I appreciate your effort and guide me how can I find them.This is a forum where replies come from users and integrators with few, if any, manufacturers. What you are asking for is the kind of information that the manufacturer supplies. Sometimes user manuals will have parts list but fewer and fewer devices do as time goes on (compared to 40 years ago). Many times these kinds of requests are handled through the manufacturer's distribution/rep sales channels.
I usually wait a couple days on posts like these to see if someone somewhere comes up with what is asked for, but I think that there is so little likelihood of getting that kind of information that I'll point you to wherever you got the actuator/valve from or whoever sells Rotork in your area of the globe.