The internal cylinder of the pneumatic butterfly valve mainly provides gas power for the operation of the valve. This is very important, so no matter whether it is disassembly or assembly, you need to be very careful. Follow the instructions to disassemble and install the pneumatic butterfly valve. The first thing to do is to remove the cylinder from the valve. Disassembled on the body.
1. First, remove the cover of the pneumatic butterfly valve from the cover of the two ports of the cylinder, and pay special attention to the direction of the gear bar when disassembling the piston;
2. Then, rotate to the cylinder shaft in a clockwise direction hard to make the piston move to the outer layer quickly. First, close the hole of the pneumatic butterfly valve, and then use higher pressure to eject all the internal pistons. In this method, you must pay attention to slowly ventilating the pneumatic butterfly valve, otherwise the piston will suddenly eject. This situation is very dangerous. May cause harm to the operator;
3. After the change, clamp the spring on the cylinder shaft to completely loosen it, and then take out the cylinder shaft from the other end of the valve.
After the above preparations are done, all the parts in the pneumatic butterfly valve can be cleaned up, and the parts need to be lubricated. The main components for lubrication and water injection are: cylinder cavity wall, piston sealing ring, gear bar and rear ring plate. The drive shaft and the sealing ring also need to add a certain amount of lubricating oil.
