| Material: | Cast Iron |
|---|---|
| Application: | Heating |
| Type: | Pump Part |
| Used With: | 005 Series 006 Series |

The 019 is designed for closed loop systems and has a polypropelyne impeller. The 020 is designed for Bronze and stainless steel pumps in open systems, and has a norel impeller.
That pump requires the 005-020RP replacement cartridge.
It will not. You need part number 005-020RP ( http://www.pexsupply.com/Taco-005-020RP-Taco-Pump-Replacement-Cartridge-TAC005-020RP-for-005-Bronze-006-Bronze-4115000-p ).
No, it will not fit your pump. You need SKU: 005-020RP.