All engines have built-on non-return valves and flame arresters.

所有柴油机都安装有止回阀和防火焰装置。

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Working medium inlet and exhaust non-return valves balance hole for Stirling engine is introduced.

对热气机工质进排气单向阀平衡孔作了简介。

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In pipeline systems, non-return valves are important valves, of which swing non-return valves are most widely used.

在管道输送系统中，止回阀是重要的阀门之一，其中，旋启止回阀最为常用。

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Our product line includes: Gate valves, Check valves, Globe valves, Non-Return valves, Dual-Plate Check valves, and High Performance Butterfly valves.

我们的产品线包括：闸阀，止回阀，截止阀，止回阀，双板的止回阀，高性能蝶阀。

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Fixed firefighting systems - Components for gas extinguishing systems - Part 13: requirements and test methods for check valves and non-return valves.

固定消防系统。气体灭火系统用元件。第13部分：止回阀要求和试验方法。

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Fixed firefighting systems - Components for gas extinguishing systems - Part 13: requirements and test methods for check valves and non-return valves.

固定消防系统。气体灭火系统用元件。第13部分：止回阀要求和试验方法。

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