This auxiliary installation provides greatest maintenance serviceability and better regulation for installations where extreme low demand periods are frequent. The smaller size regulator effectively serves low volume demands.

• 这种辅助性安装能够提供最好的维护维修性,以及更好的调节功能,更适合经常出现超低需求的安装位置。较小的调节阀有效地用于低流量需求。