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Bundor - Butterfly, Gate, Check, Ball, Globe Valve Manufacturer, Supplier & Distributor
What are the three eccentricity of the triple eccentric butterfly valve
Posted by Bundor valve
The sealing performance of traditional hard-sealed butterfly valves is not guaranteed, and the leakage is large. In order to change this situation, hard-sealed butterfly valves have undergone many reforms, and the triple-eccentric butterfly valve was born.The characteristic of the triple eccentric butterfly valve is that the high temperature and corrosion resistant alloy material is overlaid on the sealing surface layer of the valve seat, and the multi-layer soft laminated sealing ring is fixed on the butterfly plate. This process makes the triple eccentric butterfly valve better than traditional butterfly valve products.More resistant to high temperature and high pressure environments, and more resistant to corrosion.
Specifically, the advantages of the three-eccentric structure of the hard-sealed butterfly valve are:
The unique design of triple eccentricity makes the metal hard seal more labor-saving. When the valve is opened and closed, there is no friction between the butterfly plate and the valve body during the rotation process. When the valve is closed, the torque of the transmission mechanism can be increased to provide a compensation Sealing greatly improves the sealing performance of the triple eccentric butterfly valve and prolongs the service life of the butterfly valve.
What are the three eccentricities of the triple eccentric butterfly valve?
The first eccentricity is that the valve shaft is located behind the valve plate shaft, so that the seal can completely and closely contact the entire valve seat.
The second eccentricity is that the centerline of the valve shaft deviates from the centerline of the pipeline and the valve to avoid interference from the opening and closing of the valve.
The third eccentricity is that the valve seat cone axis deviates from the center line of the valve shaft, which can eliminate friction during closing and opening, and achieve a uniform compression and sealing effect around the entire valve seat.
The above is the introduction of the triple eccentric butterfly valve. The triple eccentric butterfly valve is a kind of high performance butterfly valve. It is currently used in many fields, and has even replaced gate valves, globe valves, ball valves and other products in some fields.
Specifically, the advantages of the three-eccentric structure of the hard-sealed butterfly valve are:
The unique design of triple eccentricity makes the metal hard seal more labor-saving. When the valve is opened and closed, there is no friction between the butterfly plate and the valve body during the rotation process. When the valve is closed, the torque of the transmission mechanism can be increased to provide a compensation Sealing greatly improves the sealing performance of the triple eccentric butterfly valve and prolongs the service life of the butterfly valve.
What are the three eccentricities of the triple eccentric butterfly valve?
The first eccentricity is that the valve shaft is located behind the valve plate shaft, so that the seal can completely and closely contact the entire valve seat.
The second eccentricity is that the centerline of the valve shaft deviates from the centerline of the pipeline and the valve to avoid interference from the opening and closing of the valve.
The third eccentricity is that the valve seat cone axis deviates from the center line of the valve shaft, which can eliminate friction during closing and opening, and achieve a uniform compression and sealing effect around the entire valve seat.
The above is the introduction of the triple eccentric butterfly valve. The triple eccentric butterfly valve is a kind of high performance butterfly valve. It is currently used in many fields, and has even replaced gate valves, globe valves, ball valves and other products in some fields.