“0”Type Ball valve is rotation complete and full bore shut off valve,the disc is smooth and anti friction by special technique of surface hardening;the material of seat and sealing is made of carbon fibre of high temperatuer-resistant. The structure is delicate and reasonable. The character is small resistance, good sealing, stalbe torque, short on/off time, long work service. The design of anti-move can ensure the equipment and operation safe and reliable.