Flange connections

Flange connection is to two pipes or pipe pieces of equipment, each first end fixed to the top flange, the flange gasket between the two flanges together, bolted together, fixed. Some pipes or fittings equipment, already comes with flange, it also belongs to the flange connection.

 This connection is mainly used for non-ferrous metal pipes and flanges valves, cast iron pipes, rubber lined pipe connections, process equipment and flange connections also flange connection, the main advantage is the easy removal of the flange connection, high strength, density good, but must pay attention to the mounting flange must take to maintain a balance on both sides of the flange, flange sealing surface can not have a bump, where the manufacturer must also be noted that during transport flange sealing surface can not have a bump, and When you install must be clean, flange gaskets used to design requirements and more choice, can not be used indiscriminately.

Flanged connections are important to the main pipe fittings equipment construction time.

 Flange connection flange with threaded connection (including threaded flange, which is connected to the flange wire), as well as welding flanges. High pressure and large diameter flange welded flange connection mode, low pressure small diameter flange threaded flange connection mode, flange different caliber, different pressures flange, flange thickness and bolt diameter and the number of connections is different. Depending on the pressure flange, flange gasket there are different materials, there is a low pressure asbestos pads, high pressure asbestos pads, as well as metal asbestos mats, in accordance with the flange pressure rating procurement asbestos pad.

Flanged pipe fittings in construction and easy to use when disassembling, able to withstand greater pressure in the industrial pipe fittings equipment installation, flange connection is very common, is widely used in the family may not see the flange connection, if a boiler room or production site, everywhere flanged pipe and equipment connections.

Flange connections can now be said to be very common, as long as the construction site, there flange connection, flange connection is very easy to install, simple to operate, but also easy to disassemble.

How to properly regulate the fastening flange bolts

First, as ready fastening flanges need to use tools including wrenches (wrenches and adjustable wrench) bolts, flanges and other related tools

Next, as shown in the bolts had to be put away tight gasket, and then another flange smooth on top, each one bolt hole to be aligned. Do not place the note after a smooth touch flange.

Next, the most important is when the bolt according to the angle, the first hand hold the bolt diagonal, until the flange can not shake up, note that at this time to guarantee the correctness of the position of the gasket.

Then, tighten the bolts with a wrench vigorously, until it stops, then the note is facing tight angle, while tight look, or the other side will tilt.

Then, another bolt also installed on the diagonal, the same is also a tight angle, while tight look, head to prevent warping.

Finally, all the bolts are eleven strengthened by diagonal sequence tighten again to prevent loosening, after adding other connections to such protection does not leak fastening flanges.

Something about flange

Flange, also known as flanges or flange flange. Flanges are interconnected between the tube and pipe parts for the connection between the pipe ends; import and export are also useful in the device on the flange for connection between the two devices, such as the reducer flange. Flange connection or flange joints, is defined by the flanges, gaskets and bolts of the three interconnected as a combination of a set of detachable connection seal structure. Pipe flange means plumbing fixtures in piping flanges, with import and export flange on the equipment means equipment. There are holes on the flange, so that the two flange bolts tightly connected. Between the flange sealing gasket. Threaded flange connection points (threaded connection) flanges, welded flanges and flange clip. Flanges are used in pairs, low-pressure pipe flange can be connected using wire, four kilograms more than the pressure of the use of welding flanges. Between the two flange gaskets, and then secured with bolts. Different flange thickness at different pressures, the bolts are used is also different. Pumps and valves, and pipe connections when local these facilities and equipment, but also made the corresponding flange shape, also known as the flange connection. Any use of the two planes simultaneously closed around the bolted connection components, generally known as the "flange", such as connecting ventilation ducts, this type of parts can be called "flange parts." But this is only a partial connection devices, such as flanges and pump connections, bad water pump called "flange parts." Relatively small, such as valves, etc., can be called "flange parts."