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Precautions for installation and use of knife gate valve and application of knife gate valve
Knife gate valves are mostly used in some difficult-to-control fluid pipelines, such as sewage, chemical, coal, papermaking and other fields. They are generally equipped with electric or pneumatic actuators to realize the automatic operation of the valve. The gate with the vertical direction is used as the gate valve of the opening and closing parts, and the effect of cutting off the medium is goo… -
Feasibility of replacing gate valve and globe valve with double eccentric hemispherical ball valve
Ball valve is the fastest growing type of valve in China in recent years. In addition to hard-sealed ball valve, double eccentric hemispherical ball valve has also developed rapidly. Double eccentric hemispherical ball valve is a domestic product developed by importing German hemispherical valve products under the premise of carefully weighing the advantages and disadvantages of various valves suc… -
The difference between butt welding valve and socket welding valve
Socket welding is to insert one end of the pipe into the object to be welded with it, which is good for positioning, good welding and high strength. Socket welds are fillet welds, and socket welds have a higher pressure resistance and are commonly used for high-voltage parts. Socket welding is that the pipe is inserted into the tube sheet, and its weld is called a fillet joint. Socket welding is t… -
Duplex stainless steel valve performance characteristics
Due to the characteristics of the two-phase structure, through the correct control of the chemical composition and heat treatment process, the duplex stainless steel valve has the advantages of both the ferritic stainless steel valve and the austenitic stainless steel valve, and it combines the excellent toughness and the austenitic stainless steel valve. Weldability is combined with the higher st… -
Appearance and structural characteristics of eccentric hemisphere valve
The eccentric hemispherical valve is a top-loading structure. The valve installed on the pipeline can be directly inspected and maintained online, which can effectively reduce the shutdown of the device and reduce the cost.… -
Lift check valve installation method and installation and maintenance
Lift check valve refers to a valve that automatically opens and closes the valve flap by relying on the flow of the medium itself to prevent the backflow of the medium, also known as check valve, one-way valve, reverse flow valve, and back pressure valve. The check valve is an automatic valve whose main function is to prevent the backflow of the medium, the reverse rotation of the pump and the dri… -
Three major characteristics of soft sealing gate valve
The soft sealing valve gate itself is a kind of valve with strong sealing performance. Its characteristics are widely reflected in other aspects. Compared with valves of other materials, it has many advantages in industrial production and can be used with confidence, so for For many manufacturers, it is a better choice.… -
Explore the reasons for the use of long-neck bonnets for cryogenic valves
The cryogenic valve adopts the long-necked bonnet superior. The output liquid low-temperature medium, such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc., is not only flammable and explosive, but also needs to be gasified when heated up, and its volume expands hundreds of times when gasified. …