FluidTech News

 How Does Intermittent Operation Affect Diaphragm Pump Service Life? In many industrial applications, diaphragm pumps do not operate continuously. Instead, they often work under intermittent conditions with frequent start-stop cycles. Although this operation mode can meet production requirements, repeated mechanical movement may gradually cause fatigue accumulation inside the pump. Shanghai Shangcheng Pump & Valve believes that understanding fatigue damage mechanisms is important for improving diaphragm pump reliability, especially in applications involving frequent switching, pressure fluctuations, or long operating cycles. More information about diaphragm pump structure, working principles, and selection guidance can be found here: https://www.scpv.cn/news/875.html Why Does Fatigue Damage Occur in Diaphragm Pumps? A diaphragm pump works by using the reciprocating movement of the diaphragm to change the pump chamber volume, allowing the medium to be transferred through suction...

 Sanitary Stainless Steel Rotary Lobe Pump Maintenance Guide: Key Points for Long-Term Stable Operation In food processing, beverage, dairy, pharmaceutical, biotechnology and chemical industries, sanitary stainless steel rotary lobe pumps are widely used for transferring high-viscosity and hygiene-sensitive fluids. With advantages such as gentle conveying, stable performance and easy cleaning, rotary lobe pumps have become an important part of modern industrial fluid handling systems. However, the service life and operating efficiency of a rotary lobe pump are not only determined by the equipment quality. Proper maintenance and management are also essential to ensure long-term reliable operation. Shanghai Shangcheng Pump Valve believes that regular inspection, correct operation and preventive maintenance can effectively reduce equipment downtime and improve production efficiency. 1. Regular Cleaning to Maintain Hygienic Performance Sanitary rotary lobe pumps are mainly used in indu...

 Diaphragm Pump Manufacturer: Reliable Fluid Transfer Solutions from Shanghai Shangcheng Pump Valve In modern industrial fluid transfer systems, equipment stability and reliability directly affect production efficiency. A professional diaphragm pump manufacturer not only provides products, but also offers complete solutions based on different working conditions, media characteristics, and application requirements. Shanghai Shangcheng Pump Valve focuses on the research, manufacturing, and application of diaphragm pumps, providing reliable pumping solutions for industries such as chemical processing, environmental protection, food, pharmaceuticals, and industrial manufacturing. From Manufacturing to Application: The Strength Behind Stable Conveying A diaphragm pump works through the reciprocating movement of the diaphragm to create changes in the pump chamber volume, completing the suction and discharge process. Because the transmission components are isolated from the transported me...

 QW Submersible Sewage Pump Current Rising Abnormally? Possible Causes Behind the Problem In wastewater treatment systems, municipal drainage projects, industrial wastewater transfer, and construction site dewatering applications, the QW submersible sewage pump is widely used due to its compact structure, reliable performance, and excellent solids-handling capability. However, during long-term operation, some users encounter a common issue: the operating current gradually increases beyond the rated value. Although the pump may still be running normally, abnormal current is often an early warning sign that should not be ignored. 1. Impeller Blockage or Increased Hydraulic Resistance One of the most common reasons for rising current is partial blockage inside the impeller or pump casing. Fibers, plastic debris, sludge deposits, or solid particles can accumulate around the impeller, increasing rotational resistance and forcing the motor to draw more power. Regular inspection and clean...

 Internal Recirculation in CDLF Stainless Steel Multistage Pumps at Low Flow Conditions | Shanghai Shangcheng Pump Valve In many industrial water supply and fluid transfer systems, CDLF stainless steel multistage centrifugal pumps are valued for their high efficiency, stable pressure, and compact structure. However, one operating condition that is often overlooked is prolonged operation in the low-flow region. While the pump may appear to run normally from the outside, internal recirculation can gradually develop, affecting performance and service life. More information about CDLF stainless steel multistage pumps can be found here: https://www.scpv.cn/pumps/CDLF.html What Is Internal Recirculation? Internal recirculation occurs when the pump flow rate drops significantly below its designed operating range. Under these conditions, the liquid flow inside the impeller passages becomes unstable. Instead of moving smoothly from inlet to outlet, part of the fluid circulates repeatedly wi...

 How Increased Suction-Side Resistance Affects the Self-Priming Process of FPZ Self-Priming Pumps Self-priming pumps are widely used in chemical processing, environmental protection, water treatment, and industrial liquid transfer applications. Their ability to remove air from the suction line and establish liquid flow without external priming makes them highly efficient and convenient. However, many users encounter situations where the pump appears mechanically sound, yet the self-priming time becomes significantly longer or the pump fails to draw liquid properly. In many cases, the root cause is increased resistance on the suction side. What Is Suction-Side Resistance? Suction-side resistance refers to flow losses caused by components installed in the inlet pipeline, such as: Excessive pipe bends Foot valves Strainers and filters Reducers and fittings Long suction pipelines Partially blocked piping When these restrictions increase, the pump must work harder to evacuate air from t...