2.2 VALVE INSTALLATION a- To handle the valve use body lugs if applicable or suitable eyebolts. Never handle the valve by yoke or using the lever or actuator or gear box eye bolts. Never lift from bore of valve. Do not lift the valve using only one lifting lug. b- The end protectors must be removed only immediately before installation. If one of end is not connected to the line for a period of longer than half a day the opened end shall be securely sealed with plastic or wooden cover. c- For butt weld type valves take care for the following: If brushing or grinding, seal valve conduit (bore) to prevent damage. At the end of such operation clean accurately the conduit. The welding procedure and post-weld treatment shall be performed taking into account the allowable maximum temperature for seats and seals. The welding sequence shall be pre-planned in order to give an acceptable piping load to the valve. Leave valve in full open position to reduce temperature transmission to soft seats (where applicable). For valves up to 100 NB (4”) use temperature measuring strips. Ensure temperature of body does not go above 180°C. d- At the end of installation lock the valve full open in order to avoid any movement of the gate before flushing the pipeline. e- Valves will operate at any angle horizontally or vertically, although it is recommended you install valves in a vertical position with stem pointing upwards for ease of operation, inspection and accessibility. Australian Pipeline Valve - Installation, Operation and Maintenance Manual 7 API6D THROUGH CONDUIT EXPANDING GATE VALVE - AP400-405 SERIES If the gate valve is equipped with a test connection port, make sure that it is fully closed before pressurising the valve. Local safety regulations must be complied with for transport to the place of installation. Make sure that the valves cannot tilt or slip in any way. APV expanding gate valves in liquid service must be equipped with a thermal relief system (if the thermal relief system utilises needle valves, they must be in the OPEN position prior to the valve operation). Failure to do so may result in catastrophic malfunction. In the event the expanding gate valve body cavity needs to be depressureised, please refer to 8.5, Body Bleed Procedure.