Level Control Valve Considerations

In my installation, I want to add a level control loop to control the level of condensate in a vessel. A level transmitter is already installed on the vessel; it sends a 4-20 mA signal to DCS. The DCS will control the level in the vessel and sends 4-20 mA signal to the valve. There is no control valve on the vessel, thus I need to choose one. My question is:
What are the parameters and the specifications that I should consider to choose this control valve?

I will appreciate any input