We have found the valve weight from Caesar II data base may be incorrect, For example, flanged valve, CaesarII gives you correct dimension but the weight only of valve itself, that means lack of flange weights. even some case, the weight is less than valve's weight.

Zhiyuan,

I believe the valve database in CAESAR II is probably a good start for an analysis, but once you know the actual weight of the valves and the flanges that you intend to use, what is stopping you from entering that information into your model?

The actual weight you use might vary depending on actuator/operator, reduced/full bore, whether the valve is cast/forged and so on.

Have you made sure the pressure class of the valve you've chosen in the flange/valve database is correct? This could also make a huge difference.

Best of luck!

zhiyuan xu

If u know the valve weight & length directly u enter in the spread sheet it may vary depending upon the material construction.

Yep, you need to be careful, those wooden valves are pretty light.

Seriously, I don't understand this last post (unless it's Nuclear). You wouldn't use Cast Steel valve weights for Cast Iron or Bronze valves. Stainless valves many times are a little different than Carbon Steel but the weight's not that much different. If you're adjusting vavle weights for the difference in density between Steel, Stainless and Chromium steels, then you're really splitting hairs. The weight difference between manufacturers is greater than that. And if you buy a Crane Valve, that valve is most likely NOT going to be the one shown in their catalog, but the one of their current supplier.