How many types of valve used in pipe line?

 9 Types of valve used in piping 

 Hello friends,

Welcome to my blog prakashtechmech  today we learn about 

 9types of valves that are used in piping.

 

• Gate Valve 

• Globe Valve

• Check Valve

 • Plug valve

• Ball Valve 

• Butterfly Valve

• Needle Valve

• Pinch Valve and

• Pressure Relief Valve

At first 

 What is Valve? 

A valve is a device that regulates, controls or directs the flow of a fluid by opening, closing, or partially obstructing fluid flow. Basically it controls flow & pressure. 

Different types of valves are used to serve these functions. 

Let’s start with 

Gate valve

 Gate valve is the most common type of valve in any process plant. It is a linear motion valve used to start or stop fluid flow. In service, these valves are either in fully open or fully closed position. Gate valves are used in almost all fluid services such as air, fuel gas, feed water, steam, lube oil, hydrocarbon, and almost any service. Gate valve provides a good shutoff. 

Globe Valve

Globe valve is used to stop, start, and regulate the fluid flow. Globe Valves are used in the systems where flow control is required and leak tightness is also necessary. Globe valve provides better shut off as compared to gate valve and it is costlier than gate valve.

 Check Valve

The check valve prevents back flow in the piping system. The pressure of the fluid passing through a pipeline opens the valve, while any reversal of flow will close the valve.

 Plug valve

Plug valve is Quarter-turn rotary motion Valve that uses a tapered or cylindrical plug to stop or start the flow. The disk is in plug shape, which has a passage to pass the flow. Plug valve used as on-off stop valves and capable of providing bubble tight shut off. Plug valve can be used in vacuum to high-pressure & temperature applications

 Ball Valve

A Ball valve is a quarter-turn rotary motion valve that uses a ball-shaped disk to stop or start the flow. Most ball valves are of the quick-acting type,which requires a 90° turn of the valve handle to operate the valve. The ball valve is Smaller and lighter than a gate valve of the same size and rating. 

Butterfly Valve

A Butterfly valve is a quarter-turn rotary motion valve that is used to stop, regulate,and start the flow. Butterfly valve has a short circular body. Butterfly Valve is suitable for large valve applications due to Compact, lightweight design that requires considerably less space, as compared to other valves. 

Needle Valve

Needle valves are similar to a globe valve in design with the biggest difference being the sharp needle like a disk. Needle valves are designed to give very accurate control of flow in small diameter piping systems. They get their name from their sharp-pointed conical disc and matching seat. 

Pinch Valve

The pinch valve is also known as clamp valve. It is a linear motion valve. Used to start, regulate, and stop fluid flow. It uses a rubber tube, also known as a pinch tube and a pinch mechanism to control the fluid. Pinch Valve is ideally suited for the handling of slurries, liquids with large amounts of suspended solids, and systems that convey solid material pneumatically. 

Pressure Relief Valve

A pressure Relief valve or pressure safety valve are used to protect equipment or piping systems during an overpressure event or in the event of vacuum. This valve releases the pressure or vacuum at predefined set pressure. 

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