Classification and Types of Pumps

Classification of pumps

The pump is a mechanical device used for raising liquid from lower level to higher level. This is achieved by creating low pressure at the pump inlet and high pressure at the pump outlet. Due to low inlet pressure, the liquid rises from where it is available. High outlet pressure …

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Different Types of Welding Processes

Types of Welding Process

Different types of welding processes used in all over the world. More than 50 different types of welding operation have categorized by the American Welding Society (AWS). We can divide all those welding processes into two major groups’ fusion and solid state welding. 1. Fusion Welding Fusion welding further classified …

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Welding Definition and Applications

Welding Definition

Welding is the dominant method of joining parts in the manufacturing industry. Welding definition described as: “Welding is a material joining process in which two or more parts combined at their contacting surfaces through a suitable application of pressure and/ or heat”. We can also describe welding definition as: “It …

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NPSH of Pump

NPSH

In a centrifugal pump, the pressure of the fluid at all points within the pump must remain above saturation pressure. Otherwise, cavitation occurs in the pump. Net positive suction head (NPSH) determines the adequate pressure of the fluid to avoid cavitation. The total suction head in meters absolute determined at …

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Boiler Accessories and their functions

Boiler Accessories

The devices used in a Boiler as an integral part and help to run the Boiler efficiently are called  Boiler Accessories. Boiler accessories are optional in a boiler. Without Accessories, the boiler can produce steam with low efficiency. To increase the efficiency of the boiler, accessories are used. Boiler Accessories …

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Boiler Mountings and their functions

Boiler Mountings

Fittings on a Boiler which are required for its safe and efficient operation are called boiler mountings.  Mountings directly fitted with boiler and designer also provide specific space/area for specific mounting. A boiler cannot be operated without mountings. There are many types of boiler mountings, following are some important boiler …

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What is Pump Cavitation?

Pump Cavitation

In a centrifugal pump, the flow area at the eye of the pump impeller is usually smaller as compared to the flow area of the pump suction piping. When the pumped liquid enters the eye of the pump, the decrease in flow area results in an increase in flow velocity. …

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Gate Valve and Its types

Gate valve is a linear motion valve used to start and stop the flow of fluid. It’s a full opening/closing valve. Disc or gate used to start or stop the flow which is operated through a combination of stem and handle. Upward and downward linear motion of stem causes the …

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Difference between Centrifugal pump and Reciprocating pump

Difference between Centrifugal pump and Reciprocating pump

Difference between Centrifugal pump and Reciprocating pump Centrifugal pump is a rotodynamic pump that uses kinetic energy to transfer fluid from low pressure to high pressure while the reciprocating pump uses a piston (suction and discharge stroke) to transfer fluid. Centrifugal pump is the most popular pump as compared to …

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Plug Valve Working Principle and Types

Plug Valve

Plug Valve Working Principle: Plug valve is the oldest member of valve family and used to start or stop fluid flow. It is a rotational motion valve. Body, plug (tapered or cylindrical) and cover are the basic parts of plug valve. The plug is a solid disc with a bored …

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