Electric ball valve standard GB/T21465-2008 "valves term" is defined as: opening and closing parts (ball) driven by the stem, and around the stem axis for the rotary motion of the valve.
Mainly used to cut off or turned on the media in the pipeline, also for the regulation and control of fluid between hard seal V-valve V-ball core surfacing carbide metal seat which has a strong shear shear force, especially suitable for containing fibers, a tiny solid particles such medium. Electric ball valve into electric flanged ball valves, electric wafer ball valve, electric welded ball valve, electric threaded ball valves.
According to the sealed form also divided into soft seal electric ball valve, hard seal electric ball valves.
Electric ball valve structure briefly, only by a few parts, information consumed Province; small size, light weight, small size of the installation, the drive torque, pressure regulator valve, easy to operate, agile, just rotate 90 ° to quick startclosed; regulating the efficacy and closed sealing characteristics and at the same time has a good flow in areas of medium and large-caliber, low-pressure electric ball valves valve situation led. Electric ball valve in the full open position, the the butterfly plate thickness is only when the medium flows through the valve resistance, and therefore the valve pressure drop is small, it has a better flow dominated characteristics.
Electric ball valves bomb seal and metal seal seal type.
The elastic sealing valves, seals can be mounted on the body or attached to the periphery of the disc. Take metal sealed valve generally than elastic sealing valve and long life, but it is difficult to achieve a complete seal.
Metal seal can adapt to the higher operating temperature, the elastic sealing temperature limit shortcomings.
If the request electric ball valve flow dominated, it is important to accurately select the size and type of valve. The fundamentals of the structure of the electric ball valves are especially suitable for the manufacture of large diameter valves. Electric ball valves are widely used not only in the oil, gas, chemical, water disposal and general industry, but also the use of the thermal power plant cooling water system.
Electric ball valves of two clip-on electric ball valves and flanged electric ball valve. Clip-on electric ball valve is a valve stud connection between two pipe flanges, flanged electric ball valve is a valve with a flange valves on both ends of the flanges of convergence in the pipe flange bolts.
The strength properties of the valve to valve suffered medium pressure. The mechanical valve is suffered by the internal pressure of the product, and therefore required to have sufficient strength and rigidity to ensure the long-term use without causing break or deform.
It has rotated by 90 degrees electric ball movement, the cock body is a sphere, a circular through-hole or channel through its axis. The ball valve in the pipeline is mainly used to make the electric ball cut distribution and change the direction of flow of the medium, it requires only rotated by 90 degrees of operation and a small rotational torque can be closed tightly. The most suitable valve switch, use the shut-off valve, but the recent development has been the ball valve designed to give it throttle and control the flow, such as V-ball valve.
The main features of the electric ball valve is its own compact, reliable sealing, simple structure, easy maintenance, the spherical surface and seal often in the closed state, is not easy to be medium erosion, ease of operation and maintenance for water, solvents, acids, and natural gas is generally the work of the media, but also applies to the working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene, has been widely used in various industries. Ball valve can be a whole, it can be modular.
