SAWA lye pumps made of V4A stainless steel 1.4435 have been successfully used for many years to pump lye in a wide range of industrial sectors. The lye pumps operate very energy-efficiently and are available as compact block pumps with stub shaft and IEC standard motor or also in the design with magnetic coupling. The screwed and very thick-walled housing constructions promise a very high degree of process reliability and are particularly suitable for heavy-duty applications but also for fine chemicals. Depending on the design, these pumps also comply with the ATEX directive 2014/34/EU and are approved for ATEX zones 1/21 and 2/22.