1. Inspection and maintenance of the solenoid valve and muffler of Butterfly Valve With Metal To Metal, check and maintain the solenoid valve every 6 months, mainly check whether the solenoid valve is blocked by dirt, whether the spool moves freely, and whether the muffler is blocked. The dirt is clogged and unobstructed. Whether the air source is clean and free of moisture.
2. Cylinder inspection and maintenance plan. Clean the surface of the cylinder at ordinary times, and add oil at the collar of the cylinder shaft. Open the cylinder end cover regularly every 6 months to check whether there is debris, moisture, and grease in the cylinder. If grease is missing or dry, the cylinder should be removed for full maintenance and cleaning before adding grease.
3. Valve body inspection: every 6 months, check whether the appearance of the valve body is good and whether the mounting flange is leaking. If it is convenient, check whether the valve body is well sealed, without wear, whether the valve plate is flexible, and whether the valve is stuck by foreign objects.
4. Cylinder block disassembly method and precautions: First, remove the cylinder from the valve body. First, remove the caps on both ends of the cylinder. When removing the piston, be sure to pay attention to the direction of the piston rack, then turn the cylinder shaft clockwise with external force to make the piston run to the outermost side, then slowly ventilate the valve closing hole, and use air pressure to gently eject the piston, but this The method must be careful to ventilate slowly, otherwise, the piston will pop out suddenly, which is a little dangerous! Then remove the retaining ring on the cylinder shaft, and the cylinder shaft can be taken out from the other end. Then, each component can be cleaned and lubricated. The parts that need to be lubricated are cylinder inner wall and piston seals, racks and retaining rings, and gear shafts and seals. After adding grease, install in the reverse order of disassembly and parts. After installation, installation should be performed in the reverse order of removal and parts. Note the position of the rack and pinion. It must be ensured that when the valve is open, i.e. when the piston is retracted to the innermost position, the upper-end groove of the gear shaft is parallel to the cylinder block. When the valve is closed, i.e. when the piston is extended to the outermost position, the upper-end slot of the gear shaft is perpendicular to the cylinder.
