Installation, maintenance and troubleshooting of t

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Installation, maintenance and troubleshooting of diaphragm valve

installation and maintenance 1 Before installation, carefully check whether the operating conditions of the pipeline are consistent with the applicable scope of the valve, and clean the inner cavity to prevent dirt from blocking or damaging the sealing parts. 2. the surface of rubber lined laminated rubber diaphragm shall not be painted with grease to prevent rubber swelling and affect the service life of the valve. 3. during installation, do not tie the thread to the hand wheel or valve rod to lift the valve. LANXESS high performance materials business department (hereinafter referred to as "HPM") is a leading supplier of high-tech plastics. 4 When manually operating the valve, the auxiliary lever shall not be used to prevent damage due to excessive torque, which requires high requirements for the fixture of the testing machine. The driving parts are not only connected with the market or sealed. 5. the valves shall be stored in a dry and ventilated room. It is strictly prohibited to stack them. The channels at both ends of the inventory valves must be sealed, and the hoist parts should be in a slightly open state

faults and elimination of possible fault causes elimination methods handwheel operation is not flexible 1 Valve rod warped 2 Thread damage 1 replace the valve rod with stable performance 2 The valve can not be opened and closed automatically when the thread is trimmed and the lubricating oil is added The air supply pressure is too low 2 Excessive spring preload 3 Rubber diaphragm damaged 1 Increase the air supply pressure 2 Reduce spring preload 3 Replace the leakage 1 at the connection between the diaphragm valve body and the valve cover Loose connecting bolts 2 The valve body rubber lining is broken 1 Tighten the connecting bolts 2 Replace the valve body

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