Laing LMB15107976 D5-38/710B Vario DC Circulator Pump with 1/2-Inch FPT Connections, Bronze

Basic: Standard The Basic model is a pump that will run on one simple pump curve. No matter what the input voltage is. Strong: Extra Power When the Basic model does not have the performance you want, the Strong model will have the extra performance you need. Same simple pump design, but with extra performance when the input voltage is at the max 24VDC. Vario: The Right control The Vario model has a knob to give you control of the speed of the pump allowing you to adjust the performance to your application. GPM given is max.