transmitter exactly to your desired set-point.
The Equilibar provides numerous benefits over traditional control valves in these closed-loop applications. Such benefits include extremely wide flow range, ultra fast reaction times, and ease of PID tuning.
Automatic Vessel Level Control
The precision and simplicity of the Equilibar make it ideal to control the level in vessels and baths. For example, a 60 inch aqueous level could easily be achieved from a batch control recipe by sending a 2.2 psig / reference signal to the Equilibar. This provides a particularly elegant solution for automatic bath level control system where persistent water inflows are present.