What is a flange valve?
The flange valve is a special type of valve where the increased surface, usually in the shape of a lip or ring at the end of the valve mounting, connects to the groove to the lining to which it connects. This gives the valve connection increased strength in heavy pipes, such as strength used in the chemical and oil industries. Visual illustrations of what the flange looks like can normally be seen on the wheels of railway cars or on the City Trolley cars, where the steel lip or flange of the wheel fits in the groove on the track that runs. The sizes of flange and joints are made to match one of the several dominant standards, including the British standard (BS) received from the European standard (EN) 1092 in June 2007, to which the US Society Standard (ASME) also responds. Within the US, you can also produce a flange valve with a similar US national standard institute (ANSI).
Types of flanges widely used in industrial environments usually monitor one of five dominant shapes, including male and female (M&F), raised faces (RF), ring type (RTJ), flat faces (FF) and tongue and groove (T&G). There are also several main types of flange valve valve models that use these flange shapes, including ball valves, butterfly valves, control valves and gate/drop valves. Flange fittings are also made of one of four primary metals, including steel, cast iron, aluminum or copper. The main purpose that the flange connection serves on any design of the flange valve valve is that it increases the surface area of the paired surfaces, which increases the strength of the material that forms the connection. The internal and outer surface diameter of the flange is measured precisely to measure this strength and evaluate the valve.
The RF flange system is considered to be the most widespread model where the ring is a flat circular surface of the connecting plate, which is bolted inline on the line of the pipeline. The size of the flange in the RF design is directly proportional to the pressure that is mo moThe flange has been built to handle the ASME model B16.5, for example with a flange height of 1.6 millimeters (0.063 or 1/16
Other types of flanges are used for very specific purposes. FF valve FF has a fluster face built with less flexible, albeit durable material, usually cast iron. FF flange as ASME B31.1 must be mounted on the face made of carbon steel and joints or the fragile nature of the iron flange can fracture.
articulated pRomes of the circle type are among the most complex and in some cases use sealing rings or seals made of steel that prevent flange from actual physical contact with the joint. A broken flange valve can easily result if the technician crushes the seal after the connection, because some RTJ flange are to make contact with the opposite and others are not. The design of RTJ is mainly used in high pressure and elevated applications.
While flange proposals often look very similar and the Ansi flange can be very similar to ASME flange after visual inspection, must not be mixed and matched. If RTJ-, T&G- or F&M are designed to fit the valve valve together, what, NTACT braids will not combine accurately and the valve fails. Since 2011, there are also no seals that have different flange settings on each side, such as F&M on one and RTJ on the other, so that from non -functional seals there may be dangerous leaks in a defective assembly.