GV120 spherical single seated control valve with S shaped casting body cavity makes fluid flow smooth, light washing up, small vibration, little noise. Because of the top guided structure,the Valve plug is stable in the whole range of movement, the vibration and noise are reduced, and this minimize the valve parts wear and prolong the service life. The series of valves are widely used for non-cavitation liquid and gas within limited range of noise. And it has a great control of high viscosity liquids and slurries. This series are mainly applied in metallurgical, air separation, petroleum chemical industry, energy, power and building materials industry.