The working principle of the ball valve by rotating the valve stem to the valve smooth or occlusion. Can be full bore ball valve, 90 ° C angle, ball valve switch lightweight, small size, can be made into a large-caliber, reliable sealing, simple structure, easy maintenance, the sealing surface and the spherical often in the closed state, is not easy to be medium erosion various sectors has been widely used. 
 Pao-teh valve - ball valve series products: floating ball valve, flanged ball valves Q41F-16/25/40/64/100/160/320, Q41H fixed ball valve Q47F the Q47H fire ball valve, anti- static ball valve, ball valve manual ball valve, pneumatic valve Q641, Q647, Q671, electric ball valves Q941, Q971, Q947, worm gear Q341, Q347. Metal hard seal ball valve Q41H/Y-16/25, the temperature valve Q41Y / H, Q47H / Y, Q41PPL. High Pressure Ball Valve Q61N-320, Q41N, Q41F / H, Q11N, Q81N, small high-pressure ball valves KHB KHM series, butt welding of high pressure ball valve Q61Y Q61F, high temperature and high pressure ball valve. Insulation ball valve BQ41, BQ47, BQ71. Liquefied petroleum gas ball valves, gas ball valves Q41N, Q11N. The ball valve Q45F, Q44F, Q48F, KHB3K, Y-type ball valve YQ42F, four-way ball valve Q46F. Eccentric half ball Q340F / H. Lined ball valve Q41F46. Plastic ball valve Q41F-6S, Q11F-6S, Q61F-6S. The sewage Ball Valves QP41F QP41M, PQ41M. Long-distance pipeline ball valve, cryogenic ball valves DQ41F spray pulverized coal ball, unloading the gray ball valve MQ647 MQ47. Resistance to sulfur ball valve KQ347Y. V-type ball valve VTQ41. Italian ultra-thin type ball valve Q71H-64 wafer type ball valve Q71F, Q971, Q671F. Vacuum ball valve GU, vacuum electric ball GUD, vacuum pneumatic ball GU-10/16/25/30/40/50/65/80/100KF/G/F, internal thread ball valve Q11F, Q21F two ball valve Q11F-1000WOG,. three ball valve Q11F-1000WOG,. O-ball valve, spring valve, track ball, double ball valve with scale adjustment valve, bevel ball valves YHQ41, eccentric ball valve Q40F Q340F, Q340H, coat-style eccentric ball valve, side-mounted eccentric ball YZQ340. Stainless steel ball valve Q41W Q41F, carbon steel ball valves, forged steel ball valve, brass ball valve Q11F-16T, aluminum alloy ball valve Q41F-10L tankers ball valve the CQA-25 and other products. 
 The ball valve price list of details of imports of ball valve ball valve chart ball valve standard valve ball valve type ball valve applications Ball size ball valve price list ball valve working principle of ball valve installation schematic ball valve specifications Ball Valves internal structure 
 Body material: steel, stainless steel, forged steel, chrome molybdenum steel, brass, sealing surface material: F, F46, N,, SM, H, Y, and W, G,. Working pressure 1.6-50MPA The working temperature of -196 ° C - 550 ° C. Valve diameter the DN3-DN600. Connection: flange, folder, welding, internal thread, clamps, ferrules. Transmission: Manual, worm gear, pneumatic, electric. Applicable medium: water, oil, gas, steam, acids. Manufacturing standards: GB GB, HG, American standard API, ANSI, JIS JIS. 
 Ball valves and plug valves belong to one type of valve, the difference in the closure of a sphere, a sphere around the body centerline rotation to achieve open, closed a valve. Ball valve in the pipe is mainly used to cut distribution and change the media flow direction. The ball valve is a new type of valve in recent years has been widely used, it has the following advantages: a small fluid resistance, equal to the drag coefficient with the length of the barrel. Two. Simple structure, small size and light weight. 3. Reliable, close the valve sealing surface material widely used plastic, good sealing, has been widely used in the vacuum system. 4. Easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation of 90 °, to facilitate remote control. 5 Easy maintenance, simple valve structure, the seals are generally activities, removal of the replacement is more convenient. 6. In the fully open or fully closed, the ball and seat sealing surface and the dielectric isolation, through the media, does not cause erosion of the valve sealing surface. 7. Wide scope of application, the path from childhood to a few millimeters to a few meters from the high vacuum to high pressure can be applied. 
 The ball valve structure can be divided into: a floating ball valve: The ball valve is floating in the medium pressure, the sphere can produce a certain displacement and pressed on the export side of the sealing surface to ensure that the Sealing. Floating ball valve of simple structure, good seal, but the sphere to work under medium load all pass the export seals, and therefore to consider the ring material can stand the sphere medium work load. This structure is widely used in low-pressure ball valve. Second, the fixed ball: The ball valve is fixed, compression does not produce mobile. Fixed ball valve with a floating valve seat, by the media pressure, the valve seat to move, and seals pressed on the ball, in order to ensure sealing. Usually in with the ball in the upper and lower shaft fitted with bearings, operating torque, suitable for high pressure and large diameter valves. Valve seals in order to reduce the operating torque of the ball valve and increase the reliability of the seal, in recent years, both the pressure in the sealing surface between the note a special lubricant to form a layer of film, which enhances the sealing, but also reduce operating torque, more suitable for high pressure large diameter ball valves. Third, the elastic ball valve: The ball valve is flexible. Ball and the valve seat ring made of metallic materials, sealing pressure greatly rely on the pressure of the medium itself has reached less than sealing requirements, you must apply force. This valve is applicable to high temperature and pressure medium. Elastic sphere is the bottom of the sphere wall to open a flexible tank, to obtain flexibility. When the channel is closed, the wedge-shaped head of the stem so that the sphere up on compression to seal with the valve seat. To release the wedge-shaped head before rotating sphere, the sphere followed by restoration of the original prototype, a small gap between the ball and valve seat sealing surface can reduce the friction and operating torque. 
 Ball valve according to the channel positions can be divided into straight-through, tee and rectangular type. The latter two ball valves for the distribution media and change the flow of media. The ball valve installation and maintenance should note the following: 1. Left rotary position of the valve stem. 2 can not be used as a throttle. With transmission valve should be installed upright. 
 Pao-teh, ball valves have been widely used in a variety of petroleum, chemicals, liquefied petroleum gas, to drainage, food, pharmaceutical, power generation, paper, urban construction, mining, boilers, steam systems, municipal, aviation and other fields, and the daily lives of residents. Pao-teh, products sold throughout the country, high quality, efficient service, won the trust of users and the widespread praise. 
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