Blind flange is a type of flange used to connect pipelines. It is a flange without a hole in the middle and can be used to seal pipeline openings. It is a detachable sealing device.
Blind plates can be easily installed on flanges and secured with bolts and nuts to ensure temporary closure of pipelines.
Type classification
Blind flange,Spectacle Blind Flange, plug plate, and gasket ring (plug plate and gasket ring are mutually blind)
Types of forms
FF,RF,MFM,FM,TG,RTJ
Materials
Carbon steel, stainless steel, alloy steel, copper, aluminum, PVC, PPR, etc
International standard
ASME B16.5/ASME B16.47/GOST12836/GOST33259/DIN2527/SANS1123/JIS B2220/BS4504/EN1092-1/AWWA C207/BS 10
Main components
Blind flanges include the flange itself, blind plates or covers, as well as bolts and nuts.
Size
The size of blind flange usually varies according to the diameter and requirements of the pipeline, and can be customized for production to adapt to different pipeline sizes.
Pressure rating
Blind flanges are suitable for various pressure rating pipeline systems, and their pressure ratings generally range from 150 # to 2500 #.
Characteristic
1. Blind plate: The central blind plate or cover allows for temporary closure of the pipeline, facilitating maintenance, cleaning, inspection, or preventing medium leakage.
2. Mobility: Blind plates can be easily installed or removed for easy operation and maintenance.
3. Bolted connection: Blind flanges are usually connected using bolts and nuts to ensure sealing and safety.
Application scope
Blind plates are mainly used to completely isolate the production medium and prevent production from being affected or even causing accidents due to inadequate closure of the shut-off valve
1. Chemical industry: Pipeline systems used for processing chemicals.
2. Petroleum and natural gas industry: widely used in oil and gas transmission and processing processes.
3. Electric power industry: used for maintenance and repair of pipeline systems.
4. Water treatment: It has certain applications in water treatment plants and water supply systems.
Advantages and disadvantages
1. Advantages:
Provides flexible sealing solutions, facilitating maintenance and repair of pipeline systems; The movable blind plate design makes operation more convenient.
2. Disadvantage:
In situations where frequent opening and closing are required, it may affect the operational efficiency of the system; Installation and maintenance require certain skills and experience.
Post time: Jan-16-2024
