The valve body is cast in a "2-on" configuration, which produces two castings in one vertical pour.

• The new gating was hand fabricated in wax and added to the current wax pattern. A new mold was made and a sample casting was produced. 

• The new casting  design resolved the shrinkage problem and met the x-ray and penetrant quality test. 

• The added middle gates provided molten metal feed into the heavy connecting shaft and gave the required metal feed  that eliminated all the center shaft shrinkage. 

The photo to the right shows how the two valve bodies are oriented and rigged in the mold.