Valve knowledge

Municipal pipeline networks are a core component of urban water supply and drainage systems, and their safety, stability, and economic efficiency are critical to the reliable operation of a city. As key devices for controlling flow and isolation,  flange butterfly valves are widely used in municipal pipeline networks, and valve selection has a direct impact […]

During butterfly valve selection, engineers and procurement professionals often face a common question: why do some projects require compliance with API 609, while others clearly specify EN 593? From an external perspective, butterfly valves built to these two standards may look very similar in terms of overall structure. However, the design philosophy behind them and

In water supply, wastewater, and industrial water systems, valves are core components used to control fluid flow and isolate sections of the system. Their sealing performance directly affects operational safety and overall system stability. In long-term service, water valves are subjected to frequent opening and closing, pressure fluctuations, and continuous exposure to the process medium.

Butterfly valve service life is influenced by many factors, so there is no single lifespan that applies to all applications. In real operating conditions, some valves can remain in service for decades, while others may develop leakage or operational issues after only a few years. This difference is rarely caused by one factor alone, but

What Is a PTFE Seat in a Butterfly Valve? A PTFE seat in a butterfly valve is a ring-shaped sealing component installed at the valve’s sealing interface. It is made primarily of polytetrafluoroethylene (PTFE). When the disc is in the closed position, the PTFE seat forms a tight sealing surface against the outer edge of

What Is a Concentric Butterfly Valve? A concentric butterfly valve is the most classic and widely used type of soft-seated butterfly valve. The term “concentric” means that the centerline of the valve stem, the center of the disc, and the centerline of the valve body are all aligned on the same axis. During operation, the

Choosing the right butterfly valve is important, but it’s only the first step. The connection type—how the valve is actually installed into the pipeline—plays a critical role in system safety, cost, and long-term reliability. Pick the wrong connection, and the result can be leakage, mechanical failure, or costly downtime. This guide simplifies the decision-making process.

Flanged butterfly valves are widely used in water treatment plants, municipal pipelines, and industrial systems. While the valve structure itself is relatively simple, the installation process involves several important details that directly affect sealing performance, operating torque, and long-term reliability. To help ensure stable operation in your system, this guide summarizes the most common installation

Butterfly valves are widely used across water treatment, HVAC, chemical processing, and various industrial pipeline systems due to their compact design, quick operation, and cost-effective performance. At the heart of their sealing capability is the valve seat—a component whose material and condition directly determine shutoff quality and service life. Valve seats are typically made from

When budgets tighten and installation space becomes increasingly limited, engineers and procurement teams face a familiar challenge: finding a valve that delivers reliable flow control without pushing costs—or footprints—beyond what a project can accept. In many cases, the butterfly valve strikes that balance better than almost any other option. While it’s not a universal solution,