Hard Sealed Floating Flange Ball Valve

Unlike the typical applications suited for soft-sealed ball valves, the core mission of a hard-sealed ball valve is to tackle "operating conditions that other valves cannot withstand." Under high-temperature conditions, standard soft-sealing materials are prone to aging, deformation, and failure; hard-sealed ball valves, however, employ a metal-to-metal sealing structure. Their valve cores and seats can be fabricated from high-strength alloys and subjected to specialized hardening treatments, enabling them to withstand temperatures up to 425℃. Wear resistance constitutes another major "key advantage" of hard-sealed ball valves. In industries such as metallurgy, mining, and coal chemical processing, pipelines frequently carry impurities such as solid particles and dust; in such environments, the sealing surfaces of soft-sealed valves are susceptible to abrasion, leading to seal failure. In contrast, the sealing surfaces of hard-sealed ball valves can be constructed from wear-resistant alloys and treated using specialized processes—such as plasma spraying and hardfacing—to achieve exceptional hardness. This allows them to effectively withstand the erosion and abrasion caused by particulate-laden media, thereby significantly extending their service life.

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Zhongchi Valve Group Co., Ltd. was established in April 2008. The company is a valve manufacturing enterprise that integrates design, development, production, and sales. It is located in the Binhai Industrial Park of Wenzhou Economic and Technological Development Zone.
The company adheres to the corporate tenet of "quality-oriented, innovation-driven, management-efficient, and service-focused", and upholds the business philosophy of "service-oriented and integrity-abiding". We provide customers with reliable quality assurance through advanced technology and scientific management, offers services with a complete range of products and a short delivery time, and strives to achieve the corporate goal of "building an excellent enterprise and creating a brand in the industry". The company has successively obtained ISO9001 international quality management system certification, ISO14001 environmental management system certification, ISO45001 occupational health and safety management system certification, special equipment manufacturing production license TS certification, CE certification, EAC certification, API607 fire protection certification, and has been recognized as a small and medium-sized technology enterprise in Zhejiang Province and a national high-tech enterprise.
The company's main products include ball valves, gate valves, globe valves, check valves, filters, butterfly valves, etc. These products are widely used in various industries such as petroleum, chemical, natural gas, light industry, electric power, pharmaceuticals, dyes, metallurgy, fiber, leather making, textile, food, military, construction engineering, refrigeration, water supply, and more.