Automated back pressure regulator LEABPR series

The LEABPR 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 LEABPR 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 LEABPR acts a comparator. When the dome pressure is higher than the process pressure, the needle shuts the LEABPR 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 LEABPR can easily be programmed to perform elaborated pressure maintenance schedules.