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 pneumatic butterfly valve for suspended ball valve The selection of specifications of pneumatic butterfly valve for suspended ball valve depends on the magnitude of 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, The specification of the valve and ball valve shall be selected according to the accurate value calculated and the initial force of the ball valve preloading shall be determined