Check modules are installed in the valve body with the seats facing the valve inlet.

安装在阀门内的止回模块其阀座应该面对阀门进口。

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ATO Co. provides the leading gravity foundry equipments and craft facing the world, those equipments are applying one after another to the domain of faucet, water meter, valve and so on.

欧拓公司面向全世界提供领先的重力铸造设备与工艺，这些设备正陆续应用于水龙头、水表、阀门等领域。

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