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INSTALLATION, OPERATION, MAINTENANCE MANUAL

Revision: 9210 Butterfly Valve70-16-43-06-ENINSTALLATION, OPERATION, MAINTENANCE MANUAL Contents 1. General .. 1 Introduction to valves .. 1 Valve Structure .. 2 2. Storage .. 2 3. Installation .. 3 4. Operation .. 8 Inspections before Operation .. 8 5. MAINTENANCE and Repair .. 9 General .. 10 Disassembly and Assembly of Valve Body and Actuator .. 10 Disassembly .. 10 Valve Assembly .. 11 Disassembly and Assembly of Actuator .. 11 Disassembly and Assembly of Body .. 12 Disassembly (See Fig ) .. 12 Assembly .. 12 6. Preventive MAINTENANCE and Troubleshooting .. 15 Troubleshooting .. 15 7. Others .. 17 Procedure for Switching Action (Reverse Action Direct Action) .. 17 - 1 - 1. General Introduction to valves The butterfly valve has been designed for the requirements and applications of piping. As flow rate is effectively controlled, it has less cavitation, noise, corrosion, or vibration relatively.

valve entrance must be at least 10 to 20 times the pipe diameter. For the fluid to maintain the specified pressure after passing the valve and to prevent noise or vibration by …

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