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Forging supplier Figure 8 blind flange (spectacle blind flange) is actually a combination of PADDLE BLANK FLANGE AND paddle spacer flange. PADDLE BLANK FLANGE itself has a certain thickness, if to remove, this thickness is guaranteed by the hollow paddle spacer flange. Spectacle blind flange 锛坰tainless steel spectacle blind flange and carbon steel spectacle blind flange锛?as the name implies is its shape like eight, it is one end of the blind plate, the other end is composed of throttle ring, in the transmission of fluid, the use of throttle ring, cut off the use of blind plate, a bit like the role of the cut-off valve, it can be used to cut off when the valve leakage. Its sealing performance is better. For systems that require complete isolation, it is generally chosen as a reliable means of isolation. There should be two stop valves before and after the figure 8 blind. Replace the spectacle blind flange when they are all closed. Common heat exchanger commissioning and stand-by, reactor commissioning and stand-by, nitrogen pipeline and process pipeline connection, etc. Another feature is obvious logo, easy to identify its installation status. The main function of the eight-figure blind is complete partition, just like a 100% reliable performance, will not be misoperated gate valve role. A spectacle blind - also known as a figure-8 blind-is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets.A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel. The shape is similar to a pair of glasses or "spectacles"-hence the name spectacle blind.One end of the blind will have an opening to allow flow through the pipe during operation and the other end is solid to block flow during maintenance.They are generally installed as a permanent device to separate process piping systems.The whole idea of a spectacle blind is so that one can be absolutely sure that an item of equipment is properly and securely blanked off with no possibility of any flow or leakage through a valve during maintenance.The flow can be diverted to other items of equipment but not just bypassed around the blank as this would compromise the safety function of the spectacle blind.The flow has to valved off and pressure relieved prior to loosening flange bolts and swinging the blind.Forging supplier website:http://www.goldenoceanflange.com/forging/