FDO8 Sanitary Back Pressure Regulator - Precision Back Pressure Regulators and more

FDO8 Sanitary Back Pressure Regulator

Port Sizes:
Typical Pressure Ranges:
0 - 1 in WC0 - 28 in WC0 - 5 psi0 - 10 psi
0 - 20 psi0 - 30 psi0 - 60 psi0 - 100 psi
0 - 150 psi
Body Material (Standard):
Stainless Steel 316/316L
Body Material (Optional):
Hastelloy C276, Custom
Max CV:
Key Applications:

Contact Us

  • If multiple fluids or phases, list all.
  • This field is for validation purposes and should be left unchanged.
Product Description
FDO8 Sanitary Back Pressure Regulator

FDO8 Sanitary Back Pressure Regulator

The FDO8 is a 1″ sanitary back pressure regulator designed for liquid pressure control in the biopharma and sanitary processes. The compact design facilitates a simple process layout.

The FD Series back pressure regulator family is specifically designed as a sanitary regulator for use in biopharma, food, and other applications where there are surface finish, clean-in-place, drainability, or USP class VI material requirements.

Like our other Equilibar® back pressure regulators, the FD Series features ultra sensitive diaphragm-operated back pressure technology capable of controlling pressure with high precision over a wide range of flows. The pilot-controlled, dome loaded design will control the system pressure in a precise 1 to 1 relationship with the pressure applied to the dome. This dome pilot pressure may be provided by a manually adjustable spring loaded regulator or by an electronic pressure regulator for computer control.

The flexible membrane diaphragm is the only moving part. This membrane instantly responds to changes in the system flow rate to accurately maintain the pressure at the desired set point. The FD series is the most accurate and highest resolution sanitary back pressure regulator on the market. The simple design allows for extremely fast disassembly and field repair using low cost rebuild kits.

Contact an application engineer to determine if the FD Series regulator is suited for your specific requirements.

FDO8 Sanitary Back Pressure Regulator

FDO8 Sanitary Back Pressure Regulator

How Equilibar Back Pressure Regulator Works

Control Valve with Wide Flow Rate Range

FDO8 Sanitary Back Pressure Regulator

FDO8 Sanitary Back Pressure Regulator

Additional Specs
FDO8 Sanitary Back Pressure Regulator

FDO8 Sanitary Back Pressure Regulator


14.2 lbs (6.44 kg)


dimensional sketch of Equilibar FD Sanitary pressure regulator


Dim A: 8.1 in (204 mm)
Dim A’: 5.9 in (151 mm)
Dim B: 2.4 in (61 mm)



Tri-Clamp; Tube Stub

How It Works

Related Products

Equilibar News

prototype electrolyzer for oxygen

Generating oxygen in space: case study highlights Equilibar’s role in research

For space exploration, the ability to generate enough oxygen for crew members is of primary importance. On board the International Space Station, an Oxygen Generator Assembly uses flow cell electrolysis to make oxygen from water using a flowing water electrolyzer.  Flow cell electrolysis is a common way to facilitate a continuous electrochemical reaction while separating Read More

Read More