离心泵在低于负荷运行时会出现过热、严重噪声、不稳定和汽蚀而引起泵的损坏。这时需要一种自动再循环设备,在泵低于负荷运行时,通过旁路实现泵最小流量回流循环。上海大田阀门管道工程有限公司通过多年的研发,不断创新与实践,开发出ZD系列自动再循环泵保护阀,用于防止各种离心泵在低于负荷运行时由于过热、严重噪声、不稳定和汽蚀而引起的损 Centrifugal pump in the load operation is overheating, severe noise, instability and cavitation caused by the pump damage. In this case, an automatic recirculation device is needed to pump the minimum flow back through the bypass when the pump is under load. Shanghai Dita Valves Pipeline Engineering Co., Ltd. through years of research and development, continuous innovation and practice, developed ZD series automatic recirculation pump protection valve, used to prevent a variety of centrifugal pumps in the load operation due to overheating, severe noise, unstable and Cavitation damage caused