止回閥是平時比較常見的閥門之一，結構簡單，組裝和拆卸都不復雜，可以自己動手。止回閥在拆開之前，應保證管道和閥門內部無壓力，或將介質置換成惰性氣體，一是為了安，二是為了便于拆卸。想要更好的拆卸先可以了解怎么安裝，了解其結構，這樣在動手的時候心里比較有底。
The check valve is one of the most common valves. It has a simple structure and is easy to assemble and disassemble. You can do it yourself. Before disassembling the check valve, ensure that there is no pressure inside the pipe and valve, or replace the medium with inert gas for safety and disassembly. If you want a better disassembly, you can first understand how to install and understand its structure, so that you can have a good idea when you start.
1.先將主閥前后端的閥門關閉上。
1. First close the front and rear valves of the main valve.
2.將主閥蓋上的配管接頭螺絲松開，一定要釋放完閥中的壓力。
2. Loosen the screw of the pipe fitting on the main valve cover to release the pressure in the valve.
3.將所有螺絲取下，包括控制管路中的必要銅管的螺帽。
3. Remove all screws, including the nuts of necessary copper pipes in the control pipeline.
4.取閥蓋和彈簧。
4. Take off the valve cover and spring.

5.將軸芯、膜片、活塞等取下，切勿損傷膜片。
5. Remove the shaft core, diaphragm, piston, etc. without damaging the diaphragm.
6.將以上各項東西取出后，檢查膜片及○型圈是否損壞;如無損壞請勿再分自行爭其內部零件。
6. After taking out the above items, check whether the diaphragm and O-ring are damaged; If there is no damage, please do not compete for the internal parts.
7.如發現膜片或○型圈有損壞，請將軸芯上的螺帽松脫，逐浙分解出膜片或型圈，取出后重新換上新的膜片或○型圈。
7. If the diaphragm or O-ring is damaged, loosen the nut on the shaft core, disassemble the diaphragm or O-ring one by one, and replace it with a new one after taking it out.
8.詳細檢視主閥內部閥座、軸芯等是否有損壞，其中要是有雜物一定要清理的干干凈凈。
8. Check whether the valve seat, shaft core, etc. inside the main valve are damaged in detail. If there are sundries, they must be cleaned up.
9.依反向是順序將更換后的零部件組合裝好主閥，注意電站閥門不能有卡阻現象。
9. Assemble the replaced parts and components into the main valve in reverse order, and note that the power station valve shall not be jammed.
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The above is a detailed introduction to Shanghai Lianggong Valve, and we hope it will be helpful to you. If you have any questions, please contact us. We will provide you with our attitude http://m.kasidc.com