Source: https://www.alfalaval.com/globalassets/documents/products/heat-transfer/plate-heat-exchangers/gasketed-plate-and-frame-heat-exchangers/instruction-manuals/instruction-manual-alfa-laval-industrial-line-m3-m6-m10-t2-t5-t6-t8-t10-tl3-tl6-ts6-french.pdf