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 under the working conditions of high temperature and high pressure. Upper layer of sealing face of electric high pressure gate valve is bead welded by cemented carbide. The pure metal layer is...
Structural Features of Electric High Pressure Gate Valve Read
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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 protect insulation ball valve from abrasion, but also can improve its efficiency. Installation steps of insulation ball valve: 1. Take off protective caps at the two ends of flange. The valve...
Installation Steps of Insulation Ball Valve Read
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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, blocking media inside pipes flowing. Silent check valve has light volume and weight, convenient for transportation and installation while it is not suitable for media having granular solid or...
Tips for Installing Silent Check Valve Read
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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 the abrasion between conventional seat and body. Nonmetal elastic materials are implanted into metal seat so that the metal face of seat can be protected. The valve is quite suitable for fiber, tiny...
Feature of Hard Seal Eccentric Semi-Ball Valve Read
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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. Power station welding gate valve has the following features. 1. The shell is cast by using precise technology, having smooth appearance, uniform microstructure and meeting the requirement of low...
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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 is required. During design, advancement, reliability, safety and stability of technology should be taken into consideration. What’s more, damping, shock absorption and energy conservation should...
Axial Flow Check Valve in LNG Terminal Read
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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 popular. Under the pressure of media, the floating ball of low temperature ball valve may displace definitely and adpress the sealing face of outlet, maintaining the sealing of outlet. Low...
Low Temperature Ball Valve is Popular for LNG Read
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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 from being damaged by fluid backflow. According common situation of pump, choosing check valve for outlet of centrifugal pump should follow these tips: 1. For pipeline having low...
Check Valve at the Outlet of Centrifugal Pump Read
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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. So, consumers must require suppliers to provide production certificate and factory certificate of valves before purchasing. Consumers also can use spectrograph for detection. Spectrograph has high...
The Application of Stainless Steel Valves Read
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Check valves applied on sewage lifter can solve the problems which are caused by sewage backflow. Drain pipes equipped with check valves can protect equipment from being damaged by sewage backflow, and reduce water storage capacity inside equipment meanwhile. Sewage lifter is used to drain the sewage which cannot be drained by gravity flow through high pressure produced by pump. It is mainly used for basement. Sewage in basement is taken to upper storey or nearby discharge pipes, then flow...
Check Valves Applied in Sewage Lifter Read
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