www.worldpumps.com WORLD PUMPS July 200712

n e w s p ro d u c t a n d s e r v i c e sn e w s p ro d u c t a n d s e r v i c e s

Air Dimensions Inc (ADI) has developed New Solid Teflon, a diaphragm pump whixh has been designed for the sampling of corrosive emissions for vacuum, flow or pressure applications in environmental or process control industries.

ADI says that the pump is 100% oil free, leak free and contamination free and is suitable for applications requiring a diaphragm pump for environmental and process control sampling,

automotive emissions sampling and medical/laboratory in the utility, refinery, chemical processing, pharmaceutical, pulp and paper, mining, medical, automotive, government, environmental and emission monitoring industries.

ADI’s gaseous diaphragm pumps are designed for long life and continuous operation with very minimal maintenance requirements, the company adds.

Corrosion resistance for diaphragm pumps

Vacuum pumps require low air pressure Linear motor oil pump could cut energy use

Centrifugal pump has high capacity Liquid specialist Tapflo has launched a compact, magnet-powered centrifugal pump designed for the distribution of low-viscous liquids. The new pump, Tapflo CTM, uses magnet power which allows the construction to be entirely closed, thus eliminating leakage risk. This means that the pump is suitable for handling toxic, corrosive or other hazardous liquids, Tapflo says.

The design employs fixed and rotating bushings instead of the traditional axle for the suspension of the impeller. This

solution makes the pump less sensitive to pressure impact and easier and safer to dismantle and assemble for service. The

pumps are built for continuous running and can be dry run without damage for short periods.

Tapflo pumps are made of glass fibre reinforced polypropylene and are suitable for industries such as OEM manufacturers, chemicals processing, foodstuffs, photographic developing and the surface treatment industry. The CTM pump can distribute liquids with temperatures of up to 70°C. CTM pumps comes in three versions with capacities between 4.5 to 10 m3 of liquid per hour. The pump is also available in a PVDF plastic version that can operate with liquids of temperatures up to 80°C.

A line of compact, multi-stage venturi vacuum pumps that need only 45 psi air pressure, but provide the same holding capacity as conventional pumps requiring 80 to 100 psi, has been introduced by US-based air pump specialist Anver Corp.

Anver’s Air-Miser MSP-AM series multi-stage air-driven vacuum pumps are now offered in five sizes from 0.06 to 0.64 SCFM and operate at 45 psi (3.1 bar) air pressure, about half that

of conventional venturi-style pumps, the company says.The pumps are made of anodized aluminium, have brass nozzles, and can be

supplied with a wide range of options to meet specific application requirements. Anver Corp says that the pumps provide a 100% duty cycle and equal the performance of much larger pumps, while being safer and quieter than conventional venturi-style pumps. They measure 3.78 long x 1.26 wide x 98 high (96 mm x 32 mm x 24.9 mm), include a 2.76 in tall x 2.76 wide (70 mm x 24 mm) muffler and are offered with adapters for G to NPT attachment.

The China facility of US-based motor specialist Harbin Electric has developed a ‘green’ vertical oilwell pump that could cut energy requirements by 20-30% and reduce maintenance costs when compared to traditional oilwell pumps.

The Tower Type Oil Pump is reportedly the world’s first oilwell pump to incorporate a large-thrust, cylindrical synchronous linear motor. It incorporates a patented technology that measures the tension required to lift liquid out of a wellhead, and immediately adapts pumping in order to reduce energy required. The technology also has automatic and reversing speeds.

A prototype of the pump has been running in a oilfield owned by Daqing Petroleum for eighteen months. “This product development is an important milestone for our company,” claims Tianfu Yang, chairman and CEO of Harbin.

The Air-Miser air-driven vacuum pump.

Tapflo’s magnet-powered centrifugal pump.

ABB Drives has developed LonWorks, a new interface for the ACH550 series variable frequency drive which, according to Mike Olson, manager – HVAC applications for ABB low voltage drives, “represents nothing less than a paradigm shift in serial communications and control capabilities”.

The LonWorks interface, RLON-01, supports pass-through I/O, allowing LonWorks integrators to use the ACH550 drive’s digital inputs and outputs as “free” I/O points in their system. These I/O points can be used to monitor and/or control external devices, such as dampers that may or

may not be directly related to the VFD HVAC application. The interface can also monitor digital inputs and outputs, command digital outputs, monitoring external 1/external 2 status, monitor hand/auto status, command external 1/external 2 state, command drive speed and/or PID set point, monitor motor voltage and monitor drive last fault.

“While a LonWorks interface has been available on ABB HVAC drives since 1995, this latest advancement brings the power of LonWorks-based serial communications to a new level,” Olson claimed.

Interface for HVAC drives