Pinch valves are a kind of flex-body valve that has a flexible tube that may be "pinched" together to totally obstruct the flow channel. It can be accomplished via the use of mechanical methods or with the use of fluid pressure. GMK pinch valve has flow tunnels that are straight and unbroken, and it does not have any bends or moving parts in it. The flexible body of this pinch valve has the potential to form a seal around the trapped materials. Because of this characteristic, the GMK pinch valve is an excellent choice for use while dealing with slurries, foods, and pharmaceuticals. GMK pinch valve finds use in situations where there is a potential for corrosion or metal contamination of the fluid. This is made possible by the fact that the working mechanism of the valve is totally separated from the fluid.