ABS has launched the EffeX range, which it claims is the world’s first submersible sewage pumps to use premium-efficiency motors that reduce energy consumption and environmental impact.
John Crane has developed a split seal which provides wet-running and dry-running service capabilities with one common seal platform. The new Type 3740 cartridge split seal is available in two variations – the Type 3740 for wet-running and the Type 3740D for dry-running services.
The new range has greater safety margins and blockageresistance free-solids passage of at least 75 mm. The efficient IE3 motor included has been designed and tested in
accordance with the IEC 60034-30 standard, and has optimised hydraulics, giving the best total efficiency available, ABS says. The range is suitable for wastewater treatment facilities and matches anticipated forthcoming legislation in many countries regarding higher motor efficiency for submersible pumping. www.absgroup.com
The Type 3740 wet-running seal can successfully operate in applications up to 450 psig and withstand shaft run-outs of up to 0.060 in TIR, while the Type 3740D dry-running version accommodates pressures from vacuum conditions up to 80 psig and shaft run-outs of up to 0.150 in TIR.
The Type 3740 wet-running and the Type 3740D dry-running seals.
can have large levels of shaft run-out.
Rhe EffeX submersible range uses premium-efficiency motors.
The Type 3740D dry-running split seal is designed for large shaft run-out and harsh operating conditions in top-entry vessel mixing services and other dry-running applications. Wet-running equipment applications include pumps and side-entry agitators, while the dry-running version is for top-entry mixers and other dry environment sealing services that
AODD device saves almost 50% energy
Corrosion resistant submersibles for wells
Valve specialist Proportion-Air Inc has developed MizAir, a patent protected electro-pneumatic 'smart' device which uses fuzzy logic to analyze each stroke of a pump. According to its manufacturers, the device could save up to 50% of the energy used by air operated double diaphragm (AODD) pumps.
ITT Lowara has developed a new line of stainless steel submersible pumps for 10 in and 12 in wells.
AODD pumps use a large amount of compressed air to operate, and the most effective way to make AODD pumps more energy efficient is to better manage the air they consume. www.worldpumps.com
However, no two AODD pumps are the same. Proportion-Air Inc says that MizAir 'learns' a pump’s unique characteristics and automatically makes internal adjustments to reduce the air consumption of the pump by as much as 50%, therefore reducing the energy required to run it by the same amount with little to no effect on pump throughput, fluid flow or flow rate. MizAir is plumbed to the air input side of the pump and provided with 24 volt DC power. www.proportionair.com
The Z10 and Z12 line of pumps have high corrosion and wear resistance in aggressive environments, the company says. For highly aggressive water environments a full duplex version is also available. The new series includes five main sizes, from the Z10150 with 150 m³/h nominal flow to the Z12420 which has a nominal flow of 420 m³/h. The
Features include a factory-preassembled rotor assembly, a separate stationary seal face for visual alignment of the halves, large shaft run-out capabilities for both wet-running and dry-running versions and high pressure ratings for a range of split seal applications. www.johncrane.co.uk
complete range offers heads up to 545 m and flows of up to 520 m³/h. The pumps have a hydraulic efficiency that for duty point between 120 m³/h and 460 m³/h is higher than 80%. The Z10 & Z12 pumps are suitable for use in deep wells, pressure boosting and water distribution in civil and industrial systems, water level control, dewatering, fire fighting and irrigation. www.lowara.co.uk