FD Series
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. They are used in pressure or flow control applications. To learn more about the FD Series Active Damping System, download the brochure.
The 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
Pulsation Dampening Solutions for Sanitary Flow Stability
Enhancing Stability in Biopharmaceutical and Food Processing
Sanitary Tank Blanketing for Precise Low-Pressure Gas Control
Optimizing Inerting in Food and Biopharmaceutical Processing
Minimizing Flow Pulsations in Chromatography Skids
Advancing Pulsation Control with Active Dampening Technology
Optimizing Tank Blanketing in API Pharmaceutical Processing
Key Design Considerations for Inert Gas Blanketing
Optimizing Pressure Control in Disc Stack Centrifuges
Back Pressure Control Using Steriflow Equilibar Sanitary Valves
Optimizing CIP Systems in Biopharmaceutical Manufacturing
FDO Series Sanitary Regulators Improve CIP Cycle
USP Class VI
CRN on some models contact Equilibar for details
The FDO Series ships in 5-10 working days on quantities of 4 or less
This includes the FDO4, FDO6, FDO8, FDO12 and FDO16 models
Contact your local representative for further details
Is the Equilibar FDO Series CIP and SIP capable?
Yes, the FDO is fully CIP and SIP capable. For CIP, the FDO is fully capable of the turbulence required for Clean-in-Place and Rinse and is drainable. With regards to Steam-in-Place, the FDO’s diaphragm material, Jorlon (PTFE), can easily handle the temperature requirements, and is drainable. Download the brochure here.
Does the standard FDO Series back pressure regulator help reduce PD pump pulsation?
Yes, pulsation reduction is integral to the standard FDO design. Typical pulsation reduction is 25%. The upper diaphragm dissipates some of the energy from slugs of fluid moving through the valve from upstream pumps. Peak pulse amplitude pressure is transmitted through the upper diaphragm, which causes a momentary displacement of reference pressure above the diaphragm to the I/P’s (or self-relieving manual regulators) downstream pressure management mechanism. Downstream pulsation is mitigated through the lower diaphragm, which sits on a silicone honeycomb insert (the volume under the diaphragm is vented to atmosphere) which dissipates pump pulsation energy on the downstream side of the valve.
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