The Grundfos standard range is designed to meet the conditions of most industrial applications. However, certain liquids or other technical circumstances may necessitate special pump designs or customization. For instance: Pumping of high-viscosity or sticky liquids NPSH level causes cavitation or vortexing Legal aspects prohibit vertical pump mounting - for instance, on ships or in areas subject to earthquake Application requires pumps without carbon or silicone materials

VARIANT DESCRIPTION AVAILABLE FOR MODELS Horizontally mounted pump For safety reasons, certain applications - for instance, on ships - require the pump be mounted in the horizontal position. The pump is equipped with brackets that support the motor as well as the pump part for easy installation. CR(I)(N)1/3/5/10/15/20 CR(N)32/45/64/90 Low temperature pump down to - 40 °F/-40 °C In chiller pumps, which may be exposed to temperatures down to -40 °F/-40 °C, it is necessary to alter neck ring dimensions in order to prevent impeller drag.* CRI, CRN 1/3/5/10/15/20 Carbon-fiber-free pump Certain processes - such as those experienced in the electronics industry - require the use of pumps containing absolutely no carbon fibers. Such 100%carbon-fiber-free pumps are available.* CR(N)32/45/64/90 >CR(I)(N) 1/3/5/10/15/20 are carbon free as standard if non-carbon shaft seal is chosen Customer ’s nameplate Nameplate with relevant pump data supplied by the customer replaces the usual Grundfos nameplate on the pump.* CR(I)(N) 1/3/5/10/15/20 CR(N) 32/45/64/90 Custom-colored pumps Pumps are available in special colors by means of a water-based top coat. Contact Grundfos for information on the colors available.* CR(I)(N) 1/3/5/10/15/20 CR(N) 32/45/64/90 Low-NPSH pump (improved suction) Recommended for boiler-feed applications where cavitation may occur due to poor inlet pressure.* CR(I)(N) 3/5/10/15/20 EU models Incorporating IEC motor and DIN/metric base.* CR(I)(N) 1/3/5/10/15/20 CR(N) 32/45/64/90 Pump with bearing flange Recommended for standard motors. The bearing flange increases the life span of motor bearings.The bearing flange can also be used for applications where the inlet pressure is higher than the maximum recommended.* CR(I)(N) 1/3/5/10/15/20 CR(N) 32/45/64/90 CRT 2/4/8/16 Silicone-free pump For processes that require the use of pumps not containing silicone, 100% silicone-free pumps are available.* CR(I)(N) 1/3/5/10/15/20 CR(N) 32/45/64/90 Combination bearing of titanium/PTFE-filled carbon and PTFE gaskets Recommended for applications involving the pumping of very aggressive liquids.* CR(I)(N) 1/3/5/10/15/20 CR(N) 32/45/64/90

*Additional delivery time may be required.