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Why Your Water Pump Overheats? Root Causes and Effective Solutions

Feb 04,2026

Why Your Water Pump Overheats? Root Causes and Effective Solutions

This science-based guide teaches how to properly select a water pump by accurately calculating and balancing head (total resistance including static lift, friction losses, and suction) and flow rate (volume delivered per unit time)—two inversely related parameters shown on the pump's performance curve. It explains common mistakes (guesswork, ignoring dynamic head, focusing on only one parameter, or overlooking application needs), provides practical calculation steps, mitigation strategies, and emphasizes matching the operating point to the best efficiency zone to prevent inefficiency, cavitation, energy waste, and early pump failure across industrial, agricultural, commercial, and residential uses.

Wrong Head & Flow Rate? A Science-Based Guide to Water Pump Parameter Selection

Feb 04,2026

Wrong Head & Flow Rate? A Science-Based Guide to Water Pump Parameter Selection

This science-based guide explains how to correctly select a water pump by precisely matching head and flow rate—the two interdependent parameters that, if miscalculated, lead to inefficiency, equipment damage, excessive energy use, and premature failure.

Understanding the Direction and Working of AC Motors: A Clear, Detailed Guide

Jan 28,2026

Understanding the Direction and Working of AC Motors: A Clear, Detailed Guide

This article provides a beginner-friendly yet detailed explanation of how AC motors work, focusing on the creation of a rotating magnetic field (RMF) in the stator using alternating current and phased coils. It covers key components like stator, rotor, and air gap; differentiates between induction (asynchronous) motors with slip and squirrel-cage rotors, and synchronous motors that lock in step; explains direction reversal via phase swapping; and discusses speed control with VFDs, synchronous speed formula, and efficiency trends from IE1 to IE5. Ideal for understanding rotation, induction, and practical applications in everyday and industrial devices.

Centrifugal Pumps: Principles, Performance and Industrial Best Practices

Jan 26,2026

Centrifugal Pumps: Principles, Performance and Industrial Best Practices

A chemical plant in East Asia needed to transfer 30% sulfuric acid and alkaline mixtures (temperature 45℃, flow rate 20 m³/h, head 80 m). Its original cast iron pump suffered severe corrosion and seal leakage, with an average service life of only 3 months. After switching to TECHO centrifugal pumps with 316L stainless steel impeller/casing and corrosion-resistant mechanical seals, the equipment achieved stable operation for over 12 months with no abnormal leakage. This cut the plant’s pump maintenance costs by 60% and completely eliminated unplanned production downtime caused by pump failure.

Net Positive Suction Head (NPSH): A Comprehensive Guide to Prevent Cavitation in Pumps

Jan 21,2026

Net Positive Suction Head (NPSH): A Comprehensive Guide to Prevent Cavitation in Pumps

This guide demystifies Net Positive Suction Head (NPSH) — the critical parameter for preventing pump cavitation. From core physics and formula breakdowns to practical system optimization, we cover NPSHa/NPSHr calculation, key influencing factors, and actionable solutions for industrial applications. Ideal for engineers, plant managers, and pump operators, this resource also highlights TECHO’s low-NPSHr pump solutions designed for harsh industrial conditions.

How to Choose Efficient and Reliable AC Motors? Avoid These Five Common Mistakes – TECHO Expert Guide

Jan 20,2026

How to Choose Efficient and Reliable AC Motors? Avoid These Five Common Mistakes – TECHO Expert Guide

In today's industrial landscape, AC motors are essential to a wide range of applications but buyers often make costly selection mistakes by prioritizing upfront costs over key specs. TECHO, a Chinese manufacturer with 30 years of expertise in high-efficiency AC motors and water pumps, has helped 1,500+ clients across 40+ countries optimize power solutions, leveraging its state-of-the-art 35,000㎡ facility, 800,000-unit annual capacity, and ISO9001-certified rigorous testing processes to deliver ultra-efficient, durable motors.

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