Ball Valves

A ball valve is a shut off valve that controls the flow of a liquid or gas by means of a rotary ball having a bore. By rotating the ball a quarter turn (90 degrees) around its axis, the medium can flow through or is blocked. They are characterized by a long service life and provide a reliable sealing over the life span, even when the valve is not in use for a long time.

Gate valves

The gate valve, also known as a channel valve, is a valve that opens by raising a hatch or blade (round or rectangular in shape) to permit the passage of fluid. The main distinctive characteristic of this type of valve is its closing, by seating the disk in two areas distributed over the surfaces of both faces of the disk. This is why these valves are often used when a straight-line flow and minimum restriction are required. Gate-valve seats can have wedge shapes or be parallel.

Globe valves

A globe valve, different from ball valve, is a type of valve used for regulating flow in a pipeline, consisting of a movable plug or disc element and a stationary ring seat in a generally spherical body.

Globe valves are named for their spherical body shape with the two halves of the body being separated by an internal baffle. This has an opening that forms a seat onto which a movable plug,can be screwed in to close (or shut) the valve.The plug is also called a disc.In globe valves, the plug is connected to a stem which is operated by screw action using a handwheel in manual valves. Typically, automated globe valves use smooth stems rather than threaded and are opened and closed by an actuator assembly.

Check valves

A check valve is a device that only allows the flow of fluids in one direction. They have two ports, one as an inlet for the media and one as the output for the media. Since they only allow media flow in one direction, they are commonly referred to as ‘one way valves’ or ‘non return valves.’ The main purpose of a check valve is to prevent backflow in the system. Figure 1 shows an example of a check valve.


A Y strainer, sometimes referred to as a wye strainer, is designed to mechanically remove solids and other particles from fluids. They are an essential component in numerous fluid control applications to ensure no down-stream component is affected by particles within the fluid. In this article we will review their design, use cases, how to size the mesh filter, materials, and how to clean them.

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