Separator for a fluid stream and method therein

A separator for separating liquid from a fluid stream including a mixture of gas and liquid, comprising;

• a first vessel including an outlet and an inlet for receiving the fluid stream, said first vessel in fluid communication with a second vessel via a first valve, the second vessel including a liquid outlet, wherein the second vessel is in fluid communication with the liquid outlet via a second valve,
• wherein the first vessel is arranged to enable the liquid from the mixture of gas and liquid to flow into the second vessel;
• and
• wherein in the second valve controls the release of liquid from the second vessel, the first and second valves being pneumatically operated, the pneumatic operation of the first and second valves allowing only one of the first and second valves to be open during operation of the separator;
• wherein the second vessel includes a liquid sensor arranged to detect an upper threshold of liquid and a lower threshold of liquid in the second vessel and wherein the liquid sensor is arranged to close the first valve upon detection of the upper threshold of liquid and the first valve includes a first valve sensor, wherein the first valve sensor is arranged to detect when the first valve is fully closed and send a signal to open the second valve, wherein the liquid sensor is arranged to close the second valve upon detection of the lower threshold of liquid, and
• wherein the lower threshold of liquid is set where the liquid in the second vessel is filled to approximately 5% to approximately 15% of a total volume of the second vessel.