First you need to define what you actually mean by "turbid". My understanding is that this is a vague description meaning "dirty" or cloudy containing particles.
also the control range, pressure, velocity, valve CV required have a big impact on what is and isn't possible.
Control valves are designed to be throttled so I'm not sure what you mean by "easily throttled"
Once you have fluid with dirt or particles, your choices of control valve start to reduce. You then either need very hard seals or disc edges in something like a butterfly valve, or you need slurry pinch valves like this
In general most types of valve designed for isolation (gate, ball, plug and butterfly to a certain extent, are not good at control and either have a poor control range or suffer wear very rapidly when trying to control with any substantial pressure drop.
Standard globe valves need very hard seats and discs to cope with dirt.
You would be advised to search and look up what they do for slurry as this is probably closer to your requirements.
Try and find a way to not need control valves - use of multiple pumps or VFDs or batch pumping - all much better in the long run.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
