Keeping "safety in design" ...

Keeping "safety in design" principals foremost, it is better to avoid a control valve and use a multi-stage orifice. This avoids the hazards that can arise if the the valve is operated incorrectly. Typically, there is low pressure pipework after this point so there is a serious "loss of containment" hazard if the discharge flow/pressure is too high. 

Given the fluid specification, connection details, flow rate and required pressure drop, a reputable supplier (e.g. https://www.rototherm.co.uk/pdfs/104.pdf ) will be able to size a multistage orifice for you.

I trust this is of assistance. 

H