Description

CAST FLOATING BALL VALVE 1.Bow-out proof stem For the purpose of preventing the stem from flying off resulting in abnormal rising of the inner pressure of valve, shoulder is fixed at the lower part of the ***** addition, in order to prevent leakage resulting from burnout of packing set of the stem in a fire, thrust bearing is set at the contact position of the shoulder at lower part of the stem and valve ***** an inverse seal seat is formed which will prevent leakage and avoid accident. 2.Key lock Locks can be used to lock the manual valve when it is fully open or closed so as to prevent non-working personnel from pulling the handle which may result in misoperation of ***** can also avoid opening or closing of valve resulting from the shock from pipelines or unpredictable factors that may cause an ***** working pipelines such as combustible and explosive oil, gas and chemical medium, or for field piping site, the locking mechanism is especially useful.