The ball valve flange is widely used in many areas. For example, it can be seen on pipelines used in the gas, oil, chemical, food industries, as well as in other areas. The steel flanged ball valve is used for transportation of oil products, hydrocarbons, liquids and gases as a stop valve. In addition, this device has found the widest application in such areas as ventilation, water and gas supply. It is also actively used in agriculture and shipbuilding. This device is designed to shut off the flow or to discharge it into a pipe. The ball valve flange is also used for steam supply, as well as for operation in temperature conditions up to 250 degrees Celsius.
It can not be used for throttling. This type of crane can not be used to adjust the flow head of the shut-off device. This is due to the fact that such devices have only two states: fully closed or open. These devices use a ball as a locking part, which is why they got their name. Cranes are produced from three types of materials, the choice of which depends on the proposed working environment. Stainless steel is designed to function in an aggressive; Art.20 is designed to work under normal conditions; 09Г2С - for sulfuric execution. It is inadmissible to use a ball flanged valve in pipelines where there is a possibility of passing a flow of uncleaned liquids with solid impurities. This can cause abrasion of the running gear, and then leaks. Do not use this type of device as a shut-off for muddy, viscous or viscous liquids. There is a high risk of sediment, which can adversely affect the useful life of the device. It is necessary to strictly observe the norms of use of this type of equipment, prescribed in the instructions. On the crane, you can not increase the load, apply it at partial opening as a regulator, the flow strength also does not follow.
The ball valve steel flanged can have certain design features. The first type has a locking part that is not connected to the spindle. In relation to it, the ball element moves freely. When the pressure of the medium acts on the side of the entrance to the ball, it is pressed against the sealing element, ensuring sealing and closing of the flow. Such a design can be used with a diameter not exceeding two hundred millimeters. This choice of dimensions makes it possible to reduce the load created by the locking element with respect to the O-ring.
A ball type flange ball valve of the second type presupposes finding the ball on the supports. The locking product in such structures is mounted due to the presence of an axial protrusion. When there is pressure from the saddle, pressure is applied to the spherical support. This design of the ball valve allows you to reduce the force required to lock it or unlock it.