Radel polyphenylsulfone (PPSU) polymer, a high performing unit of Solvay, has helped China-based CiXi Zhenpeng Plumbing Fittings Company to manufacture a new line of all-plastic valves suitable for pressurized hot water systems used in Heating, Ventilation, and Air Conditioning (HVAC) applications. This new product has completely eliminated the use of the traditional brass material. The industry’s first all-PPSU stop valve meets reputed standards ASME A112.18.1-2012 and CSA B125.1-12, and are tested by the International Association of Plumbing and Mechanical Officials (IAPMO).
Philippe-Jacques Leng, Global Construction Market Manager for Solvay’s Specialty Polymers Global Business Unit, said, “Because stringent global regulations discourage the use of brass in pipe fittings for drinking water and HVAC systems, leading-edge innovators like CiXi Zhenpeng have increasingly sought to leverage Solvay’s 30 years of experience in specialty polymer technology for this market. Zhenpeng’s innovative all-PPSU stop valve did not simply reduce the presence of heavy metals in the part, it eliminated them entirely to offer system integrators a safer and more durable alternative for their customers.”
Solvay’s high-performance polymer enabled a patented one-piece ball valve and valve rod design, a half-ball valve, and L-type and T-type valves. Radel PPSU enables Zhenpeng’s new products to eliminate corrosion and deliver reliable, long-lasting performance over the lifetime of today’s HVAC systems. Zhenpeng’s all-plastic valves and fittings are available for the U.S. market and will be available in Europe in the near future.
High fatigue resistance, strong chemical resistance and high impact strength, as well as the highest long-term hydrostatic strength (LTHS) are some of the special characteristics of any sulfone polymer of Solvay’s Radel PPSU that make it well-suited for fittings that can operate under high pressure (up to 10 bar) and temperatures up to 95°C (203°F) for up to 50 years as required in multilayer piping systems.