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When industrial equipment is upgraded, most attention is directed toward automation systems, control software, or main pipeline modifications. However, beneath these visible improvements lies a category of components that rarely make the headlines but are vital to real-world performance: custom valve parts.

In industries like pharmaceuticals, food processing, and high-temperature metallurgy, on-site engineers know that valve failures rarely start with the body. It’s the small parts that give way first—bent stems, leaking packing glands, or worn-out seats. These aren’t theoretical risks; they cause real shutdowns, batch failures, and production delays.

In petrochemical, chemical, power generation, and water treatment facilities, valve systems play a critical role in fluid transport and safety control. In actual plant maintenance, the most common causes of downtime or performance decline are often not the valve body itself, but the internal valve components—stems, seats, balls, packing glands, and other key accessories.

In metallurgical plants, valve failure isn’t always about the main valve body. Often, it’s the internal parts—the seat, the stem, the gland—that give way under extreme temperature, corrosion, or pressure cycling.

In the chemical industry, where pipelines handle acids, alkalis, solvents, and high-pressure steam, equipment failure isn’t just a maintenance issue—it’s a production risk. Among all mechanical elements, valves are one of the most relied-upon...

Support ring such parts, in the whole seal structure belongs to the ‘hidden’ key parts. Many users do not pay much attention to it, but in fact, once the design or processing is not in place, the compression force distribution of the valve seat seal, PTFE ring will have a great impact, especially in the high-pressure or temperature fluctuations in the environment more obvious.

In the structure of ball valves and gate valves, the stuffing box as the core component of the stem sealing system, although static structure, but directly undertake the key task of preventing media leakage.

The lower shaft of a fixed ball valve is often an easily overlooked but costly part to get wrong. Whether the ball core rotates smoothly and whether the axis is shifted or not, it often depends on whether the size and centre datum of this lower shaft have been controlled in the machining and assembly stages.

In the current industrial system for safety and long-term operational stability requirements continue to improve the background, the valve body as the core pressure components, its design rationality and manufacturing process control directly affect the performance of the machine.