XRHL Long Coupled Self Priming Centrifugal Pump

XRHL Long Coupled Self Priming Centrifugal Pump The XRHL is the self-priming version of the XHL long coupled end suction centrifugal pump. Either an electric or air vacuum priming pump is fitted to the body to enable full self-priming capability. This variation has the full ability of the standard version; however, it can only be used for clean liquids such as sea water and fresh water containing no solid particles. The XRHL long coupled, end suction, single stage horizontal centrifugal pump is standardised to EN 733/DIN 24255 and can be used for a vast range of applications in the industrial and marine markets. Common applications include energy plants, mining, firefighting, irrigation, water supply, water treatment, pressurisation, grey water, dewatering, building systems, ballast transfer, sea water general service, scrubber systems, marine and cooling/heating conditioning (HVAC). This self-priming centrifugal pump is required when it is not possible to supply the inlet with fluid via gravity. This range is ideal for installations where the pump sits above the supply tank requiring a suction lift or where the inlet conditions are difficult such as long pipe runs. Priming is achieved by the main pump and the priming system working in tandem. They operate simultaneously, the priming device works by removing all the air from the inlet pipework, this draws the fluid into the body of the main pump, thus priming. A pressure switch then shuts down the priming device once the adequate pressure is achieved to enable to main pump to operate independently. The electric or air powered priming options are down to customer preference, however the air vacuum version is better suited for installations with long inlet pipe runs or where long priming times are anticipated as this option can dry run for small periods of time without damage. The long coupled horizontal centrifugal pump configuration has many benefits: The long-coupled design is very easy to maintain as it is possible to access the pump head without removing the motor. This centrifugal pump is also more robust and designed for continuous use as additional bearings are installed in the pump head, these take a large deal of strain away from the motor during operation. The back pull-out design allows the motor to be removed while the pump is still connected to the pipework, this in turn allows time saving while the pump is serviced/maintained. The centrifugal pump and motor have independent shafts, this means that only the pump shaft will need to be replaced in the event of it breaking. Other less robust horizontal centrifugal pumps on the market only use the motor shaft, this means that if the shaft breaks, the entire motor needs to be replaced. The long-coupled design means that there is a large space between the pump and motor, this in turn protects the motor from fluid ingress in the case of a seal failure. Wear rings can be installed in the pump head, this is a sacrificial part that wears first protecting the impeller and casing from wear and prolonging the life of these parts and therefore the pump. The long coupled horizontal centrifugal pump complies with DIN 24255 and EN733, this means that the pump is dimensionally the same as many other pumps on the market, this enables the replacement of most horizontal centrifugal pumps that are already installed. Product summary • Self-priming horizontal centrifugal pump fitted with an air powered or electric priming pump• Can pump a wide range of clean low viscosity fluids• Back pull out design to ensure quick and easy maintenance• Maximum fluid temperature of 140°C• Independent pump and motor shafts• Available in cast iron, 316 stainless steel, duplex stainless steel, bronze and other materials upon request• Suction and discharge flanges conform to EN 1092-2 / PN 16. Flanges according to EN 1092-1 / PN 16 for steel and stainless steel casings. If required, ANSI/ASME flanges can be supplied.• Gland packing or mechanical seal options available• Casing wear rings to prolong casing and impeller life• Single phase and three phase 50hz / 60hz motors. IP55 as standard.• Independent certification is available upon request• Manufactured in accordance with standard DIN24255 / EN 733• Casing wear rings to prolong casing and impeller life• Low NPSH• ISO 9905• Assembly without alignment• All impellers are balanced according to ISO 1940 class 6.3• Long coupled with baseplate• Bearings are normally lifetime grease lubricated bearings, although certain sizes are oil lubricated Flow RateUp to 1500m³/hrHead (Pressure)Up to 100mInlet/Outlet SizesDN32 to DN250Operating Temperature-10°C to +140°CDrive OptionsElectric Motor, Engine

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