High-Performance In-line Pumps for Skyscrapers

Since land prices are steadily rising, there is a continued trend in the building industry worldwide towards ever higher skyscrapers. As a consequence, the demand for high-performance circulating pumps for HVAC systems is on the increase, and the new Etaline-R in-line pump series of KSB is suited to meet this demand.

Thanks to its compact in-line design, this pump type requires significantly lesser expensive space than conventional long-coupled models.

The new Etaline-R type series comprises 14 pump sizes and its maximum motor rating is 315 kW. The pump series generates a maximum flow rate of 1,900 cubic metres per hour and a maximum discharge head of 97 metres. The nodular cast iron casing and the mechanical seal are designed for operating pressures of up to 25 bar each, an indispendable prerequisite since the high-rise buildings’ static head often makes it necessary for the piping systems to be designed for 25 bar.

The mechanical seal employed is available in a large number of material variants. The maximum operating temperature should not exceed 140 °C. Each pump is delivered with an impeller whose diameter has been matched to its operating point. This ensures that the pumps achieve the best efficiency point and will not be oversized, as is usually the case with ready-made impellers. In addition, each pump set features an IE2 electric motor whose high efficiency contributes to the new type series cost-effectiveness.

Replaceable casing wear rings on discharge and suction side make for ease of service and maintenance even after long years of operation. Up to a motor rating of 45 kW, motor-mounted speed control systems type PumpDrive can be supplied optionally. For higher ratings, the speed control system is traditionally integrated in a control cabinet.

The new pump series will be presented at this year´s ISH trade fair in Frankfurt/Main, Germany (15 to 19 March 2011).

Picture: On the new in-line pumps PumpMeter will identify energy savings potential, too. (Image: KSB)

Source: KSB

Mouvex Introduces CC20 Eccentric Disc Pump

Mouvex announces the introduction of the CC20 Eccentric Disc truck transport pumps to the North American market. The CC20 was developed as a vehicle-mounted solution for loading and unloading transports, while its unique design also enables it to be used as a ground-based pumping unit.

Mouvex CC20 pumps incorporate eccentric disc pump technology that consists of a stationary cylinder and disc that is mounted to an eccentric shaft. As the eccentric shaft is rotated, the disc forms chambers within the cylinder, which increase at the suction port and decrease at the discharge port. During operation, the discharge pressure exerts itself against the eccentric disc, preventing it from slipping. This low slip between the disc and cylinder gives the CC20 eccentric disc pumps tremendous self-priming and line stripping capabilities.

CC20 pumps are also compact, providing reduced weight and easy installation. CC20 pumps are available in cast-iron, with optional bronze pistons and stainless steel shafts, and have built-in relief valves to protect the pump from overpressure situations. Special CC20 models are available for “solvents” and “waste oil and lubricants” applications that require the pumping of difficult-to-handle products. The CC20 is available with flow rates up to 158 gpm (35 m3/h) with pump speeds up to 750 rpm maximum. Optional features include drain plugs, direct drive through PTO drive shaft or hydraulic motor drive. Mouvex CC20 pumps are ideal and should be considered for waste oils, chemical applications that involve the transfer of soda, silicates, emulsions, inks, adhesives and resins; petrochemical applications that require the handling of solvents, fuels, crude oil, paraffin, gas oils and asphalt; and lubricants, molasses, oils and clean water.

Picture: Mouvex CC20 Eccentric Disc Pump

Source: Mouvex

Highly Efficient Waste Water Pumps

At the ISH trade fair 2011, KSB will present its Amarex/KRT waste water pump series coupled with energy-efficient motors which meet the new European IE3 Premium Efficiency requirements for standard motors.

These pump sets can be supplied with or without explosion protection. Whether operated at rated or low flow conditions, their efficiency exceeds that of standard submersible motors. And they are just as robust!

KSB has developed these motors and manufactures them, making sure they are perfectly matched to the mechanical and electrical requirements of waste water pump hydraulics.

By optimising the electric and magnetic design, the pump manufacturer has already fulfilled the requirements of efficiency class IE3 for its KRT series up to a drive rating of 150 kW.

Dry-installed pumps up to 45 kW can also be driven by the KSB-developed “SuPremE” motor, cutting the losses of the highly efficient IE3 motors by another 15 percent. These motors provide operators with a technology which, already today, more than surpasses the upcoming legal efficiency requirements.

Picture: The Amarex/KRT waste water pump series with energy-efficient IE3 motors (Image: KSB)

Source: KSB

High-Performance In-line Pumps for Skyscrapers

Since land prices are steadily rising, there is a continued trend in the building industry worldwide towards ever higher skyscrapers. As a consequence, the demand for high-performance circulating pumps for HVAC systems is on the increase, and the new Etaline-R in-line pump series of KSB is suited to meet this demand.

Thanks to its compact in-line design, this pump type requires significantly lesser expensive space than conventional long-coupled models.

The new Etaline-R type series comprises 14 pump sizes and its maximum motor rating is 315 kW. The pump series generates a maximum flow rate of 1,900 cubic metres per hour and a maximum discharge head of 97 metres. The nodular cast iron casing and the mechanical seal are designed for operating pressures of up to 25 bar each, an indispendable prerequisite since the high-rise buildings’ static head often makes it necessary for the piping systems to be designed for 25 bar.

The mechanical seal employed is available in a large number of material variants. The maximum operating temperature should not exceed 140 °C. Each pump is delivered with an impeller whose diameter has been matched to its operating point. This ensures that the pumps achieve the best efficiency point and will not be oversized, as is usually the case with ready-made impellers. In addition, each pump set features an IE2 electric motor whose high efficiency contributes to the new type series cost-effectiveness.

Replaceable casing wear rings on discharge and suction side make for ease of service and maintenance even after long years of operation. Up to a motor rating of 45 kW, motor-mounted speed control systems type PumpDrive can be supplied optionally. For higher ratings, the speed control system is traditionally integrated in a control cabinet.

The new pump series will be presented at this year´s ISH trade fair in Frankfurt/Main, Germany (15 to 19 March 2011).

Picture: On the new in-line pumps PumpMeter will identify energy savings potential, too. (Image: KSB)

Source: KSB

Griswol Pump Company Earns ATEX

Griswold Pump Company, a manufacturer of centrifugal pumps, announces that the standard and low-flow models of its 811 Series ANSI Centrifugal Pumps are now ATEX-compliant.

ATEX is the common name for European Union Directive 94/9/EC, which is the European safety standard for all equipment intended for use in potentially explosive atmospheres. With this certification, Griswold’s 811 ANSI pumps are now available for use in places where explosive atmospheres may arise through the mixture of air and flammable materials such as gases, vapors, mists and dusts. These conditions most commonly exist in chemical plants, refineries, liquid-storage terminals and latex plants.

All of the Griswold 811 ANSI pumps that meet the ATEX directive will now be designated by an “A” at the beginning of the model number, while a tag that contains the ATEX equipment group, category, zones and temperature class will also be added to the pump body. These pump models will also feature the “CE” mark, which makes them compliant with the European Union’s Machinery Directive 2006/42/EC and available for importation into the EU; the ATEX-compliant models are the only Griswold pumps that feature the “CE” mark.

Griswold’s 811 Series ANSI Centrifugal Pumps are ideal for a wide range of applications in potentially explosive atmospheres because they have been designed with an open-impeller that minimizes concentrated wear; self-tightening impellers that reduce leaks and failures; the ability to externally adjust the clearance so that peak efficiency is ensured even after wear-area loss; back pump-out vanes that reduce pressure on the shaft seal and bearings; and investment-cast impellers that are ultra-smooth to guarantee hydraulic and mechanical balance, as well as maximized seal and bearing life.

Picture: 811 Series ANSI Centrifugal Pumps (Image: Griswold)

Source: Griswold

Bell & Gossett Introduces New Series of Submersible Wastewater Pumps

ITT has introduced its new Bell & Gossett Impact series of high-efficiency submersible wastewater pumps that are designed for use in commercial and building services applications where wastewater or drainage must be disposed of quickly, quietly and efficiently.

Featuring Bell & Gossett’s self-cleaning impeller and casing, Impact Pumps are specifically configured to process solids more easily and reduce clogging while improving hydraulic efficiency. The pumps consume less energy and last longer, even in high demand conditions, and operate at efficiencies exceeding market standards by 10-15%.

Impact MK model pumps process solids easily, which means less clogging and therefore reduced maintenance. Greater durability also contributes to lower operating costs. The air-filled motor, dual mechanical seal and specially designed seal chamber improve overall pump efficiency and durability, resulting in less wear of pump components over longer periods of time, reducing both maintenance and energy costs. The seals also feature better leak detection and hard faces that endure abrasive conditions found in wastewater applications.

For low volume wastewater applications, the Impact MV model features a vortex impeller that is also self-cleaning; in low volume a vortex impeller is also suitable for handling media that contain sand and other abrasive solids.

Picture: Impact submersible wastewater pump (Image: ITT)

Source: Bell & Gossett

AxFlow Launches Compressed Air Metering Device

AxFlow has announced that it has taken on the European distribution of Warren Rupp’s AirVantage compressed air metering device for Sandpiper 2 and 3-inch metallic Air Operated Double Diaphragm pumps.

By managing the compressed air demand of the pump to the application, considerable energy savings can be made.

For users of Air Operated Double Diaphragm pumps a large percentage of the operating costs are attributable to compressed air. According to Warren Rupp, the power cost to run compressors makes up almost 70 percent of the total cost of the compressed air system, and 90 percent of most air compressor problems are located within the system itself. This is due to system layout, leaks, airline sizing, air treatment, piping materials and equipment specification. All of these issues reduce the run-time of compressed air systems, so improving efficiency is concentrated on the supply side. However, operators need to consider the demand side in order to ensure that equipment specifications are delivering efficient performance.

Self-powered by an internal generator that produces 12V AC, the AirVantage is available both as a complete pump and as a centre-section upgrade kit for existing installed pumps including both ball and flap valve construction. For intrinsically safe conditions, it is also available with an explosion-proof (ATEX certified) electrical assembly for operation in hazardous areas. The unit features an advanced learning programme that automatically adapts and controls the amount of air used under a variety of condition points, saving energy at the same time as maintaining a comparable flow.

AirVantage uses sensors to read pump velocity and switches the pilot valve during mid-stroke, allowing momentum or inertia to complete the pump stroke but without filling the diaphragm completely with air. This still moves fluid through the pump at comparable flow, but without consuming as much air. The sensor in the centre section of the pump reads the pump velocity and communicates this information with a microchip that calculates the pump’s ideal optimum point. This controls the amount of air that enters the diaphragm chambers, switching air to either side of the pump before the pump completes a stroke. As a result of employing a monitoring system that reads velocity, AirVantage can adapt as the pump’s condition point changes from low discharge pressure to high discharge pressure, and allow more or less air to complete the stroke continuously optimising energy consumption.

Reducing the volume of compressed air used to drive the Air Operated Double Diaphragm pump will create other benefits for the user other than just contributing to energy savings. By operating more efficiently there is less wear on the compressed air systems and the pumps which lead to longer working life and reduced maintenance and improved plant productivity.

Source: AxFlow