FluidTech News

 What Happens When a CDLF Multistage Pump Operates Away from Its Design Point? CDLF vertical multistage pumps are widely used in water supply systems, boiler feed applications, industrial circulation, and pressure boosting. They are known for high head, compact structure, and stable performance. However, in real-world operation, many pumps do not run at their original design point for long periods of time. At first, everything seems normal. But long-term operation away from the design condition can gradually affect efficiency, stability, and service life. For technical specifications and models, visit: 👉 https://www.scpv.cn/pumps/CDL.html 1. What Does “Operating Away from Design Point” Mean? Every multistage pump has a Best Efficiency Point (BEP) defined by: Rated flow Rated head Optimal hydraulic balance When the actual operating flow is consistently lower or higher than this range, the pump is considered to be running off-design. This does not immediately cause failure — but it ...

 How Gear Oil Pumps Achieve Stable Delivery: Explained Through Meshing Volume Changes In industrial lubrication, hydraulic systems, and fluid circulation applications, gear oil pumps are widely chosen for their reliable delivery and long-term stability. But have you ever wondered what makes them so consistently effective? The key lies in something fundamental to their design: 👉 the predictable change of meshing volume between the gears. To explore available gear oil pump models and specifications, visit: https://www.scpv.cn/pumps/KCB.html 1. Gear Pumps Deliver Fluid Based on Meshing Volume Unlike centrifugal pumps that rely on kinetic energy to move fluid, a gear oil pump works on a positive displacement principle. Pressurized flow is generated by the repetitive change in internal volume as two gears rotate and mesh. Here’s how it works in each revolution: Suction: As the teeth of the driving and driven gears separate, the space between them expands, creating a low-pressure area t...

 How Do Different Flow Adjustment Methods Affect Metering Pump Accuracy? In dosing and chemical injection systems, the key value of a metering pump is accuracy, not simply capacity or speed. In practice, many dosing deviations are not caused by the pump itself, but by how the flow rate is adjusted. Different adjustment methods can lead to very different long-term accuracy results. 1. What Determines Metering Pump Accuracy? In principle, the output flow of a metering pump depends on two factors: Displacement per stroke Number of strokes per unit time Flow adjustment methods work by controlling one or both of these variables. The way this control is applied has a direct impact on dosing stability and repeatability. 2. Stroke Length Adjustment: More Stable at Low Flow Stroke length adjustment changes the effective displacement of each stroke. Main characteristics: Predictable volume per stroke Good repeatability Better performance at low dosing rates For applications with long-term, s...

 Magnetic Drive Pumps: What You Must Know Before Use Magnetic drive pumps are widely used in chemical, plating, pharmaceutical, and wastewater applications because they offer leak-free operation and high safety for corrosive and hazardous liquids. But good performance doesn’t come automatically — proper use and awareness of common issues are key. 👉 Learn more about magnetic drive pump options here: https://www.scpv.cn/cilibeng/ 🚀 Why Magnetic Drive Pumps Are Popular Magnetic drive pumps transfer torque from the motor to the pump’s internal rotor without a shaft seal. This eliminates a primary leakage path found in traditional pumps, making these pumps ideal for: ✔ Corrosive acids and alkalis ✔ Toxic or volatile fluids ✔ Closed, sealed systems ✔ Environments with strict safety or environmental requirements 🔍 Top 4 Things to Watch Out For Even though magnetic drive pumps are robust, several common pitfalls can affect performance or shorten service life: 1️⃣ Ensure the Pump Is Fill...

 Why Does a Vacuum Pump Sometimes “Fail to Pull”? Understanding the Real Reason from Gas Flow Behavior In many industrial applications, a common complaint is: “The vacuum pump is running, but the vacuum level just won’t go down.” At first glance, this looks like a pump failure. In reality, most vacuum problems are not caused by the pump itself, but by how gas behaves and flows inside the system. 👉 Learn more about different vacuum pump types here: https://www.scpv.cn/zhenkongbeng/ 1. What a Vacuum Pump Actually Does A vacuum pump does not “create vacuum” directly. Its real function is much simpler: It continuously removes gas molecules from a closed space. Vacuum level is determined by a balance: how fast gas is removed by the pump how fast gas enters the system (leakage, desorption, process gas, etc.) If gas enters faster than the pump can remove it, the vacuum level will stop improving — no matter how long the pump runs. 2. Gas Flow Changes as Pressure Drops Gas does not behave ...

 Shielded (Canned Motor) Pumps: How They Work and Why They’re Essential for Safe Fluid Handling In industrial settings—such as chemical processing, pharmaceuticals, surface treatment, and advanced materials manufacturing—handling corrosive, hazardous, or flammable liquids safely is a top priority. In these applications, traditional sealed pumps often struggle to balance reliability and safety, especially when leakage is unacceptable. This is where shielded pumps—also known as canned motor pumps—offer a structural advantage. Their unique design eliminates dynamic seals, drastically reducing leakage risks and improving operational safety. 👉 Learn more about shielded pump options here: https://www.scpv.cn/pumps/PBG.html What Is a Shielded (Canned Motor) Pump? A shielded pump integrates the motor and pump into a single, fully enclosed unit. Rather than having an external motor connected to a shaft with mechanical seals, the motor rotor and pump rotor are aligned inside a sealed housin...