★Feature
・A stoppage of small flow (10 L/min) from feed pump.
・Less pressure lost allows to monitor flow in the condition of low water level and/or low pressure.
・Simple structure proving easier maintenance and less malfunction.
・Cheaper price.
・For straight piping section, simply have 3D for the front and back.
・When there is no flow, switch function can be monitored manually.
・Since lead switch system is applied, higher resistance to environmental conditions.