Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 206 . 0 M A I N T E N A N C E Valves should be periodically checked. Frequently depends on service, critically and frequently of use. Various design configurations are produced within the 2014 and 2016 range. Most are single piece body. Valves with liners like solid PTFE use a 2 piece bolted body. The following periodic preventative maintenance practises are recommended for all Superseal butterfly valves. 1. Operate the valve from full open to full closed to assure operability. 2. Check flange bolting for evidence of loosening and correct as needed. 3. Inspect the valve and surrounding area for previous or existing leakage at flange faces or shaft connections. 4. Check piping and/or wiring to actuators and related equipment for looseness and correct as needed. Australian Pipeline Valve - Installation, Operation and Maintenance Manual 11 LINED BUTTERFLY VALVES - MODEL 2014 & 2016 SERIES Personal injury may result from sudden release of any process pressure. APV recommends the use of protective clothing, gloves and eye wear when performing any installation or maintenance. Isolate the valve from the system and relieve pressure prior to performing maintenance. Disconnect any operating lines providing air pressure, control signals or electrical power to actuators.