Excellent Stability Over A Wide Flow Range; Smooth Computer Automation; Precision Pressure or Automated Flow Control

Equilibar® FD Series Sanitary valves feature Equilibar's novel dome-loaded multiple orifice technology delivering instantaneous control, frictionless operation, and superior precision across an exceptionally wide flow rate range. Dome loaded back pressure regulators are used in pressure or flow control applications. To learn more about the FD Series Active Damping System, download the brochure.

The FD Series dome loaded back pressure regulator valves offer unmatched advantages in sanitary applications such as gradient chromatography, inline conditioning, tangential flow filtration (TFF), transmembrane pressure control (TMP), tank blanketing, and liquid dosing.

For pressure control, simply apply an inert gas pressure to the dome of the valve equal to the desired setpoint and the regulator does the rest. The dome pressure forces a flexible diaphragm down onto a plate of parallel orifices. A rise in inlet pressure lifts the diaphragm up to allow excess pressure to be relieved through the outlet orifices. Conversely, a loss of pressure at the valve inlet causes the diaphragm to be pushed closer to the orifices, restricting flow and rebuilding pressure upstream.

For flow control, connect an electronic pilot regulator and flow meter in a PID loop with the FD valve and it will adjust to control flow. This type of flow control is an excellent choice for buffer dilution requiring varying flow rates to create different buffer pH recipes.