For long service life, good rust resistance, environmental protection, stainless steel valves have been widely applied in industry. Stainless steel valves are one of valve products essential for pipes. However, there are still quite few manufacturers in China which can meet the international standards....
Check valve at the outlet of centrifugal pump is used to prevent water hammer caused fluid backflow in outlet pipeline from damaging impeller inside pump. Check valve is mainly used to prevent fluid from flowing back which makes pump reverse and cause damage. And it also protects other storage tanks...
In recent years, for global gas industry highly developing, LNG has already become an important part of international gas trade. By 2020, LNG will account for 40% of gas trade volume and 15% of gas consumption. Gas liquefying plant should be equipped with low temperature ball valve. So, the valve is...
For energy conservation, noise reduction, low fluid resistance, rapid on-off, axial flow check valve has been widely used for oil and gas transmission pipeline. In China, for large LNG terminals having been built or under construction, axial flow check valve is installed at the position where non-return...
Power station welding gate valve is used for pipes of high temperature high pressure water, oil or over-heating steam in thermal power plant, petrochemical industry and metallurgy. The valve has the advantages of wearing resistance, temperature resistance, corrosion resistance and long service life....
Hard seal eccentric semi-ball valve uses the common path of eccentric body, eccentric ball, seat and stem for centring when they make rotational motion. It is tighter during closing to realize sealing. The ball is separated from seat completely, eliminating the abrasion of sealing ring and overcoming...
Silent check valve is a kind of automatic valves whose disc can open or close automatically based on fluid media inside pipes flowing. The disc of valve rotates with the centerline of body. Under the pressure of media in one direction, the disc opens; when media flow reversely, the disc closes automatically,...
Insulation ball valve and flanged gate valve are the same category of valve. Due to good heat preservation and cold insulation, insulation ball valve has been widely applied in chemical engineering, metallurgy, pharmacy and food, having high popularity on the market. Proper installation cannot only...
Electric high pressure gate valve uses flange connection, a kind of the whole direct casting valve. Electric high pressure gate valve is mainly used for water, oil and overheating steam pipes whose pressure below PN16.0MPa. Bonnet connection is used in central section, still having good sealing performance...
Intelligent pneumatic ball valve is driven by pneumatic actuator, having realized completed intelligent control. For its own advantages, intelligent pneumatic ball valve has been applied in different fields. For example, because of compact structure and reliable sealing, the valve is used for...
Corrosion on valve body is considered that the metal materials are destructed under the environment of chemical or electrochemical environment. The corrosion is caused by spontaneous interaction between metal and surroundings. So, isolating metal from surroundings or using more nonmetal synthetic materials...
For rising stem wedge gate valve, connection between stem and core loses efficacy which caused by corrosion, abrasion or improper operation during valve on-off, then, the core falls off. If the valve cannot be opened after being closed, the valve only can be cut out from the system and replaced. If...