Lockshields are designed for installation adjustment (balancing) of the calculated coolant flow through the heaters of water heating systems. Another important function is to turn off the heater. Lockshields can also be used on pipelines of drinking and domestic drinking systems, hot water supply, as well as on process pipelines transporting liquids that are not aggressive to valve materials. The presence of a half-grip allows you to mount and dismantle the Lockshield without dismantling the pipeline. The brass plug protects the valve from unauthorized intervention in the mounting setting.