valves,fittings,tubes

Straight-lift Flap check valve should be installed in horizontal pipelines, vertical lift check valve and bottom valve is usually installed in a vertical pipeline, and the media bottom-up flow.

       swing check valve mounting location is wrong restrictions, usually installed in horizontal piping, but can also be installed in the vertical pipe or dump material pipeline.

  Install a flap valve, should pay particular attention to medium flow direction should be the normal flow direction of the medium indicated by the arrow on the valve body is consistent, otherwise it will truncate the normal flow of media. Bottom valve should be installed in the bottom of the pump suction line.

 wafer check valve is closed, it will produce water hammer in the pipeline pressure can cause severe valves, piping or equipment damage, especially for big mouth lines or high voltage lines, it should cause those who use check valves close attention.

1, flexible Rubber Joint pipeline construction is necessary to let the man in the natural state do not occur in equipment goods artificially deformed. When the pipeline medium is acid, oil, heat and other special items should be chosen higher than the working pressure of a pipeline stall connector. Rubber joints can be curved around normal for medium temperature 0-60 ° C is ordinary water special media such as oils, acids, alkalis, and other corrosive high temperature and texture should be used in the case of solid corresponding information was resistant special rubber joints not blindly string with or universal.

2, convergence flange Rubber Expansion Joint flange or valve should be fit GB/T9115.1 (RF) flange. GJS (X)-A type JGD / KXT rubber joints in all types of equipment shall be so outstanding unit sphere two sub-reinforced rope ring full Karufalan pressure tank to prevent the joint when the ball off on the Falan La bolts first symmetrical hexagonal bolts or four balls tightened to ensure the full and the flange in place.

3, Rubber Expansion Joints with pipe flange bolts when convergence toward the pipe flange screw should be threaded at one end to prevent the pressure arch rubber joints swell when some bruises or stabbed each end of the bolt is necessary symmetrically pressurized Tighten all bolts tightness of the joint. So harsh environment  addition to adding the outer flat washer should be added stretched spring washers. To prevent the nut loose.

4, if the use of high-curvature arch rubber joints or bolts Hexagon difficult due to the need to use through flange hole and try to cut the ball stud threaded ends to prevent some outstanding ball was injured when the swell pressure rubber joints early damage. Flexible rubber flexible connector used in the pump should be located springs export should be between one side and the equipment metal springs and adjustable joints of large diameter device adjustable provenance.

5, when the pipe joint displacement greater than or equal to cover the amount of the maximum number of joints should be added to the ban in order to adjust the amount of displacement parallel to the pipe joint is super errand limit deflection displacement and the error condition but can not exceed the elastic limit, displacement, deflection, etc. detailed device data using the table below.

6, high water or floating in the water pipes should be fixed hangers, brackets or anchor bracket connector accepts pipeline itself does not allow axial force component and otherwise shall be equipped with anti-pull connector device (which accepts pipeline axial force than necessary force). The use of large-diameter rubber DN1000mm more joints for ease of equipment and labor intensity should decrease manufacturing a flange at one end of the short length of pipe to be appropriate rubber joints and the other end of the short pipe pipeline linking the future, then the short end of a long tube and pipe welding counterpart .

7, the device rubber joints  screw bolts should be toward the outside of each joint flange face bolts approach by diagonal compression evenly tightened to prevent repeated partial pressure. Threaded joints should be applied evenly wrench to tighten the norms do not use afterburner afterburner stalk the union slippery silk, smooth edges and cracking  and to regularly check to prevent loosening constitute off the plate or seepage.

8, soft rubber joints in the first time to accept the pressure test equipment such as pressure or after a long time out again from scratch before the opening  pressurized tighten the bolts should be operational again. When the rubber joints in water pump outlet close or open when stopping frequently to reduce the use of rubber joints long stretch and squeeze too much impact to the pipe flanges should add two limit device.

9, use or storage of soft rubber joints to prevent heat, ozone, oil and acid-base environment. Used outdoors or in a sunny shade should be established against the wind pipe rack prohibit violence Sai, rain, wind cloud. Joint appearance prohibit painting and surround insulation material. Rubber products due to the presence of aging doubt should promptly check replaced. Convergence in the implementation of the metal being welded flange material and remember that things will weld with a rubber cover to cover to prevent the welding joints burn sphere.

10 To facilitate short pipe welding deformation due to the radial error should be constituted before welding or other appropriate strength with round metal object put two pipe flanges being welded joints with a rubber flange convergence at such short tubes constitute a rigid body after the completion of the welding material welding remove.

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Clamp flexible expansion joint, expansion joints clamp connections and fire pipeline trench connection is the same, is the drainage works, including petroleum, mining, civil, construction, municipal, fire protection, the most commonly used industrial fields connection of the groove. One of the most common fire pipeline trench connection has been installed. Later clamp rubber joints expansion joints also spend a grooved connection, called clamp connections.

     Common market, clamp type fittings are generally rigid joints, rubber expansion joints for pipe, branch joints and quick connector. Integral clamp connection pipe fittings generally complete accessories matching supply by the same manufacturer, GB is not clearly defined, reducers, shaped pipe fittings manufacturer corporate standards can be implemented. Although the development of this technology in the domestic use of late, but because of its advanced technology, soon to be received by the domestic market. Developed since 1998 to the present, after a few years of development and application, gradually replaced the two traditional flanges and welded pipe connections. Not only technically more mature, the market also generally recognized, and got national regulations and policies to actively guide. Clamp fittings even technology, make the complex process of pipe connections simple, fast, convenient and make the pipe connection technology is a major step forward.

       Installation Features of rubber expansion bellows: 1. Favor construction safety. Using clamp fittings connection technology, construction convenient, simple connection; 2 without special training, a connection only takes a few minutes to reduce the technical difficulty, stable quality, reduce floor space, landscaping pipeline installation results. 3 site only requires cutting machines, grooving machines and buttons used to move the bolt hand tight time-saving, low installation cost, low maintenance costs, spending less time. 4 clamp rubber joints, expansion joints connecting technology has the tools less convenient construction organization, does not produce pollution and other characteristics, compared to the traditional connection is reduced complexity and risk. 5 clamp connections with flexible features Flexing, allowing piping with anti-vibration, anti-shrinkage and expansion capabilities than traditional flanged, welded connection for more flexibility, with changes in the temperature characteristics.

Double flange limited dismantling joint is loose flange limited telescopic joint and a short tube combination. Double flange limited telescopic joint to prevent excessive displacement due to pipeline leakage and lead to joint damage compensation, mainly for absorption within the allowable displacement axial displacement and axial thrust pressure pipe loose connections.

Double flange limited telescopic joint for conveying water, fresh water, hot and cold water, drinking water, sewage, crude oil, fuel oil, lubricating oil, refined oil, air, gas, temperature no higher than 250 degrees vapor and particulate powder and other media.

Double flange limited dismantling joints pipe flange connections on both sides, can be installed in the pipe and valve connections, both to compensate for expansion and contraction of the pipeline valve repair volume is provided for convenience.

  Be adjusted during installation double flange limited telescopic joint ends with flange connection length, right angle turn evenly tighten the gland bolts, nuts and then adjust the limit, so you can make the amount of piping freely within the telescopic retractable, locking amount of stretching to ensure safe operation of pipelines. Double flange limited telescopic joint applies to both sides of the flange connection.

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Electronic electric pinch valve from the electronic valve electric actuator with integral hose, wear and corrosion resistance. Electric hose valve to AC 220V power as the power to accept a unified standard signal 4-20mA control valve opening degree, reached on the process flow, pressure, level and other parameters of automatic control, automatic control system of the production process is an ideal component.

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China's Gate valve industry has been decades in the meantime, domestic policies and economic situation turns for the better, both for the resilient gate valve industry to provide favorable conditions for the development, the upside is also very great. Expected in the next few years time there will be a larger valve industry upgrading.

At present, China's petrochemical industry is moving towards large-scale, scale and direction of international development, the next five years will remain sustainable development. Domestic dozens of million-ton oil refining equipment and megaton ethylene unit will be newly renovated and expanded, the demand for the petrochemical valves opened up a vast market. In addition, various types of domestic refinery run pumps have obsolescence, needed updating and transformation.

The next five years China Petrochemical buried gate valve development direction is large, mechanical and electrical integration, and product sets and standardization. Especially in high temperature and pressure valves, cryogenic valves and cryogenic valves, corrosion-resistant stainless steel valves, conveying viscous medium and medium stainless steel ball valve with solid particles in the rapid development of production technology, the demand will increase dramatically.

Of China's apparent consumption has reached the world's highest level of total global consumption of nearly 1/4, the per capita steel consumption reached 3.4KG, leapt to the forefront of developing countries. Stainless steel valves corrosion resistant, high strength, lightweight, long life and excellent features. In recent years, stainless steel valves in shipbuilding, rail vehicles and other transport is widely used, with the development of machines, stainless steel valves will have a more broad application prospects. However, consumption growth rate gradually slowed down from spending more than 30% average annual growth rate of ultra-high-speed development stage, into a growth rate of 6.43% of the current phase of steady development.

Valve market prices relatively stable, although slightly down year, but the magnitude is very small, the market outlook is still worth promising. According to the National Bureau of Statistics data show that in 2009, China valve manufacturing more than 1,700 enterprises above designated size, nearly four million tons production of valves, industrial output value of 114.7 billion yuan, total profit of 6.39 billion yuan. Future, the rising stem gate valve industry will move towards two main directions, the first being that single species to multi-species and multi-standard development, the second is to develop in the direction toward saving. Complete sets of manufacturing projects to meet the needs of an enterprise of valves required for the project to be produced, which determines a valve manufacturer to provide all the trend will grow.

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Duck Valve aka Duckbill Check Valve, is a special structure, in shape duckbill-shaped, with a positive displacement flow, reverse-return features of the new drainage valve products, widely used in the market municipal, water, sewage systems, drainage systems, dams emissions, airports, highways and drainage, sewage tank discharge, odor barrier and other types of effluent discharge port services, can effectively prevent the backflow of the intrusion, the formation of jet velocity and diffusion, with a buffer, silencer performance, maintenance-free and no corrosion, etc.. It is in sealing performance, performance under harsh environment purification capacity and improve performance far better than the waves shoot the door, it replaces shoot the door, knocked on the door to solve the traditional run in poor condition, a large leak, broken hinge pin oil, slag deposition, valve seat wear, distortion and corrosion, noise, need regular maintenance and replacement of technical problems. Significant market application instructions, the valve has other products unmatched reliability advantages. Since our factory product quality, well received across the country welcomed valve manufacturers, in order to better service for all valve manufacturers, factory constantly updated to create new varieties, wholeheartedly welcome new and old customers to negotiate business.

Duckbill Valve in the purchase of goods are recognized when the first outlet conduit pipe diameter, pipe material, pipe is corrugated, pipe outlet was flooded locations, pipes and other media in the row. To confirm the choice of a rubber duckbill valve model is more economical and reasonable. If do not understand, please call us, our technical staff can according to your specific situation to develop a reasonable product selection, you need to provide as much help.

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Speaking of electric butterfly valve, you may not be familiar, but to talk about power, chemical, metallurgy, environmental protection, water, light industry, building materials in these areas, the reader may have a better understanding, and electric control valve that is played in these areas an important role.

With sustained economic development, industry is also dominated by the former Human slowly into the automation industry, a variety of industrial automation equipment plays an important role in the liberation of a large amount of manpower and resources, the electric control valve is driven by electricity automation equipment.

Contact with industry people know that the automotive industry, the wafer butterfly valve is a very important part of the lug butterfly valve  is a kind of industrial valves. It does this by receiving a signal industrial automation control system to drive the valve plug and seat alter the cross-sectional area between the size of the control flow of media channels, temperature, pressure and other process parameters, automated adjustment function, is the crystallization of industrial automation technology. Today, the electric control valve which has been prevalent in many companies, there are more and more people realize the advantages of the electric control valve and importance of the development of the electric control valve can be said to be a good prospect.

With the Internet boom of decline, the government increasingly recognizes that online virtual economy must rely on a strong economy can be developed entity, the entity economy has become today's economy the most important part, also will promote the rapid development of industry such as Shanghai Ju-liang valve industry and some industrial enterprises in the rapid rise of China has become the backbone of industry.

Growth promoting industrial development of automation equipment, and electric control valve as an excellent device again to promote industrial progress. Today, the Chinese industry has ushered in a new round of challenges and opportunities, and triple offset butterfly valve will definitely play a huge role in this wave.

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xh-type flexible valve aka "Duck Valve", is a special structure, appearance was "beak-like", with the "positive displacement flow, reverse-return" feature of the new drainage valves. The valve does not have any active components, free of any maintenance. Can give straight pipe, flange pipe, concrete pipe, glass pipe support, widely used in coastal, beach, pier, reservoirs, municipal drainage, cesspools discharge, odor barrier, pumping systems and other effluent outfall.

     xh-type Duckbill check valves can effectively prevent backflow and intrusion precipitate, and the outlet of the conventional fixed tube is different: duckbill valve and outlet flow jet velocity was complex nonlinear relationship tests showed duckbill sewage discharge valve flow rate necessary to achieve effective mixing, the mixture of the same circular pipe than the desired flow rate much smaller, the flow characteristics of different valve port various tests, while the test data analysis, the a general two-dimensional internal dynamics calculation formula results of these tests show that the use duckbill valve, enabling diffusion is more stable, while a large jet velocity, energy is also large, with a laser velocimetry technique duckbill valve jet Koupen near the mixing zone, the results show duckbill discharge port than the standard circular nozzle has a better diffusion.

     xh-type flexible check valve has a buffer, silencer performance, maintenance-free and non-corrosive, etc.. It is in sealing performance, poor working environment and enhance performance water purification performance far superior to shoot the door, knocked on the door to solve the traditional butterfly valve or mechanical failure due to a lot of poor operating conditions, a large leak, seat wear, deformation of parts and corrosion, noise, need regular maintenance and replacement of technical problems. Be described as green valve.

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