Diaphragm Pumps
The standard AODD pump's double discharge head - a reliable solution for long lines with a 160 m transfer distance and 8.4 bar pressure.
About the High Pressure Series
High pressure diaphragm pumps are a specially designed series that doubles the discharge head of a standard AODD pump from 80 m to 160 m. Manufactured with aluminum, cast iron, and AISI 316L stainless steel body options, these models are designed to overcome the challenges of long pipe lines, transfers to high buildings, and filter press feeding circuits in the chemical, petrochemical, paint-coating, wastewater, and mining sectors. Four sizes ranging from the PP 100 model with 1'' connection to the PP 300 model with 2.5'' diameter meet different flow rates and process requirements.
In a standard AODD pump, the liquid pressure obtained with 6-7 bar air pressure is limited to 6-7 bar and the discharge head to 80 m. The high pressure series, on the other hand, exceeds this value with a pressure boosting mechanism in the pump's internal design; at 8.4 bar operating pressure it can reach a discharge head of 160 m. Although this difference may seem insignificant for applications requiring only 20-30 meters of height, it is a determining selection criterion in transfers to building roofs, silo tops or storage tanks on hills, and in horizontal pipe lines exceeding 500 meters.
Wide operating temperature range between -18°C and +100°C and resistance to dry operation make these pumps reliable under demanding process conditions. In filter press feed applications, the cyclic variability of process pressure necessitates compatible operation with the pressure adaptation of diaphragm pumps; centrifugal pumps in this scenario either experience cavitation or cannot provide constant flow rate. High-pressure diaphragm pumps therefore rank among the essential equipment of the filter press cycle.
Technical Specifications
This series, which doubles the 80 m discharge height of a standard AODD pump, compensates for pressure losses at the end of the line in roof tank transfers of high-rise buildings, top storage silo feeding, and long horizontal piping lines.
As the system resistance increases in the filter press cycle, the pump flow rate automatically decreases while the pressure remains constant. This natural pressure-flow characteristic of diaphragm pumps provides a decisive advantage over centrifugal pumps in filter press circuits; the risk of excessive pressure and filter cake damage is eliminated.
It provides sufficient end-point pressure in 500+ meter pipe lines within chemical plants, in mining field surface-underground transfers, and in inter-floor chemical distribution lines in buildings. It eliminates the need for additional booster pumps and reduces facility costs.
Thanks to its -18°C operating capacity, it works safely in outdoor installations in cold climate conditions and in cooled chemical storage transfers. The metal body maintains its structural integrity at low temperatures.
Non-electric AODD principle and ATEX certified configuration provide safe installation in Zone 1–2 and Zone 21–22 explosive atmospheres of petrochemical and solvent paint facilities. Conductive metal housing prevents static electricity accumulation.
In long-distance line transfers, resistance to dry running in case of level drop or pump emptying prevents body and diaphragm damage. When the line is refilled, the pump comes into operation smoothly; no additional startup procedure is required.
Model Comparison
| Model | Connection | Maximum. Debut | Maximum Pressure | Height of Basma | Body |
|---|---|---|---|---|---|
| PP 100 | 1'' | 80 lpm | 8,4 bar | 160 m | AL / DD / SS |
| PP 150 | 1.5'' | 200 lpm | 8,4 bar | 160 m | AL / DD / SS |
| PP 200 | 2'' | 280 lpm | 8,4 bar | 160 m | AL / DD / SS |
| PP 300 | 2.5'' | 440 lpm | 8,4 bar | 160 m | AL / DD / SS |
Product Series
Frequently Asked Questions
