Your supplier of high pressure laboratory instruments

Your supplier of high pressure laboratory instruments

ABPR-series Automated back pressure regulator


The ABPR-series is a state–of–the–art automated back pressure regulator for single and multi-phase fluids. It allows stable pressure control up to 20,000 psi.  The ABPR consists of a motor driven piston pump, a high accuracy pressure transducer and a dome loaded valve mounted beside the pump cylinder. The valve consists of two chambers separated by a piston with a high-strength stainless steel needle and a reinforced PEEK seat on the lower side. The lower chamber pressure is the same as the process fluid’s, while the upper chamber pressure is regulated by a high accuracy motor driven piston pump, containing nitrogen gas.The BPR acts a comparator. When the dome pressure is higher than the process pressure, the needle shuts the BPR outlet allowing the pressure to build up. Conversely, when the process pressure exceeds the dome pressure, the needle retracts so that the excess process fluid can flow outwards, therefore reducing the system pressure. Consequently, from these oscillations, a highly reliable pressure regulation is attained. By means of an Ethernet connection and a dedicated software, the ABPR can easily be programmed to perform elaborated pressure maintenance schedules.


Maximum pressure range

10,000 / 20,000 psi

Flow rate

0.0001 to 30 ml/min

Wetted materials

Stainless Steel / Hastelloy


ambient to 150°C (300F)

Type of fluids

Gas, liquid, supercritical fluids

Nitrogen gas pressure requirement

1,000 psi ( 5,000 psi for 20,000 psi)

Power supply requirement

110-220 VAC, 50/60 Hz

Pressure control interface




Extremely fast response to system pressure fluctuations

Stable pressure control over the entire flow range

Accurate control even during multiphase flow

Corrosion and chemical resistant

Pressure control via Ethernet communication port


Une réalisation