About PA Series
Metal Diaphragm Pump
Why Is It Preferred?
Metal diaphragm pumps (PA Series) are designed to withstand heavy industrial conditions with aluminum (AL), cast iron (CI), and AISI 316L stainless steel (SS) body options. The capability to operate safely at ambient temperatures dropping down to -18°C makes the PA Series indispensable for cold storage transfers, outdoor winter installations, and cold chemical processes. While polypropylene bodies become brittle at these temperatures, aluminum and steel bodies maintain their mechanical integrity completely.
The PA Series offers flow capacity ranging from 57 lpm to 894 lpm with a model range extending from 3/4" to 3". The maximum operating pressure is 7 bar in the PA 05 model and 8.4 bar in larger models (PA 10 and above). This series, which achieves a discharge head of up to 80 m, is preferred in applications where centrifugal pumps prove insufficient, such as in long pipelines or installations with high static resistance. Thanks to its mechanical shock resistance, it can be safely deployed in high-traffic areas, on vibrating platforms, and in mobile equipment.
In terms of chemical compatibility, the PA Series supports Santoprene, Neoprene, Buna-N (NBR), EPDM, FKM and PTFE diaphragm options. This flexibility addresses a broad fluid portfolio including petrochemical solvents, paints and varnishes, wastewater sludges and various industrial oils. Models with 316L stainless steel bodies demonstrate superior performance in chloride-containing environments and aggressive chemicals, while aluminum body models offer an economical choice for general industrial applications requiring a balance of cost and weight.