The fluid pushes through the center of the pump rather than the outside. An improved diaphragm and ball seat design provides a faster and stronger suction lift. Ideal for standard applications. Wide range of sizes available. Improved ball valve guides design. In-line servicing is easy, quick, and cost-saving. Reach higher flow rates up to 66 gallons/minute. DF30 Series: Against 3/8" pumps, has 28% more flow, is 32% smaller, and has 1/2" fluid and 3/8" air connections. DF50 Series: Against 1/2" pumps, it has equivalent flow, is 70% smaller, and has 1/2" fluid and 3/8" air connections. DF100 series: Against 3/4" pumps, has 24% more flow, is 58% smaller, and has 1" fluid and 3/8" air connections
- Extremely reliable, long service intervals
- Easy, fast service & maintenance
- Increased pump performance
- Reduced pulsations
- Reduced air consumption
- Reduced noise level
- Compact design