| Material: | Cast Iron |
|---|---|
| Amperage: | 1.1 |
| Application: | Heating |
| Voltage: | 115V |
| Max Pressure (PSI): | 150 |
| Type: | Pump |
| Horse Power: | 1/15 |
| Connection Size: | 3/4" 1" 1-1/4" 1-1/2" |
| Flow Range (GPM): | 0-37 |
| Max Flow (GPM): | 37 |
| Max Head (Ft): | 12 |
| Head Range (ft.): | 0-12 |
| Max Temp (F): | 225°F |
| Hertz: | 60 |
| Phase: | 1 |
| RPM: | 2950 |
| Connection Type: | Flanged x Flanged |
| Warranty: | 3 Year |

The Series 100 pump is still available, so the replacement would be sku 106189.
This pump can be used for priority zoning. It would need to be wired this way to the switching relay.
You can switch to NRF-33, but keep in mind that it is a smaller pump. You can only use it if it matches the specifications of your system. As long as the new pump is big enough, you should not lose performance or hear more noise. It may even work more efficiently if your previous pump was oversized.
No, it is not adjustable.
No, you will not. You can zone by pump or by valve, but the result will be the same.