It shall be a complete assembly including tight-closing resilient seated shutoff valves, test cocks, and a strainer is recommended.

这种总成应该是完整的，包括紧密关闭弹性阀座关闭阀(闸阀)，测试旋塞，以及建议配置的一个过滤器。

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At present, the development and production of the main products are butterfly valve, check valve, gate valve, ball valve, strainer valve, globe valve, slurry valve, diaphragm valves and so on.

目前，开发生产的主要产品有蝶阀、球阀、止回阀、闸阀、截止阀、浆料阀、隔膜阀等。

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