The spectacle blind flange is a safety device used to isolate a section of pipeline or equipment when they need to be inspected or removed from piping system.
The spectacle flanges have three types:
First one is spectacle blind flange,it is the most regular spectacle flange which is also called figure 8.The shape of spectacle flange is like glasses.one part is a blind plate,the other part is a ring which has a same outer diameter with the first part.The two parts are connected with a handle plate.The spectacle blind flange could be produced from one plate,or joint together by welding from three parts: blind plate,ring and handle plate.(How to use a spectacle blind flange)
The second type spectacle flange is called spade,or paddle flange.It is a blind plate with a handle plate.It has a same usage with the blind part of a spectacle blind flange.
The third type spectacle flange is called spacer,it looks like a steel ring with a handle plate.The spacer has a same usage with the ring part of a spectacle flange.The spacer has a same outer diameter with the paddle flange.
Haihao Group can manufacture all the types of spectacle flanges in high quality,except the spectacle flanges,we also can manufacture weld neck flange,slip on flange,blind flange,threaded flange,socket weld flange,orifice flange,our products according to standard ANSI,ASME,BS,DIN,EN,JIS,MSS,GOST etc.(flange standards)