Plunger valves and ball valves have their own uses
Plunger valve is composed of valve body, valve cover, valve stem, plunger, hole frame, sealing ring, handwheel and other parts. When the handwheel rotates, the valve stem drives the plunger to reciprocate up and down in the middle of the hole frame to complete the opening and closing functions of the valve. An interference fit is used between the plunger and the sealing ring in the valve. By adjusting the flange bolts in the gland, the lateral force generated by the compression of the sealing ring is sealed with the middle hole surface of the valve body and the outer circle of the plunger
function; thereby ensuring the sealing of the valve, eliminating internal and external leakage, and at the same time, the valve opening torque is small, and the valve can be opened and closed quickly
Ball valve (ball valve should be a stop valve in the field of offshore engineering and shipbuilding) ), refers to a valve that uses a ball with a circular through hole as the opening and closing part, and the ball rotates with the valve stem to achieve the opening and closing action [1]. The standard GB/T21465-2008 "Valve Terminology" defines it as: the opening and closing parts (balls) are driven by the valve stem
;
The opening and closing parts (balls) are driven by the valve stems. It is a valve that rotates around the axis of the square ball valve. It can also be used for the regulation and control of fluids. The hard-sealed V-shaped ball valve has a strong shear force between its V-shaped ball core and the metal valve seat with hard alloy surfacing. It is especially suitable for applications containing fibers and tiny solid particles. materials and other media. The multi-way ball valve can not only flexibly control the confluence, divergence, and flow direction switching of media on the pipeline, but can also close any channel and connect the other two channels. This type of valve should generally be installed horizontally in pipelines. Ball valve classification: pneumatic ball valve, electric ball valve, manual ball valve.