Data
| Product Name | Blind flange | ||||||||
| Size | 1/2"-80" DN15-DN2000 | ||||||||
| Pressure | Class150#-Class2500#,PN6-PN25 | ||||||||
| Standard | ANSI B16.5,EN1092-1, SANS 1123, JIS B2220,JIS B2238 DIN2527, GOST 12836,etc. | ||||||||
| Wall thickness | SCH5S, SCH10S, SCH10, SCH40S,STD, XS, XXS, SCH20,SCH30,SCH40, SCH60, SCH80, SCH160, XXS and etc. | ||||||||
| Material | Stainless steel: A182F304/304L, A182 F316/316L, 904L, and etc. | ||||||||
| Carbon steel: A105, A350LF2, S235Jr, S275Jr, St37, St45.8, A42CP, A48CP, E24 , A515 Gr60, A515 Gr 70 etc. | |||||||||
| Application | Petrochemical industry;aviation and aerospace industry;pharmaceutical industry;gas exhaust;power plant;ship building;water treatment,etc. | ||||||||
| Advantages | ready stock,faster delivery time;available in all sizes,customized;high quality | ||||||||
Product Introduction
The formal name of blind flange is flange cover, but some are also called blind flange. It is a flange without holes in the middle, which can be used to plug the pipe orifice. The function of blind flange is the same as that of head and pipe cap, but the difference is that the blind flange seal is a removable sealing device, and the head seal is not ready to be opened again.
There are many types of sealing surfaces of blind flange, including plane, convex, concave and convex, tenon and groove surfaces and ring connection surfaces.
Materials include carbon steel, stainless steel, alloy steel, copper, aluminum, PVC, PPR, etc
The blind flange is mainly used to completely isolate the production medium, to prevent the production from being affected or even causing accidents due to the untight closing of the shut-off valve.
The blind flange shall be set at the position requiring isolation, such as the equipment nozzle, the front and back of the shut-off valve or between two flanges. The spectacle blind is often recommended;
Plug plates can also be used for one-time parts such as pressure and purging, which is often referred to as round blind flange.
Role and Function
The blind flange plays the same role of isolation and cutting off as the head and pipe cap. Because of its good sealing performance, it is generally used as a reliable means of isolation for systems requiring complete isolation. The blind plate is a solid circle with a handle, which is used for the system in the isolation state under normal conditions
The function of blind flange is very important. The blind flange is needed in the repair and maintenance of the pipeline. Without it, if the flow cannot be cut off at the valve of the pipeline, the flow of several meters of pipeline will be affected.
Therefore, since the use of flanged pipes has greatly improved the construction of pipes, the role of blind flanges can also be immeasurable.