The fitting is designed to regulate fluid flow during oil production and provides stepless (smooth) establishment
of the following possible well operation modes:
-bringing an oil well into operation without stopping the supply of liquid to the line by a downhole rod pump (SSH) or an electric circulation pumping unit (ESP);
-establishment of the required operating mode of the well;
-carrying out measurements to determine the gas content in the oil well fluid (determination of the gas factor);
-establishment of the required flow rate (by pressure drop) when pumping liquid into the reservoir in the HDPE system.