FD Series
Excellent Stability Over A Wide Flow Range; Smooth Computer Automation; Precision Pressure or Automated Flow Control
The 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.
Equilibar® FD Series 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.
Unsurpassed pressure control performance – Traditional back pressure regulators use springs to gradually open up as the overpressure is used to compress the spring. This often results in significant inlet pressure loss with increases in process flow. The FD Series features ultra-sensitive diaphragm-operated back pressure technology capable of controlling pressure with high precision over a wide range of flows. They fully open in less than 1% overpressure in most applications.
Simple compact design – The FD sanitary regulators are easy to disassemble for maintenance, reassemble, and return to use quickly and easily. The compact design facilitates a simple process layout.
CIP/SIP Compatibility – The FD Series are made of SS316L stainless steel and USP Class VI diaphragms. The design is compatible with temperatures up to 275°F (135°C) experienced during steam sterilization, and the valve’s wide working flow range allows one FD size to effectively control during high flow CIP rates as well as very low flow dosing rates.
Smooth computer automation – The FD Series responds instantaneously to changes in process flow or setpoint to main the desired inlet pressure. Because of its capacity to control within milliseconds, the FD Series is a perfect match for computer automated control. Paired with an electronic pilot regulator, the FD regulator may be connected to the process control system, and it is ready for automation.
Pressure control or flow control: The FD valve is versatile and can be used for pressure control or as an automated flow control valve.
FD02
Port Size: 1/4″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-6 to 0.2
Body Material: SS316L; Hastelloy C; Custom
FD03
Port Size: 3/8″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-6 to 0.6
Body Material: SS316L; Hastelloy C; Custom
FD04
Port Size: 1/2″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-6 to 1.0
Body Material: SS316L; Hastelloy C; Custom
FD06
Port Size: 3/4″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-5 to 4.0
Body Material: SS316L; Hastelloy C; Custom
FD08
Port Size: 1″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-5 to 8.0
Body Material: SS316L; Hastelloy C; Custom
FD012
Port Size: 1-1/2″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-4 to 12
Body Material: SS316L; Hastelloy C; Custom
FD016
Port Size: 2″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-4 to 19
Body Material: SS316L; Hastelloy C; Custom
FD024
Port Size: 3″
Max Pressure: 150 psig/10 bar(g)
Cv Range: 1E-3 to 36
Body Material: SS316L; Hastelloy C; Custom
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