China Ball Valves suppliers

China Ball Valves suppliers S.S. 304/316 investment cast body Full Port ANSI-CLASS 150LB/ JIS10K /PN16 Suitable for full range of liquids and gas Pure Teflon seals and seats Temperature range : -10 to 120 Degrees C Low operation torque 100% individually tested Blowout-proof stem Heavy duty stainless steel handle Designation - Material Body - SS 316/ CF8M Ball - SS 316/ CF8M Seat - RPTFE Cap - SS 316/ CF8M Stem - SS 304 Stem Packing - SS 304 Body Seal - PTFE Stem Seal - PTFE Bolt - SS 304 Gland - SS 316/ CF8M Stopper - SS 304 Handle - SS 316/ CF8M Snap Ring - SS 304 Nut - SS 304 Unit:mm DN L D D1 D2 B Z-d H w 15 130 95 65 45 14 4-14 78 130 20 140 105 75 55 14 4-14 84 130 25 150 115 85 65 14 4-14 95 160 32 165 140 100 78 16 4-18 150 160 40 180 150 110 78 16 4-18 150 180 50 200 165 125 100 16 4-18 170 200 65 225 185 145 120 18 4-18 195 240 80 250 200 160 135 20 8-18 215 240 100 305 220 180 155 20 8-18 250 280 125 360 250 210 185 22 8-18 265 300 150 400 280 240 210 24 8-23 270 300 200 460 340 295 265 26 12-23 330 350 Flange ball valve :Its closing part is a sphere, and the sphere rotates around the center line of the valve body to open and close a valve. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.The flange ball valve can be divided into straight-through type, three-way type and right-angle type according to its channel position. The latter two ball valves are used to distribute the medium and change the flow direction of the medium. 1. Floating ball valve: The ball of the ball valve is floating. Under the action of the medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the sealing of the outlet end. The floating ball valve has a simple structure and good sealing performance, but the load of the ball bearing the working medium is all transferred to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. This structure is widely used in medium and low pressure ball valves.Xinhong ball valve is belong to floating ball valve. 2. Fixed ball valve:The ball of the ball valve is fixed and does not move after being pressed. The fixed ball valve has a floating valve seat. After being pressurized by the medium, the valve seat moves, so that the sealing ring is tightly pressed on the ball to ensure the sealing. Bearings are usually installed on the upper and lower shafts with the ball, and the operating torque is small, which is suitable for high-pressure and large-diameter valves. In order to reduce the operating torque of the ball valve and increase the reliability of the seal, oil-sealed ball valves have appeared in recent years. Special lubricating oil is injected between the sealing surfaces to form an oil film, which not only enhances the sealing performance, but also reduces the operating torque. , more suitable for high-pressure and large-diameter ball valves. 3. Elastic ball valve:The ball of the ball valve is elastic. Both the ball and the valve seat sealing ring are made of metal materials, and the sealing specific pressure is very large. The pressure of the medium itself cannot meet the sealing requirements, and external force must be applied. This valve is suitable for high temperature and high pressure medium. The elastic sphere is obtained by opening an elastic groove at the lower end of the inner wall of the sphere to obtain elasticity. When the channel is closed, the wedge head of the valve stem is used to expand the ball and compress the valve seat to achieve sealing. Before turning the ball, loosen the wedge head, and the ball will return to its original shape, so that there is a small gap between the ball and the valve seat, which can reduce the friction and operating torque of the sealing surface. China Ball Valves suppliers website:http://www.zjxhvalve.com/ball-valves/