Valve knowledge

A practical guide to using butterfly valves in wastewater treatment systems, including application areas, material selection, sealing, installation, and maintenance.

A practical guide to selecting butterfly valves for municipal water supply systems, including valve type, materials, pressure ratings, installation points, and maintenance considerations.

Butterfly valve leakage is one of the most common problems in piping systems. In actual engineering applications, leakage is not always caused by valve quality itself. In many cases, it is related to valve selection, installation methods, operating conditions, and long-term maintenance. In general, butterfly valve leakage can be divided into two main types: Internal

In piping systems, knife gate valves and wedge gate valves often look very similar, so many people assume they can be used interchangeably. In reality, however, these two types of valves are designed for very different applications and operating conditions. In media containing particles or impurities — such as wastewater, slurry, or paper pulp —

Butterfly valves seal performance is a critical factor in real-world applications, even though it is not always the first parameter considered during selection. Many common site issues—such as incomplete shut-off, ongoing minor leakage, or a gradual decline in sealing performance over time—are closely related to how butterfly valves seal and the design of their sealing

In real project procurement, many buyers face the same issue: butterfly valves with the same specifications can vary significantly in price between suppliers—sometimes by several times. This difference is not simply due to brand or market factors. It is mainly driven by variations in materials, design, manufacturing processes, and configuration requirements. Understanding these key factors

Water hammer is a common issue in cooling water and chilled water systems, especially in HVAC applications and data centers. If not properly controlled, it can lead to pipe vibration, noise, and even damage to valves and pumps. Understanding what causes water hammer—and how to prevent it—is essential to keeping the system stable and operating

In data center cooling systems, the circulation of cooling water must remain stable over long periods of operation. Any backflow or water hammer can not only reduce system efficiency but also damage pumps and piping. For this reason, check valves are not just basic components—they play a critical role in ensuring safe and reliable system

In cooling tower systems, water continuously circulates to carry heat away from equipment and release it into the air. While the process may seem straightforward, improper flow control or backflow can reduce cooling efficiency and even cause operational stress on pumps and the overall system. In real-world projects, system stability often depends on how well

In valve selection, pressure rating is one of the most critical parameters. PN10, PN16, and Class 150 are the three most commonly used pressure ratings in engineering, yet in practice, their meanings and differences are not always fully understood. A clear understanding of these pressure ratings and how they differ is essential to ensure proper