Rotech’s end suction centrifugal pumps are frame mounted pumps coupled with electric motors by flexible type of coupling. These pumps are designed for applications in medium duty service, in heating and air conditioning, booster and general circulating services. DN Series end suction centrifugal pumps are also used for city water, municipality, irrigation, HVAC, apartment building, effluent treatment, cooling tower, circulation water, chillers, petrochemicals, refineries and pharmaceutical applications amongst others. DN Series centrifugal end suction pump is available in cast iron bronze fitted and all iron Materials of Construction (MOC) with type 21 mechanical seals. All stainless steel Materials of Construction can be supplied upon request. DN Series horizontal end suction pumps are furnished with enclosed dynamically balanced impellers for smooth and low vibration operation. DN Series end suction centrifugal pump delivers variety, durability, standardized options and configurations.
1. DN Series Pumps are available in cast iron bronze fitted and all iron Materials of Construction with type 21 mechanical seals. All stainless steel MOC can be supplied upon request.
2. Pump casing is fitted with a bronze/cast iron replaceable wear ring . Suction and discharge connection flanges are ANSI rated 150# maximum working pressure. Rotech can supply 200# or higher rated ANSI flanges connections if required.
3. Motor bearings are grease lubricated and are sized for a minimum of 20,000 hours L10 basic rating life or 100,000 hours median bearing life. Shaft is designed to limit the shaft deflection to no more than .022″ at the seal faces.