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Ball Valve
https://www.zhaoqiangseal.com/products/ball-valve/


Ball Valve
Metal ceramic ball valves use ceramic balls as the sealing and regulating element inside a rugged metal body. They combine the durability of metallic ball valves with the corrosion resistance and inertness of ceramic materials. The spherical ceramic ball has a precision-machined hole that rotates inside PTFE seats to provide tight shutoff when closed and unobstructed straight-through flow when open.

Common materials for the ceramic balls include aluminum oxide, silicon carbide, zirconia and tungsten carbide. The hardened balls provide excellent wear resistance and have a surface finish of 0.5 microns or better. Popular metals for the body are carbon steel, stainless steel, alloy steels, nickel alloys, and cobalt-based alloys - chosen to handle specific temperature, pressure and fluid conditions.
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