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different control valve bodies

by:DMS Seals     2019-10-21
The control valve adjusts the fluid flow rate because the position of the valve plug or disc changes due to the force of the actuator.
In order to do this, the valve should do all kinds of things.
It should contain fluid without external leakage.
It should have sufficient capacity to provide the expected services.
In addition, it should also include an appropriate end connection to fit with the adjacent pipe and actuator connection device, allowing the actuator thrust to be passed on to the valve plug rod or to the axis of rotation.
With the development of technology, the style of control valve body is also more and more.
Some of them can be used to meet various requirements.
Here are some introductions.
The first one is single.
Port valve body.
It is the most common style with simple construction.
It has various forms such as Globe, angle, Bar material, forging and split structure.
General single-
The port valve is specified for applications with strict closing requirements. They use metal-to-
Metal seat surface or soft
Seat with four fluorine or other combined material forming a seal.
They can handle most of the service requirements. Because high-
Pressure fluids usually load the entire area of the port, and the resulting unbalanced force must be taken into account when selecting actuators for them. Balanced-plug cage-
The wind valve body is also a popular type.
It is single port, because only one seat ring is used, providing the advantage of the balance valve plug that is usually only associated with the double seat ringported ones. Cage-
The style decoration provides valve plug orientation, seat ring retention and flow characteristic.
Except for sliding piston rings-
The type seal between the upper part of the valve plug and the cage wall actually eliminates the phenomenon that the upstream high pressure fluid leaks into the downstream low pressure system.
The third is large capacity, Cage
Guide valve body.
It is mainly designed for noise applications, such as high pressure gas decompression stations that often encounter Sonic gas speeds at the outlet of the conventional valve body.
The design features an oversized end connection with a streamlined flow path and is easy to maintain the decoration inherent to the cage
Architectural style. Port-guided single-
The port valve body is also very popular.
They are usually equipped with screwed-in seat rings and can be difficult to disassemble after use.
Reducing the dynamic force acting on the plug allows the selection of smaller actuators than is required for a single drive
Transplant of similar capacity.
There are many other types of control valve bodies.
They all have special features.
They can meet different requirements.
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