The blocking effect of objects and the influence of sound energy are limited near the sound source, so as to block the noise source, such as the sound barrier gate, sound barrier window, etc
Shanghai Dongfeng Pump Valve Factory is committed to noise control of water pump units and air conditioning units. Welcome to inquire
Selection of specifications of electric butterfly valve for suspended butterfly valve The selection of specifications of electric butterfly valve for suspended butterfly valve depends on the magnitude of the seismic force required to prevent pipeline vibration. If the required seismic force can be calculated through pipeline dynamic analysis according to the quality, stiffness and periodic or impact force of external action on the pipeline, Then the specification of the valve butterfly valve shall be selected according to the calculated accurate value and the initial preloading force of the butterfly valve shall be determined