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How Do Different Flow Adjustment Methods Affect Metering Pump Accuracy?

 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...
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Magnetic Drive Pumps: What You Must Know Before Use

 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...
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Why Does a Vacuum Pump Sometimes “Fail to Pull”? Understanding the Real Reason from Gas Flow Behavior

 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 ...
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Shielded (Canned Motor) Pumps: How They Work and Why They’re Essential for Safe Fluid Handling

 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...
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Magnetic Pumps for Acid and Alkali Waste Liquid Discharge: A Safer Choice for Industrial Applications

 Magnetic Pumps for Acid and Alkali Waste Liquid Discharge: A Safer Choice for Industrial Applications In industries such as chemical processing, electroplating, pharmaceuticals, and surface treatment, the discharge of acidic and alkaline waste liquids is a routine but high-risk operation. These fluids are often corrosive, volatile, and sometimes toxic. Once leakage occurs, the consequences can extend far beyond equipment damage, involving environmental pollution and safety incidents. As a result, more industrial users are rethinking their pump selection strategy—and magnetic drive pumps are becoming an increasingly popular choice. 1. Acid and Alkali Waste Transfer: Leakage Is the Real Risk From real-world operating conditions, acid and alkali waste liquids typically present several challenges: Strong corrosiveness that accelerates seal wear Long-term continuous operation Frequent start-stop cycles Extremely low tolerance for leakage Traditional centrifugal pumps with mechanical se...
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 Why Screw Pumps Are Ideal for High-Viscosity Colloid Transfer (With Practical Tips) In many industrial processes — such as coatings, adhesives, resins, polymers, and specialty chemicals — handling high-viscosity colloidal fluids presents unique challenges. Traditional centrifugal pumps often struggle under these conditions, resulting in unstable flow, cavitation, overheating, or frequent maintenance. For reliable performance, many engineers choose screw pumps because of their mechanical advantages for viscous, non-Newtonian fluids. If you’re evaluating pump options for demanding media, this guide explains why screw pumps are often the best fit — and what to consider in real applications. 👉 Learn more about industrial screw pumps here: https://www.scpv.cn/luoganbeng/ What Makes High-Viscosity Colloids Difficult to Pump? High-viscosity colloidal materials typically share these traits: Poor fluidity — they resist motion and require significant force to move. Shear sensitivity — high...
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How to Choose the Right Stainless Steel Chemical Pump: A Practical Guide for Industry Users

 How to Choose the Right Stainless Steel Chemical Pump: A Practical Guide for Industry Users In chemical processing, pharmaceuticals, wastewater treatment, plating, and many industrial systems, stainless steel chemical pumps are a foundational piece of equipment. Yet, many engineers and plant managers find themselves choosing the wrong pump because they focus on only one factor—steel material—without taking the full application conditions into account. In real-world operations, this often leads to early failures, frequent maintenance, and unstable performance. In this article, we’ll walk through how to select the right stainless steel chemical pump, what to watch out for, and why application knowledge matters more than just material grades. Why Stainless Steel Chemical Pumps Are Widely Used Stainless steel chemical pumps are popular because they offer a well-rounded set of features: Corrosion resistance for acids, alkalis, and salt solutions Mechanical strength and durability for c...
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