Equilibar® Back Pressure Regulator FD-Series
- TFF for Perfusion or Downstream filtration
- Buffer dilution
- Chromatography – Upstream of Column
- Chromatography –Downstream of Column
- Filling Applications
- Blanketing, Gas Overlay Vent Valve
- Pulsation Dampening in Sanitary Process Systems
ASME BPE Tri-Clamp
FDO2 model (1/4”): 1E-6 – 0.35
FDO4 model (½”): 1E-6 – 1.0
FDO6 model (¾”): 1E-5 – 4.0
FDO8 model (1”): 1E-5 – 8.0
FDO12 model (1.5”): 1E-4 – 12
FDO16 model (2”): 1E-4 – 19
FDO24 model (3”): 1E-3 - 36
The maximum allowable working temperature (MAWT) is diaphragm dependent, typically 135°C for biopharma applications and 150°C for other applications.
Maximum pressure: 10 barg (150 psig) standard, other available on request.
Depending on the pilot valve range, but no more than the maximum allowable pressure.
SS316L
Hastelloy C & Other
PTFE (USP Class VI)
Jorlon™ (Enhanced PTFE USP Class VI)
EPDM (USP Class VI)
FKM Flouroelastomer
Buna-N (Nitrile)
Glass Reinforced PTFE
Other (Consult Factory)
0.5 µm (20 Ra) finish for all wetted surfaces
N/A (Equilibar valves does not have seat)
SIMPLE COMPACT DESIGN
With only one moving part, the FD regulators are easy to disassemble for maintenance, reassemble, and return to use quickly and easily. The compact design facilitates a simple process layout.
EXCELLENT STABILITY OVER A WIDE FLOW RANGE
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 low. Equilibar regulators feature ultra-sensitive diaphragm-operated back pressure technology capable of controlling pressure with high precision over a wide range of flows. It fully opens in less than 1% overpressure in most applications. The stability of the Equilibar regulator is unmatched in the industry. The graph to the right shows an example of the consistent performance of a 3/4” FD regulator with water.
Traditional back pressure regulators set the upstream pressure with a spring. These designs utilize sliding seals and other moving parts that can introduce hysteresis and other undesired effects into a process. The Equilibar® back pressure regulator uses a thin, supple diaphragm as the only moving part. This allows frictionless operation without cracking pressure or hysteresis. The accuracy of the Equilibar® back pressure regulator is determined by the accuracy of the pilot setpoint.
Description
Sanitary back pressure valves are specifically designed for applications requiring hygienic processing, such as those in biopharmaceutical and personal care products, wherever is needed to maintain a constant upstream pressure. The American Society of Mechanical Engineers (ASME) has a special body of standards called Bioprocessing Equipment standards (BPE) pertaining to equipment used in these sanitary industries. Sanitary valves use design criteria outlined by BPE, making them different from standard industrial valves in material and construction. Sanitary valves must be made of SS316L and Class VI polymers, have a crevice-free flow path, and have easy drain-ability to allow thorough sterilization and cleaning and to prevent contamination.
The Equilibar® FD Series sanitary valves are machined from stainless steel or Hastelloy and are suitable for use in industries such as personal care products, food and beverage and pharmaceutical manufacturing. Equilibar sanitary back pressure regulators can be used for pressure control or automated flow control operations.
Performance advantages: 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. Equilibar® regulators feature 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.
CIP/SIP: Equilibar® FD Series can be cleaned in either the forward or reverse flow direction. Its design is compatible with temperatures up to 135°C experienced during steam sterilization. Reference pressure must be disengaged during the cleaning process to allow full flow through the valve.