Which Is Better, A 2pc Flanged Ball Valve Or A Stainless Steel One?

1. Fully Lined PTFE Ball Valve Structure

2PC Flanged Ball Valve, made of high-quality 46F, offer superior acid, alkali, and wear resistance compared to standard valves. PTFE-lined ball valves are available in two-piece and three-piece configurations. In addition to offering low fluid resistance, fast opening and closing speeds, and a simple structure, the FEP lining provides exceptional chemical stability and compatibility with all highly corrosive media, with the exception of molten alkali metals and elemental fluorine. The full-bore, floating ball design ensures leak-free closure across the entire pressure range, facilitating piping and maintenance. The valve stem is integrally cast (forged) with the opening and closing member, eliminating the possibility of the stem being ejected from the pressure-bearing component due to pressure fluctuations, ultimately ensuring operational safety. The compact and rational design minimizes the internal space within the valve body, minimizing media retention. Furthermore, the unique molding process results in a high-density sealing surface. Combined with the herringbone PTFE packing, the valve achieves zero leakage.

2. Fluorine-lined ball valves offer superior corrosion resistance to stainless steel ball valves.

Fluorine-lined ball valves, because they are entirely composed of 46F, offer superior corrosion resistance to stainless steel ball valves. When used with strong acids and alkalis, stainless steel ball valves often suffer corrosion and damage to the stainless steel ball core due to the aggressive media, resulting in poor sealing. Fluorine-lined ball valves, on the other hand, offer superior sealing and wear resistance compared to stainless steel. Fluorine-lined ball valves are specially designed to control the opening and closing of various highly corrosive media. They are widely used in the petroleum, chemical, dyeing, pesticide, and acid and alkali production industries, making them the ideal choice for corrosion-resistant valves.