- Niagara Falls, New York, United States
- Jun 5th
The Delavan PowerFLO 5850-201E is an electric 12 VDC diaphragm pump that comes with a pressure demand switch which only operates when liquid flow is required. The job of the pressure demand switch is to basically eliminate the need for a pressure regulator. It will automatically turn the pump on as soon as line pressure drops, and when the line pressure increases, the demand switch automatically turns the pump off.