Advantages of electro-hydraulic flat gate valve: small flow resistance, and its flow resistance without shrinkage is similar to that of a short tube. The flat gate valve with diversion hole is installed on the pipeline, and the pig can be used for pigging directly. Since the gate plate slides on the two valve seat surfaces, the flat gate valve fluid can be applied to the medium with suspended part…

The regulating valve is also known as the control valve. By accepting the control signal output by the regulating control unit, the regulating valve is operated by power to change the fluid flow. The regulating valve generally consists of an actuator and a valve. According to the power used by the actuator, the control valve can be divided into three types: pneumatic control valve, electric contro…

The high temperature ball valve is a metal sealing structure, the sealing form is metal-to-metal sealing, the metal sealing ring can be exchanged for metal sealing, and the stainless steel plate and graphite composite plate sealing ring is sealed to metal. In addition to electric, the driving forms of hard-sealed butterfly valves include manual, worm gear drive, pneumatic, etc. The disc of the hig…

Nuclear-grade valves are pressure-bearing parts with very strict quality requirements, and it is very important to ensure the quality of their products. The product quality of the valve is guaranteed by the whole process of design, production and use. Doing a good job in valve manufacturing and quality inspection is of great significance to the economical and safe operation of nuclear power valve …

The plug valve is a rotary valve in the shape of a closing member or a plunger. By rotating 90 degrees, the channel port on the valve plug is the same as or separated from the channel port on the valve body, so as to realize the opening or closing of a valve. The shape of the plug of the plug valve can be cylindrical or conical. In cylindrical valve plugs, the passages are generally rectangular; i…

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…

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…

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…