A piston valve is a device used to control the motion of a fluid or gas along a tube or pipe using the linear motion of a piston valve within a chamber or cylinder.
The Piston Valve is very convenient to use, operate and maintain. Due to the large sealing area and valve size, it provides reliable shut-offs to the flowing fluid. The actuation process is so easy as there is no need for skilled personnel to operate the valve. The actuation can be done through a rotating hand wheel for mechanical actuation and automatically for electrical or hydraulic actuation. Apart from that, the maintenance of the valve is relatively easy. The sealings of the valve can be replaced simply while the body remains in the pipeline. The stem and piston assembly can be withdrawn by losing the bonnet bolts, and the upper and lower sealings can be replaced. If the piston is damaged, then it can be replaced in the same way.
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