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valve stem damage How to avoid valve stem damage
The valve stem damage reason and how to prevent valve stem damage
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Valve leakage How to prevent valve leakage?
To prevent valve leakage is an important work for valve engineers and valve users.FREE-VALVE analyse the valve leakage reason and make some advice on how to prevent valve leakage .
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Pneumatic ceramic ball valve The Selection Of Valve Pneumatic Actuator
The advantage of the valve matching up pneumatic actuator is that the opening and closing speed is faster, especially when the torque is small, it can also be opened and closed within 0.5s.
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valve application What should we do for valve internal leakage
Valve is the control part of industrial pipeline system , which plays an important role in pipeline system.  As an important component of pipeline, its sealing performance directly affects the valve use effect. 
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Ceramic Valve Developing history of Ceramic material
FREE-VALVE company developed toughening ceramic materials, solve the” brittle” problem of common ceramics, greatly improve the impact toughness of the ceramic.At the same time, FREE-VALVE technical team overcome the combination problem of metal and ceramic material of valve parts , it successfully applied in the field of industrial valves, developed "wear-resisting valve". FREE-VALVE’s wear-resistance valve include ceramic lined gate valve ,ceramic lined butterfly valve ,ceramic ball valve etc .
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Ceramic Butterfly Valve The Importance of valve selection
How to select the valve correctly is the key to realize the sealing performance, strength performance, control performance, movement performance and flow performance of the valve.
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ceramic ball valve Valve Body Materials
There are many type of valve body materials ,suitable for a variety of different conditions. Maybe many kinds of valve body materials can meet the requirements of different working conditions,but the correct and reasonable selection of the valve material, can obtain the valve the most economic service life and the best valve performance.How to select the material of main valve parts ? First of all, the physical properties (temperature, pressure) and chemical properties (PH value and corrosion) of the working medium should be taken into account. At the same time the cleanliness of the medium should also to be considered (there are no solid particles or not ,different phase). In addition, different countries or district have different valve standard requirements ,valve material selecting
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Pneumatic dome valve Principle of operation for pneumatic dome valve
Pneumatic dome valves used to be used as feed valves are widely used in the ash handling system in the coal power plant .Do you know their operating principle ?
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non rising stem gate valve Rising Stem Gate Valve VS Non-rising Stem Gate Valve
According to the structure of valve stem,  gate valve can be divided into Rising Stem Gate Valve and Non-rising Stem Gate Valve,the main difference between Rising Stem Gate Valve and Non-Rising Stem Gate Valve.
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pneumatic actuator application How to deal with the pneumatic actuator slow reaction, valve opening and closing jitter situation
Pneumatic actuators using state often corresponding changes because of the change of the actual working condition, such as accessories in aging, parts aging and original valve replacement , gas supply system failures, etc.,
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form E Certificate of Origin FORM E
Sometimes, certificate of origin is goods export documents , the customer usually have related requirements to the documents, Different certificates of origin can enjoy different import tax rates to customers, such as one importer is from Vietnam, he can purchase goods from different countries , why did he choose China? One reason is China-ASEAN free trade agreement, and the certificate of origin is that he can enjoy the documents of preferential policies.For example FORM E:
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3PC fixed ball vlave The difference between floating ball valve and the fix ball valve
The floating ball valve is simple in structure, small in size and has good sealing, but the ball of the floating ball valve is floating, Under the medium pressure, the ball can produce certain displacement and press on the seat at the outlet end to ensure the seal of outlet port
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Certificate of Origin Certificate of Origin China- Pakistan FTA
China and Pakistan signed the China-Pakistan Free Trade Agreement, China exports to Pakistan as long as the products accord with the "China-Pakistan Free Trade Agreement rules of origin", exporters can apply for the CERTIFICATE OF ORIGIN CHINA- PAKISTAN FTA (that is, certificate of origin China-Pakistan FTA (FORM P)
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ceramic rotary disc gate valve Comparison of ceramic rotary feed valve and dome valve
Pneumatic dome valves used to be used as feed valves for warehouse pumps in the dry ash delivery system at coal fired power plants.
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butterfly valve The application difference between flange and wafer butterfly valve
Butterfly valves are not only widely used in petroleum, gas, chemical and water treatment, but also in the circulating water system of power plants.Wafer and flange are two types of connecting.Flange butterfly valve body has flange on both ends, connected to pipe flange.
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 globe valve opening height calculation Angle globe valve opening height calculation
Angle globe valve opening height calculation During the globe valve designing and application,is the opening height of the valve related to which parameters?The ...
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How to select tank bottom angle valve
Tank bottom angle valves are divided into disc opening into the valve and disc opening into the tank . Sometimes ,they are also called open-down type and open-up type .
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