Diaphragm Pumps
Leading Diaphragm pump manufacturer since 1958
Medium Pressure Diaphragm Pumps
Medium-Pressure Diaphragm Pumps are built to strike the perfect balance between power and precision for more demanding spray applications. With a three-cylinder design that ensures smooth, pulse-free operation without the need for dampeners, these pumps deliver consistent performance and extended service life. Offering flow rates up to 21 GPM and pressures up to 435 PSI, they’re ideal for orchard, vineyard, and row crop spraying where higher pressure and chemical compatibility are essential.
| Thumbnail | Model | Max GPM | Max L/Min | Max PSI | Max Bar | Max RPM | HP | Weight |
|---|---|---|---|---|---|---|---|---|
 | AR503-AP-C/SP+PC-SGC | 14.3 | 54.1 | 580 | 40 | 550 | 5.6 | 28 lbs |
| AR503-GR1-GCI/A1 | 14.3 | 54.1 | 580 | 40 | 550 | 5.6 | 42 lbs |
| AR503-GR3/4-GCI/A1 | 14.3 | 54.1 | 580 | 40 | 550 | 5.6 | 42 lbs |
 | AR50D-GR1-GCI | 14.8 | 65.8 | 580 | 40 | 550 | 5.2 | 48 lbs |
| AR50D-SP | 14.8 | 65.8 | 580 | 40 | 550 | 5.2 | 39.3 lbs |
 | AR30D-GR3/4-GCI | 9.6 | 36.2 | 580 | 40 | 550 | 2.9 | 32 lbs |
| AR30D-SP | 9.6 | 36.2 | 580 | 40 | 550 | 2.9 | 22 lbs |
 | AR252D-GR-GCI3/4 | 6.5 | 24.6 | 362 | 25 | 650 | 1.42 | 14 lbs |
| AR252-GR-GCI5/8 | 6.5 | 24.6 | 362 | 25 | 650 | 1.42 | 8.8 lbs |
 | AR-DUE-V.R.I.-24 | 3.5 | 13 | 145 | 10 | 1450 | 0.34 | 23 lbs |
| AR50-GR3/4-GCI | 14.8 | 65.8 | 580 | 40 | 550 | 5.2 | 48 lbs |
| AR40-GR3/4-GCI | 12.2 | 46.3 | 580 | 40 | 550 | 3.5 | 32 lbs |
| AR40-SP/A3/4 | 12.2 | 46.3 | 580 | 40 | 550 | 3.5 | 22 lbs |
| AR40-SP | 12.2 | 46.3 | 580 | 40 | 550 | 3.5 | 22 lbs |
 | AR252-SP/A5/8 | 6.5 | 24.6 | 362 | 25 | 650 | 1.42 | 8.8 lbs |
| AR503-GR1-GCI | 14.3 | 54.1 | 580 | 40 | 550 | 5.6 | 40 lbs |
| AR503-GR3/4-GCI | 14.3 | 54.1 | 580 | 40 | 550 | 5.6 | 40 lbs |
 | AR403-GR3/4-GCI | 10.7 | 40.7 | 580 | 40 | 550 | 3.7 | 34 lbs |
| AR303-GR3/4-GCI | 9.2 | 34.7 | 580 | 40 | 550 | 3.1 | 34 lbs |
| AR50-GR1-GCI | 14.8 | 65.8 | 580 | 40 | 550 | 5.2 | 48 lbs |
| AR50-SP/A1 | 14.8 | 65.8 | 580 | 40 | 550 | 5.2 | 37 lbs |
| AR30-GR3/4-GCI | 9.6 | 36.2 | 580 | 40 | 550 | 2.9 | 32 lbs |
| AR30-SP/A3/4 | 9.6 | 36.2 | 580 | 40 | 550 | 2.9 | 22 lbs |
| AR252-GR-GCI3/4 | 6.5 | 24.6 | 362 | 25 | 1.42 | lbs | |
| AR252-GR/GCI5/8 | 6.5 | 24.6 | 362 | 25 | 650 | 1.42 | lbs |
| AR252-GR/A5/8-GCI | 6.5 | 24.6 | 362 | 25 | 650 | 1.42 | 14 lbs |
 | AR1912-KIT | 6.6 | 25 | 360 | 25 | lbs | ||
| AR DUE V.R.I. 12 | 3.5 | 13 | 145 | 10 | 1450 | 0.34 | lbs |
| AR503-CRGI | 14.3 | 54.1 | 580 | 40 | 5.6 | lbs | |
| AR503AP-C/SP | 14.3 | 54.1 | 580 | 40 | 5.6 | lbs | |
| AR503-SP | 14.3 | 54.1 | 580 | 40 | 550 | 5.6 | 28 lbs |
| AR403-CRGI | 10.7 | 40.7 | 580 | 40 | 3.7 | lbs | |
| AR403AP-C/SP | 10.7 | 40.7 | 580 | 40 | 3.7 | lbs | |
| AR403-SP | 10.7 | 40.7 | 580 | 40 | 550 | 3.7 | 23 lbs |
| AR303-SP | 9.2 | 34.7 | 580 | 40 | 550 | 3.1 | 23 lbs |
| AR50AP-C/SP | 17.4 | 65.8 | 580 | 40 | 5.2 | lbs | |
| AR50-SP | 14.8 | 65.8 | 580 | 40 | 550 | 5.2 | 39.3 lbs |
| AR30-SP | 9.6 | 36.2 | 580 | 40 | 550 | 2.9 | 22 lbs |
| AR252-SP/SGC | 6.5 | 24.6 | 362 | 25 | 650 | 1.42 | 8.8 lbs |
| AR252-GR/A5/8 | 6.5 | 24.6 | 362 | 25 | 1.42 | lbs |
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