




| remarks | Dosatron | Dosmatic | Tefen | Item |
| Poor UV resistant | Medium UV resistant | Excellent UV resistant | Body & cover | |
| high | high | low | Number of parts | |
| Special formed plastic and Rubber "o" ring | High chemical resistant, simple form Viton rubber | Suction seal | ||
| complicated | complicated | simple | motor | |
| Non replaceable | Non replaceable | replaceable | Motor seals | |
| Needs laboratory | Needs laboratory | Simple DIY | Maintenance | |
| Extension springs | Pressure" springs with plastic guide that ware out" | Extension springs | springs | |
| Needsknowledge | Needsknowledge | Very simple and modular | disassembling | |
| Poor | Average | good | Chemical resistant for standard models | |
| Medium | Medium | High | Robust | |
| Not included | Not included | included | Spare seal kit | |
| For big models | included | Legs not included | included | Support legs& wall mounting bracket |
| Available | Not available | available | optional integral union connectors | |

