Description

It is the track ball valve. Structure characteristics The traditional ball valve, floating or fixed, would be easily worn becasure of continuous contact of the body & seat and large on-off torque, while orbital ball valve will be deflected at the angle of * before its rotation when starts or closes, the ball body and valve seat are separated within the whole course, therefore, the seat will not be rubbed worn, the on-off torque of which is also small. Application norm 1.Design manufacture according to GB****7 xxxxx to face according to QB/ZMV **7 xxxxx flange dimension according to JB/T*9.***9.4 GB/T***3.*****3.4 4.Valve check and test according to GB/T****7 Main parts and materials Spare parts name Material Body WCB ZG1Cr5Mo ***8CrNiMo ****2CrNiMo Cap WCB ZG1Cr5Mo ***8CrNiMo ****2CrNiMo Stem 2Cr*3 *8CrMoA1 1Cr*8Ni9Ti 1Cr*8Ni*2Mo2aTi Ball WCB+HCr 1Cr5Mo ***8CrNi ****2CrNiMo Seat PTFE/*3Cr/CrNi SS+STELLITE Seat B7/*5CrMoA 1Cr*7Ni2 Nut 2H/*5 2Cr*3 Packing PTFE