How to adjust the on-off direction diagram of double acting pneumatic butterfly valve if it is not closed in place? With the improvement of people's environmental awareness and the restriction of environmental protection departments on various kinds of noise, especially in recent years, due to the continuous expansion of cities and the demand for urban power grid transformation, many transformers are sometimes built in commercial and residential areas, so the noise problem of transformers becomes very prominent
The noise of transformer not only pollutes the environment, but also endangers human health
