7) Application
Float equipment serves as the backbone of casing equipment used during primary cementing operations. It guides the casing to total depth and prevents contaminated mud from entering the casing. Also it provides a landing point for casing wiper plugs, reinforces the lower end of the casing string, and ensures greater accuracy of cement slurry displacement. 
 
8) Features:
a. The valve is made with phenolic material and molded with high strength concrete. Both of the valve and concrete are easily drillable with PDC or rock bits. 
b. High strength design ensure excellent performance for flow endurance and back pressure holding.
c. Saves considerable running-in time with automatically fill up. 
d。For the non-rotating floating ring, the special non-rotating groove design can ensure that the corresponding cementing plug is quickly drilled.

9）parameter