Lancaster Flow Automation, LLC is a technology company that manufactures products which control flow in oil and gas fields. Lancaster produces a state of the art choke which is used in field automation. The purpose of a choke is to convert the potential energy of the well into mass flow rate. The Lancaster choke safely and efficiently reduces well bore pressures, so that hydrocarbons can be transported in conventional pipelines. The choke also protects the formation and well perforations from damage due to excessive flow rates. The Lancaster chokes feature some of the lowest operating torque values in the industry.