阀门类Valves
旋塞阀、闸阀、截止阀、球阀—用于开启或关闭管道的介质流动。 止回阀（包括底阀）—用于自动防止管道内的介质倒流。 节流阀—用于调节管道介质的流量。
蝶阀—用于开启或关闭管道内的介质。也可作调节用。
安全阀—用于锅炉、容器设备及管道上，当介质压力趔过规定数值时，能自动排除 过剩介质压力，保证生产运行安全。
减压阀—用于自动降低管道及设备内介质压力。系使介质经过阀瓣的间隙时，产生阻力造成压力损失，达到减压目的。
疏水器—用于蒸汽管道上自动排除冷凝水，防止蒸汽损失或泄漏。
Cock valves, gate valves, globe valves, ball valves - Medium flow for opening or closing pipes. Check valves (including bottom valves) - used to automatically prevent medium backflow in pipes. Throttle Valve - used to regulate the flow of pipe media.
Butterfly Valve - Medium used to open or close pipes. It can also be used as a regulator.
Safety Valve - Used in boilers, container equipment and pipes. When the medium pressure exceeds the prescribed value, it can automatically eliminate excess medium pressure to ensure the safety of production and operation.
Pressure Relief Valve - Used to automatically reduce medium pressure in pipes and equipment. When the medium passes through the clearance of the valve disc, it produces resistance and causes pressure loss to achieve the purpose of decompression.
Drainage trap - Used for automatically removing condensate water from steam pipeline to prevent steam loss or leakage.