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Installation, maintenance and troubleshooting of sanitary quick-installed diaphragm valve

by:Mayer     2021-08-20
Installation and maintenance of sanitary quick-install diaphragm valve and troubleshooting installation and maintenance 1. Before installation, carefully check whether the operating conditions of the pipeline are consistent with the scope of application specified by this valve, and clean the inner cavity to prevent dirt from jamming or damaging the sealing parts. 2. Do not apply grease or oil on the surface of the rubber-lined laminated rubber diaphragm to prevent the rubber from swelling and affecting the service life of the valve. 3. Do not tie clues to the handwheel or valve stem to lift the valve during installation. 4. When manually operating the valve, do not use auxiliary levers to prevent excessive torque from damaging the drive components or sealing parts. 5. Valves should be stored in a dry and ventilated room. Stacking is strictly prohibited. The passages at both ends of the inventory valve must be sealed, and the opening and closing parts should be in a slightly open state. Faults and elimination of possible causes of faults. Elimination methods. Handwheel operation is not flexible. Deflection of the valve stem 2. Thread damage 1 Replace the valve stem 2. The valve cannot be opened and closed automatically when the thread is trimmed and lubricated pneumatically. Air source pressure is too low 2. The spring preload is too large 3. The rubber diaphragm is damaged. Increase the air supply pressure 2. Reduce spring pre-tightening force 3. Replace the leakage at the connection between the diaphragm valve body and the bonnet 1. Loose connection bolts 2. The lining of the valve body is broken. Tighten the connecting bolts 2. Replace the valve body
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