FluidTech News

 High-Precision Micro Dosing: How Digital Pulse Metering Pumps Work and How to Commission Them Accurate chemical dosing is essential in water treatment, chemical processing, laboratories, food production, pharmaceutical systems, and many automated industrial processes. When the required flow rate is very small, simply delivering liquid is not enough—the dosing system must also provide stable, repeatable, and adjustable output. A digital pulse metering pump is designed specifically for these applications. By combining precise diaphragm movement with electronic control, it can deliver small quantities of chemicals while allowing the dosing rate to be adjusted according to actual process requirements. How Does a Digital Pulse Metering Pump Work? Most digital pulse metering pumps use an electromagnetic or motor-driven mechanism to move a diaphragm inside the pump head. During the suction stroke, the diaphragm moves backward and creates negative pressure inside the pump chamber. The inl...

 Explosion-Proof Self-Priming Pumps for Flammable Liquids: What Should You Check Before Selection? Transferring gasoline, kerosene, solvents and other flammable liquids requires more than simply choosing a pump with the correct flow and head. In hazardous industrial environments, pump selection must consider explosion protection, suction conditions, sealing reliability, material compatibility and liquid volatility. For applications involving low-level tanks or frequent loading and unloading, an explosion-proof self-priming pump can be a practical solution. Why Use a Self-Priming Pump in Hazardous Areas? In many oil depots and chemical plants, the liquid level is below the pump installation position. A self-priming pump is designed to evacuate air from the suction line and establish liquid flow after the initial priming procedure. This makes it useful for applications such as: Fuel transfer Solvent handling Tank unloading Tank truck loading and unloading Chemical liquid transfer Low...

 Cutting Sewage Pumps for Fibers and Rags: When Are They the Right Choice? Wastewater does not always contain only water and small solid particles. In many industrial and domestic sewage systems, the real trouble comes from rags, hair, plastic film and long fibers. These materials may not look difficult to pump, but once they wrap around the impeller, they can quickly cause reduced flow, higher motor current or even complete pump blockage. This is where a cutting sewage pump can be useful. Why Are Fibers More Difficult Than Solid Particles? A conventional non-clog sewage pump is generally designed with a relatively large flow passage so that certain solid particles can pass through the pump. Fibrous materials behave differently. Rags, hair and long fibers are flexible and easy to wrap around rotating components. Even relatively small pieces can accumulate around the impeller or inlet. Therefore, when selecting a sewage pump, particle size is not the only consideration. The type and...

 Why Do Chemical Pump Mechanical Seals Keep Leaking? 3 Installation Details You Should Not Ignore Mechanical seal leakage is one of the most common problems during chemical pump operation. Many users replace the mechanical seal repeatedly but still experience leakage after a short period of operation. In many cases, the problem is not only the seal itself — incorrect installation and operating conditions are often the real causes. For chemical pumps, mechanical seal installation details directly affect equipment reliability and service life. 1. Improper Installation Causes Uneven Seal Wear A mechanical seal works by maintaining close contact between the rotating ring and stationary ring to prevent liquid leakage. During installation, problems such as: Damaged sealing faces Incorrect installation position Improper compression adjustment Poor shaft alignment can cause uneven pressure on the sealing surfaces. After continuous operation, abnormal wear may occur, eventually resulting in...

 Gear Oil Pump vs High Temperature Oil Pump: How to Choose the Right Solution for Heat Transfer Oil and Lubricating Oil Transfer Keywords: gear oil pump, high temperature oil pump, heat transfer oil pump, lubricating oil transfer pump, industrial oil pump selection Description: Choosing the right oil pump is critical for stable operation in industrial heating systems and lubrication applications. This article explains the differences between gear oil pumps and high temperature oil pumps, and how to select the suitable pump according to temperature, viscosity and working conditions. Gear Oil Pump vs High Temperature Oil Pump: Selection Guide for Industrial Oil Transfer In industrial production, heat transfer oil and lubricating oil are widely used in heating systems, machinery lubrication, chemical processing and other fields. Choosing a suitable oil transfer pump directly affects system efficiency, equipment life and operating stability. Many users often confuse gear oil pumps with...

Plunger vs. Diaphragm Metering Pumps: How to Choose for Water Treatment Dosing Metering pumps are widely used in water treatment systems to inject chemicals accurately and continuously. Two common options are plunger metering pumps and diaphragm metering pumps. So, which one is better? The answer depends mainly on the chemical, pressure, flow rate and safety requirements. 1. Plunger Metering Pump: Strong Pressure Performance A plunger metering pump uses the reciprocating movement of a plunger to draw in and discharge the liquid. Its main advantages include: High discharge pressure capability Accurate and stable dosing Relatively direct mechanical structure Suitable for stable and less corrosive liquids For applications where the chemical is relatively stable and the system requires higher pressure, a plunger metering pump can be a practical choice. However, its sealing structure requires particular attention when handling corrosive, toxic or hazardous chemicals. 2. Diaphragm Metering P...