Concentric Butterfly Valve
The concentric butterfly valve
is characterized by the stem center, disc center and body center in the same position. Such structures are simple to make. The common wafer rubber lined butterfly valves
are of this type. The drawback is that the disc and seat are always in the extrusion, scraping state, large resistance, fast wear. In order to overcome squeeze, scratch, seal performance, seat basically uses rubber or polytetrafluoroethylene elastomeric material, but also because seal material is used on the limit of temperature, this is why traditionally people think the butterfly valve does not bear high-temperature reason.
Concentric Butterfly Valve Products:
Wafer Concentric Butterfly Valve is used for petroleum, water and electricity, ship, water supply and drainage and other systems.
New Type Wafer Concentric Butterfly Valve is used for gas pipelines and water course of light industry, electric power, petrochemical system.
Flexible Flanged Concentric Butterfly Valve is used in many fields such as petroleum, chemical industry, metallurgy, water and electricity etc.
Fire Protection Groove end Concentric Butterfly Valve is used in fire protection system .
Flanged Concentric Butterfly Valve is used in construction, chemical, pharmaceutical and other industries.
Wafer Concentric Butterfly Valve with Position Indicator is used in water supply and drainage, building fire control systems and other pipelines.
Therefore, the central butterfly valve
is basically under the condition of temperature below 60 degrees and pressure below 25 kilograms. The simple structure of the centric butterfly valve
focuses on the sealing of the rubber seat and the sealing between the rubber seat and the stem. Every middle line butterfly valve
delivered by ZhengFeng will not give up the strength and pressure test process of each one because of its simplicity, thus ensuring the perfection of this kind of valve. Due to its simple structure, ZhengFeng also pays special attention to its appearance. The ductile iron butterfly valve
adopts advanced casting process of inner and outer coating sand, which ensures that every casting mark on the valve body and even the handwriting on the small 2-inch valve body is clearly visible. Butterfly valve manufacturers