LX5151A can be directly installed through long bolts and coplanar flanges and differential pressure transmitters. The center distance of the flange five valve group instrument interface (outlet) is 54mm x 41.3mm, which is connected directly to the high and low pressure interface of the differential pressure transmitter, and the seal ring is sealed by the bolt pressure purple. The five valve group is a combination of high, low pressure valves, balance valves and two check (discharge) valves.