-
The commonly used wedge gate structures are divided into three types: elastic wedge, rigid wedge, and wedge type double gate. The sealing surfaces on both sides of the wedge gate have a certain inclination angle with the vertical centerline of the gate, which is called the wedge half angle. The size of the wedge half angle has a significant impact on the performance of the gate valve. When the ang...
View More
-
The globe valve is a valve that uses the valve stem to lift and drive the valve head, thereby changing the distance between the valve disc and the valve seat to achieve opening and closing control. The globe valve is the most widely used cut-off valve in chemical production. Globe valves are mainly used for the control of water, steam, compressed air and other pipelines in actual production, but t...
View More
-
The spool ball of the floating ball valve moves between the two seat sealing rings with the help of medium pressure, while the spool ball of the trunnion mounted ball valve is connected with the valve stem and rotates around the center of the valve stem, and the floating seat support ring. Floating Ball Valve The ball of the floating ball valve is floating. Under the action of medium pressure, the...
View More
-
In today's valve family, gate valve is relatively widely used. Among them, wedge type double gate valve and wedge type elastic gate valve are the most widely used, because they have the best sealing effect. Everything has its advantages and disadvantages. It is because of its good sealing effect that the pressure in the middle chamber will rise abnormally in some occasions. Abnormal boost pressure...
View More
-
With the advancement of valve technology, there are more and more types of valves. Globe valves are also used a lot of valves, and high pressure casting globe valves are the product of technological progress. Next, Dervos will give you a detailed introduction to the high pressure casting globe valve. Structural Features 1. The series of cast steel globe valves have reasonable structural design, st...
View More
-
Stainless steel valve is made of stainless steel and has a handle, turbine, pneumatic, electric and other transmission structures. It is flexible and light to switch, compact in structure, light in weight, easy to heat preservation, easy to install, and has excellent sealing performance and corrosion resistance. Connection methods include welding, thread, flange, etc. Stainless steel valves are wi...
View More
-
Stainless steel gate valve is a device used to control the direction, pressure and flow of fluid in the fluid system. The material of stainless steel gate valve is an alloy composed of iron, chromium, carbon and many different elements. Iron is the main component element, and chromium is the main alloying element. Generally speaking, the chromium content must account for at least 11% to be called ...
View More
-
The opening and closing part of the bellows seal globe valve is a plug-shaped disc, the sealing surface is flat or conical, and the disc moves linearly along the center line of the fluid. The movement form of the valve stem includes a lifting rod type and a lifting rotating rod type. The bellows seal globe valve is only suitable for full opening and full closing, and adjustment and throttling are ...
View More
-
Soft seal gate valve is a common industrial valve. The opening and closing part of soft seal gate valve is a wedge. The direction of movement of the wedge is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. When manufacturing soft seal gate valves in batch, the following performance tests should be carried o...
View More
-
The opening and closing part of the gate valve is the wedge, and the movement direction of the wedge is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and is not suitable for adjustment and throttling. Most gate valves are forcibly sealed, that is, when the valve is closed, the wedge must be forced against the valve seat by external force to ...
View More
