... , V-type, and eccentric rotatingSeal formSoft seal, hard, and PTFE sealedConstruction materialA105, SS304, SS304L, SS316, SS316LSeal materialRPTFE, PPL, flexible ... about construction material, working conditions and allowable leakage for soft seal type O ball valve, type V ball ... ball valve body, valve internal member. Configurations of soft seal ball valve Table 5 Technical information about electric ...