Rubber lined butterfly valve and rubber lined gate valve their own characteristics and choice of rubber lined butterfly valve is mainly used in the oil, water and electricity and other fields, generally is a sealed structure.Due to the material problem, it is not suitable for use in high temperature and corrosive industry, but it is much stronger than the traditional butterfly valve high temperatu...

Gate valves are the most widely used of all types of valves.Gate valve refers to the closing parts (gate) along the channel mainly as cutting medium, that is, full open or full closed use.General gate valves should not be used for throttling.It can be used at high temperature and high pressure, and can be used in a variety of media.Gate valves are generally not intended for use in mud or viscous f...

Valve corrosion is the main cause of valve failure. Chemical corrosion and electrochemical corrosion are two forms of valve corrosion.The corrosion rate of the valve depends on the temperature, pressure, and chemical properties of the valve runner stop valve. Repair or replacement is required if the valve seal corrodes.Valve corrosion can not be completely eliminated, we can do a good job through ...

Check valve is a kind of automatic opening and closing valve that does not need manual or other operation. It depends on the flow of the pipeline medium itself to open or close the valve. It is mainly used to prevent the reverse flow control of the pipeline medium.Check valve only one direction of flow, that is, can only flow along the inlet can not reverse, medium reverse flow when the disc is cl...

Fire valve is an important accessory for the control of industrial and building pipelines. It is a kind of valve with high control precision, especially for the control of flow.At present widespread use in the industrial control system, in the use of the process will often appear a variety of problems to trouble us, this small make up mainly about the fire valve leakage reasons and treatment metho...

1, small and light, easy to disassemble and repair, and can be installed in any position.2, simple structure, compact, 90° rotation opening and closing quickly.3. Small operating torque, light and labor-saving.4, flow characteristics tend to straight line, good regulation performance.5, opening and closing tests up to tens of thousands of times, long life.6, to achieve complete sealing, gas test l...

Gate valve is a gate with open and close parts, the movement direction of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, can not be adjusted and throttle.Gate valves are sealed by contact between the seat and gate. Usually, the sealing surface is surfacing welded with metal materials to increase wear resistance, such as surfacing 1C...

Globe valve, throttle valve, pressure reducing valve, check valve and other valves are directional, if installed upside down, throttle valve will affect the service effect and life;Relief valves do not work and check valves can be dangerous.General valve, on the valve body has direction marking;If not, the valve should be correctly identified according to the working principle.The valve chamber of...

The metal butterfly valve as the relevant mechanical system about the dynamic source and related area control facilities are indispensable, its use of metal alloy material means that it has a high application rate of components as a necessary stability and durability characteristics.Indeed the fact also proved that many times the performance of the metal butterfly valve is more reliable, and the c...

1.Valves used in oil refining plant are mostly pipeline valves, mainly gate valves, globe valves, check valves, relief valves, ball valves, butterfly valves, steam traps, among which gate valve demand accounts for about 80% of the total number of valves2.Large diameter and high pressure safety valves, relief valves, globe valves, gate valves, butterfly valves and flow control valves are required f...