We have projects with control valves. Sometimes these units have relatively light actuators (in relation to the valve body weight) and other times the actuators may be 3-6 times the valve weight. For larger valves the distance (or arm if you will) between CL of valve/pipe CL and the actuator CG may be as much as 2'. Is there a "best way" to model these types of valves?

Possible choices:
1. Model the valve as shown in the "CII Control Valve"
2. Model the valve normal but add forces representing the actuator weight and moments.

For this particular valve, the valve weight is 412 lbs, the actuator weight is 1480 lbs, and arm is 22".

1 is better, yet to be improved. Note that the actuator is parallel to the line.

Regards,

Hi All,
I am using similar type of valve(Like fig-1), in my case it is gate valve with actuator,Valve weight is 130kg actuator weight is 1300kg and the compression force during valve opening is 3600kg,hence total weight in compression is 3600+1300kg but the valve vendor stating that the valve bonnet will withstand only actuator weight hence he asking additional support for actuator,any one kindly advice what type of support can be used for this valve.
Regards
Nedu