Underground ball valves are usually provided in fully welded body execution with butt welding ends. For this application valves are provided with an extended stem; drain, vent and emergency sealant lines are fitted at the top of the extension.
Underground ball valves are usually provided in fully welded body execution with butt welding ends. For this application valves are provided with an extended stem; drain, vent and emergency sealant lines are fitted at the top of the extension.