The triple offset metal hard seal butterfly valve refers to those butterfly valve whose shaft axis center of the valve stem deviates from the center of the disc and the center of the valve body at the same time, and also the rotation axis of the valve seat and the axis of the valve body channel have a certain angle. This kind of butterfly valve is called triple offset butterfly valve.
Triple offset metal hard seal butterfly valve,also called triple eccentric metal hard seal butterfly valve, is one kind of butterfly valves.
The characteristics of the triple eccentric hard seal butterfly valve are that the high temperature and corrosion resistant alloy material is welded on the sealing surface of the valve seat, and the multi layer soft stacked sealing ring is fixed on the butterfly plate. This technical process makes the triple eccentric butterfly valve more resistant to high temperature and high pressure environments, more corrosion resistant than the traditional butterfly valves. Today we are gonna talk about what are the three offsets in triple offset butterfly valve:
the three offsets in triple eccentric butterfly valve:
The first offset is that the center of the valve shaft is located behind the valve plate axis, which allows the sealing part to have a full tight encircling contact with the entire valve seat;
The second offset is that the center line of the valve shaft deviates from the center line of the pipeline and the valve, which can avoid interference by the opening and closing of the valve;
The third offset is that the valve seat cone axis deviates from the center line of the valve shaft, which eliminates friction during closing and opening, and achieves a even compression sealing performance around the entire valve seat;
the applications of triple eccentric metal hard seal butterfly valve:
The triple eccentric metal hard seal butterfly valve is one kind of high performance butterfly valve. It is currently widely used in many fields and has even replaced gate valves, globe valves, ball valves and other industrial valves in some fields;
The triple eccentric butterfly valve is widely used in metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and other industrial pipelines with medium temperature ≤425℃, for regulating flow rate and cutting off the fluid. The material of triple eccentric hard seal butterfly valve can be: cast iron, cast steel and stainless steel;
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