Dickow Pump Company, Inc. NHX Hot Water Circulation Centrifugal Pump

Dickow NHX hot water circulation pumps have been developed for medium and large size heating plants, for calendars, presses, large buildings and similar applications which require temperatures > 140 °C (284 °F). The patented cooling and degassing system ensures cooler temperatures and a stable fluid film at the seal faces allowing for more reliable operations. The NHX does not require any external water cooling. The sleeve bearing behind the impeller reduces the radial loading seen on more Dickow NHX hot water circulation pumps have been developed for medium and large size heating plants, for calendars, presses, large buildings and similar applications which require temperatures > 140 °C (284 °F). The patented cooling and degassing system ensures cooler temperatures and a stable fluid film at the seal faces allowing for more reliable operations. The NHX does not require any external water cooling. The sleeve bearing behind the impeller reduces the radial loading seen on the pump shaft. NHX pumps can be offered for temperatures up to 220 °C (428 °F) and operating pressures of 40 bar (580 psi). Maximum capacity is 1,400 m 3 /hr (6,160 gpm) and a max differential head of 220 m (722 ft) is possible.