Casting valve parts mainly include valve housing ( valve bonnet, valve body, valve casing) , valve disc, valve stem, valve handwheel and so on. 
Available material mainly is ductile iron, grey iron, carbon steel, alloy steel, stainless steel etc.. 
Sizes according to specific requirment by drawings or samples measuring. 
Any related request, please feel free to contact us, skype is also available for quick contact, my skype is "annama1980".