There are various types of Dome Valve is a pressure tight compressed air operated valve, capable of returning over one million maintenance-free cycles, even in abrasive, hazardous or toxic applications. The valve is mainly operated by pneumatic actuators, the linear cylinder or sector cylinder is fully closed driven, which offers a large output torque. When the valve is opened and closed, there is no contact between the valve core and the inflatable rubber sealing ring, reliable sealing performance and can work under severe working conditions. The offered Dome Valve is easy to install and made available in various sizes.