The plug valve is a rotating valve that closes or plunges. It rotates 90 degrees to connect or separate the passageway on the plug from the passageway on the valve body to achieve a valve that opens or closes. It is most suitable for use as a cutting and switching medium and a shunt, but it can sometimes be used for throttle, depending on the nature of the application and the corrosion resistance of the sealing surface. It is widely used in oil, chemicals, fertilizers, electricity and other industries. | |
Standards | |
Design and Manufacture | ASME B16.34,API 6D |
Face To Face Dimension | API 6D,ASME B16.10 |
Connection Dimension | ASME B16.5,ASME B16.25 |
Test and Inspection | API 598,API 6D |
Plug Valve Structural Features | |
The plug of the plug valve can be cylindrical or conical in shape. In circular cylinder plugs, the channel is generally rectangular; In the conical valve plug, the channel is trapezoidal. These shapes make the structure of the plug valve lighter. | |
Since the movement between the sealing surface has a wiping effect, and it can completely prevent contact with the flowing medium at full opening, it can also be used for media with suspended particles. | |
The plug valve is easy to adapt to multi-channel structures so that one valve can obtain two, three, or even four different flow channels. This can simplify the design of the pipeline system, reduce the amount of Valve usage and some connecting parts needed in the equipment. | |
Rotary plug valve is the earliest use of a valve, simple structure, rapid switch, and its fluid resistance is small. | |
The ordinary plug valve is sealed by direct contact between the refined metal plug body and the valve body, so the sealing is poor, the opening and closing force is large, and it is easy to wear. It is usually only used for low pressure(not more than 1 MPa) and small size (Less than 100 mm). | |
Rotary plug valve’s structure is simple, relatively small, light weight, and easy to repair. | |
According to the structure, it can be divided into four types: compact type plug valve, self-sealing plug valve, plug valve and oil injection plug valve. | |
According to the form of the channel, it can be divided into three types: straight-through plug valve, three-way plug valve and four-way plug valve. There is also a clamping plug valve. | |
Main Material | |
A216-WCB/WCC, A216-LCB/LCC, A351-CF8/CF8M/CF3/CF3M/CF8C, A105, F304/316, etc. | |
Pressure Range | |
CL150～CL1500; PN6～PN250 | |
Size Range | |
1/2”~20”; DN15~DN500 | |
Temperature Range | |
-196℃～+600℃ | |
Sleeve Type Soft Sealing Plug 
Inverted Pressure Balance Lubr
Inverted Pressure Balance Lubr| count3 Home Up page Next page End page pages：1/1page 9/page |
