1. The structure is different: the figure-eight valve usually adopts a spherical structure, and there are two mutually perpendicular channels on the sphere, which are in the shape of a figure-eight, and the valve controls the flow of fluid through the two channels. Triangle valve adopts triangular cone structure, and the valve core is triangular. The valve regulates the fluid flow by opening and closing three channels.
2. Different scope of application: The eight-character valve is usually suitable for controlling pipelines with small flow, such as domestic tap water and heating pipelines, while triangle valve can withstand large flow and high pressure, and is suitable for industrial pipelines such as oil, natural gas and chemical industry.