Automatic recirculation valve was used to prevent the damage which comes from the super heat, huge noise, unstable status and cavitation erosion when the centrifugal pump works in the lower workload. The bypass will start to work automatically to ensure the minimum flow rate when the main flow comes to the preconcerted value

Control valves are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to signals received from controllers that compare a "set point" to a "process variable" whose value is provided by sensors that monitor changes in process conditions.

Datian Valve specializes in the design and manufacture of ball Valves, gate valves, globe valves and check valves in carbon steel and stainless steel for the oil, gas, chemical, petrochemical, pipeline and water Industries. The Management of the company has 20 years experience in the Valve Industry.