Integral Valve Design and Application for Oil Well Pumps

In the process of oil production,the integral whole type valve cover for CYB-275TH,CYB-325TH and CYB-375TH was designed,which improved the structure of flow way and the movement track of any ball of valves,and overcame the above-mentioned weakness on the oil well pumps.This paper introduced the design principle,the important points of design and the application result.