Design and features Close-coupled construction. Casing and cover in stainless steel investment  casting. Tri-lobe rotors. Health-safe design of the attachment of the rotors. DIN connections ( standard) . Sanitary mechanical seals. Easy cleaning and maintenance. Materials Parts in contact with pumped media    : AISI 316L Other parts      : AISI 304 Support    : GG-15 Gaskets ( standard)         : EPDM ( FDA)   Mechanical seals ( standard)     : C/ SiC/ EPDM Internal surface finish          : Ra < 0.8 µ m External surface finish    : polished I Technical specifications Max. flow : 41 m³ / h 180 GPM Max. pressure : 12 bar 174 PSI Max. working temperature : 120 º C 248º F Max. speed : 950 rpm Max. differential pressure TLS 1-25, 2-40, 3-50 : 12 bar 174 PSI TLS 1-40, 2-50, 3-80 : 7 bar 102 PSI