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Gate Valves are designed to serve as isolation valves. These valves help to control the flow of liquid through the pipes. To start or stop the water flow or any other kind of liquid, these valves are affixed to the pipelines. Gate valves are primarily used for on/off applications. Gate valves are very common due to their simple design and ease of operation. The gate is raised by a threaded stem to allow fluid flow. Gate valves are not recommended for throttling, or restricting fluid flow by having the valve partially open. Their Design: Gate valves are very simple, and operate in either the fully open or fully closed position. By turning the handle on the top, the screw turns and moves the wedge up or down. The wedge is angled in such a way that if wear does occur, the wedge will still be guided into position. When a gate valve is fully open, there will be small pressure drop across the valve. Contrarily, when the valve is fully closed, it is pressurized and very well sealed. With the

Butterfly valves are valves that isolates or regulates the flow of a fluid. They belong to a family of valves known as “quarter turn valves”. The closing mechanism is a disk that rotates. The disc is connected to an actuator outside the valve with the help of a rod. The valve plate when pivoted at the centre and moved with the help of an actuator, resembles the butterfly wings and therefore they are known as Butterfly valves. BUTTERFLY VALVES  TYPES: Butterfly valves are basically divided into different types on the basis of pressure and usage. As per Disc Closure Design Concentric Butterfly Valve Eccentric Butterfly Valves As  p er Piping Connection Design Wafer Type Butterfly Valve Lug Type Butterfly Valve Double Flange Butterfly Valve THEIR ADVANTAGES: Butterfly valves are similar to ball valves but have several advantages. They are small and, when actuated pneumatically, open and close very quickly. The disc is lighter than a ball, and the valve requires less structural support tha