Reduced port Ball valves are not recommended in building services piping, but rather for process piping in hazardous material transfer.

缩径流道球阀不推荐在建筑物管道系统中使用，但是可用于有害物质传输的处理管道。

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Valves serve the purpose of controlling the fluids in building services piping. Valves are produced in a variety of design types and materials.

在建筑物管道系统中，阀门起着控制流体的作用。由于结构和材质的不同，因此制造出的阀门也就各不相同。

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It also offers specialized application services, such as building automation control systems, fire protection, process cooling, electronic monitoring, and process piping, in addition to providing electrical and plumbing services.

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