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Stainless steel flanged plug valves two DN125 Shanghai Valve Shanghai valve

discount 70% in 2018-09-23 to 2018-09-25
price: USD$ 1365.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Plug valves are closed or plunger shaped rotary valve, through the rotation of 90 degrees to the valve plug on the mouth of the channel and the valve on the mouth of the mouth of the same or separated, to achieve a valve opening or closing. The plug of the plug valve can be cylindrical or conical in shape. In the cylindrical valve plug, the channel is generally rectangular; and in the tapered valve plug, the channel is trapezoidal. These shapes make the structure of the stopcock lighter, but at the same time produce some losses. Plug valves are most suitable for cutting and closing media and for shunting applications, but according to the applicable nature and erosion resistance of the sealing surface, sometimes can also be used for throttling. Because of the wiping action between the sealing surface of the plug valve, it can completely prevent the contact with the flow medium when it is fully open, so it can also be used in the medium with suspended particles. Another important feature of the plug valve is that it is easy to adapt to the multi-channel structure, so that a valve can get two, three, or even four different flow channels. This simplifies the design of the piping system, reduces the amount of valves used and some of the fittings required for the equipment.
Plug valve application:
Plug valves are widely used in oil production, transportation and refining equipment, but also widely used in petroleum, chemical, chemical, gas, natural gas, liquefied petroleum gas, HVAC industry and general industry.
Main advantages of plug valves:
It is suitable for frequent operation, quick and easy opening and closing.
Fluid resistance is small.
The utility model has the advantages of simple structure, relatively small volume, light weight and convenient maintenance.
Good sealing performance
The flow direction of the medium can be arbitrary without limitation of the installation direction.
No vibration, little noise.
Plug valve installation and maintenance should pay attention to
I want to leave the position of valve handle rotation
You can not be used for throttling.
The belt drive mechanism of the valve should be installed upright.