名称：Maintenance-free, high-efficiency, adjustable-speed drinking water circulation pump, without shaft seal

介绍（Introduce）：

Maintenance-free, high-efficiency, adjustable-speed drinking water circulation pump in sealless version with threaded connection, motor and stepless differential pressure control for drinking water supply systems and hot water supply systems

主要应用（Main applications）：

Drinking water circulation system in accordance with DVGW-W551

技术数据（Technical Data）：

优势（Advantages）：

1. High-efficiency technology combined with speed control and efficient operation through dynamic control for maximum operating cost savings

2. Easy operation via operating keys combined with integrated display and icons for indicating operating status

3. High availability through manual intervention options and integrated protection functions

4. Easy installation due to compact dimensions and connection plug