File Name: types of valves used in oil and gas industry .zip
- 5 Types of Valves Every Oil and Gas Engineer Must Know About
- Different Types of Valves used in Piping – A Complete Guide of Pipe Valves
- Common Valves Used in Oil and Gas Industry
5 Types of Valves Every Oil and Gas Engineer Must Know About
Different types of valves are used in piping. In this article, I have covered classifications of valves and functions of valves. A valve is a device that regulates, controls, or directs the flow of a fluid by opening, closing, or partially obstructing fluid flow. A sound bit complicated? Ok, let me further simplified this. A valve is a mechanical device that controls the flow and pressure of fluid within a system or process.
In piping following types of valves are used depending on the requirements. It means that if you choose a ball valve over a butterfly valve for the same function. It can cost you more. So, the selection of valves is essential to the economics, as well as operation, of the process plants. Click on the link to learn about each of valve in more detail. A 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 a fully open or fully closed position. Gate valves are used in almost all fluid services such as air, fuel gas, feedwater, steam, lube oil, hydrocarbon, and all most any services.
The gate valve provides a good shutoff. 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 the gate valve and it is costlier than a gate valve. The check valve prevents backflow 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 is a 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 shutoff. A Ball valve is a quarter-turn rotary motion valve that uses a ball-shaped disk to stop or start the flow.
The ball valve is Smaller and lighter than a gate valve of the same size and rating. A Butterfly valve is a quarter-turn rotary motion valve, that is used to stop, regulate, and start the flow. The 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 valves are similar to a globe valve in design with the biggest difference is the sharp needle-like 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. The pinch valve is also known as a 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.
A pressure Relief valve or pressure safety valve are used to protect equipment or piping system during an overpressure event or in the event of vacuum. This valve releases the pressure or vacuum at a pre-defined set pressure. Different types of valves serve these functions. These valves can be classified or categorized based on;. Isolation valve isolates or cuts the supply of fluid when needed.
Gate, ball, plug, piston, diaphragm, butterfly, and pinch valve falls under this category. A control valve that regulates the flow of fluid falls in the regulation category. Globe, needle, butterfly, diaphragm, ball, plug, and pinch valve are used as a control valve. You can see that; some valves serve dual purposes such as the globe and the ball valve can be used as isolation as well as a control valve. Pressure and vacuum relief valve used to prevent overpressure and vacuum with the system that can damage the piping and equipment.
Non-return valve such as swing and lift check valve prevents backflow within the system. Whereas, some valves are designed to serve a special purpose. Such as multiport, knife, and line blind valve. Another way to classify the valve is the way it open and close. Each valve opens and closed by either Liner or rotary motion or by the quarter turn which is nothing but a rotary motion.
Linear motion valves use a closure member that moves in a straight line and cut the flow to start, stop, or throttle the flow. The closure device could be a disc, or flexible material, such as a diaphragm. Linear motion valves are slower in operation, but they provide a higher level of accuracy and stability in the position of the closure member.
Because of this quick turn, the operation of the Quarter turn valve is much faster than linear motion valves.
Some rotary motion valves are also known as the Quarter turn valve. In the table, you can see that the ball valve, butterfly valve, and plug valve are both rotary and quarter-turn valves. Whereas swing check, tilting disk, and other rotary motion valves are not a quarter-turn valve.
The last way to classify the valve is, types of the actuator is used to transfer the motion to operate the valve. The valve can be operated manually with the help of a handwheel, lever, chain, or by a gear wheel. An external power source such as an electric motor, air, hydraulic fluid, or solenoid is used to operate a valve from the control room. The check valve works automatically when subjected to the backflow. Thank You for subscribing to Hardhat Engineer.
Your Ebook will Open in New Tab. What is Valve? Chances are there that you already know this. But there is no harm to refresh the memory. Types of Valves In piping following types of valves are used depending on the requirements.
Different Types of Valves used in Piping – A Complete Guide of Pipe Valves
Valves are an essential part of any piping system in the oil and gas industry. Valves help regulate the flow of materials to and from machinery and equipment. This makes them integral in the many different kinds of functions and applications. Valves in the oil and gas industry have to work with liquids, gasses, viscous materials, and corrosive mediums. At any given time, a single factory may have a number of different kinds of valves installed, each performing a different function.
Common Valves Used in Oil and Gas Industry
Valves are mechanical devices that controls the flow and pressure within a system or process. They are essential components of a piping system that conveys liquids, gases, vapors, slurries etc.. Different types of valves are available: gate, globe, plug, ball, butterfly, check, diaphragm, pinch, pressure relief, control valves etc. Each of these types has a number of models, each with different features and functional capabilities.
Different types of valves are used in piping. In this article, I have covered classifications of valves and functions of valves. A valve is a device that regulates, controls, or directs the flow of a fluid by opening, closing, or partially obstructing fluid flow.
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5 Common Types of Valves Used in the Oil and Gas Industry
This article is all about valves, and the various types of valves and fittings available. Valves are mechanical or electro-mechanical devices that are used to control the movement of liquids, gases, powders, etc. In most instances, valves rely on some form of mechanical barrier—a plate, a ball, a diaphragm, for example—that can be inserted and removed from the flow stream of the material passing by. Some valves are designed as on-off varieties, while others allow very fine control of the passage of media. Material selection plays an important role in specifying valves to ensure the compatibility of the wetted parts of the valve with the fluid or powder passing through it. Sizing is determined by the pipe or tubing diameter, flow rate, and the width between flanges for pipeline valves being installed as replacements.
Control valves are valves that provide process control over flow rate, pressure, and temperature in the oil and gas industry. They work by varying the size of the flow passage way as directed by either a hydraulic, pneumatic, or electrical signal sent from a controller. The automatic operation of these valves gives them the ability to be operated remotely, rather than having an operator constantly monitoring and adjusting. Butterfly valves are used to isolate and modulate a variety of media with low pressure loss. The valve usually comes equipped with an actuator.