E Chemical metering pumps
DualArm Vertical from Armstrong.
in-line
pump
Haskel Energy Systems Ltd has introduced a new range of chemical injection and metering pumps. Haskel chemical injection pumps are equipped with integral pneumatic timers to control cycling speeds of between O50 cpm. Pressures to 690 bar and injection rates of between 0.5-250 litres per day can be accommodated within the range. All Haskel chemical pumps are compressed air or gas driven and require no electrics, thus making them very safe for high risk areas commonly found in on and off-shore locations. Contact:
Haskel
Energy
Sys-
The Armstrong dualArm tems Ltd, North Hylton Road, combines the advantages of a Sunderland SR5 3JD, UK. small footprint, requiring 2/3 Tel: +44 191 549 1212. less mechanical room space than conventional pumps. In addition, the unique casing design allows tandem operation, effectively doubling the capacity of a single pump when required, with no loss of single pump efficiency. This enables engineers to protect against “system surges” and to design energy-efficient HVAC systems which utilize compact, compatible components. dualArm Vertical In-Line pumps are designed with swing flapper valves in the discharge port, which prevents liquid recirculating when only one pump is operating. Isolation valves, installed in the suction and discharge ports, allow one pump to be removed for serv- Haskel chemical injection cing with the other pump pump with adjustable piston still operating. In addition, dy- stroke length and pneumatic namically balanced impellers stroke timer. assure smooth, vibration-free Mechanical operation. Models are available to 8 in connection sizes, with metering pumps 10 in diameter impellers, incorporating a wide range of industry standard and special duty motors. Michael Smith Engineers has expanded its Adony range of Contact: S.A. Armstrong Limmechanically flexed diaphragm ited, 23 Bertrand Avenue, type metering pumps by introToronto, Ontario MlP 2P3, ducing a new model, the Canada. Tel: +l 416 755 AhC62.In keeping with the 2291; Fax: + 1 416 755 6469. Adony design philosophy, the AHC62 pump has minimal
moving parts and this, combined with conservative stroking and stroke lengths, ensures service intervals are extended and maintenance is simple. Like all the Adony pumps, the AHC62 has a vernier-type stroke adjustment which can be altered when the pump is stationary or in operation. Available with PVC or 304 stainless steel wetted parts, this new pump is suitable for dosing most water treatment chemicals, and can be close-coupled with single phase or three phase IEC motors. The pumps can be supplied as stand alone units, for simple metering applications, or as part of more complex systems including tanks, monitors, controllers and pipe manifolds. This new pump offers accurate metering of chemicals at flowrates up to 1080 litres/hr at discharge pressures up to 3 BarG. The Adony range can be operated between 25% and
WORLD PUMPS
OCTOBER 1995
QUIPMfN&
E QUIPME%
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Nova Magnetics Ltd.
.;. the experts in magnetic drive technology
\
Zero Leakage High Efficiency High Horsepower Low Maintenance Safe Operation Custom Designs
For further information contact: PROJECT SALES 101 Research Dr. PO. Box 790 Dartmouth. Nova Scotia Canada Phone 902-424-8670 Fax 902-465-7384 e-mall nm/@‘nsrfc.ns.ca Nova Magnehcs Lfmded IS a wholly owned subsid/ary company of the Nova Scot/a Research Foundation
SUBMERSIBLE WASTE WATER PUMPS
The basic hydraulic design of the W-t pump has not changed from its predecessor. However, a number of design features are improved, resulting in the following advantages: ?? More pump for your money Since each W-t pump covers a wider operating range than corresponding traditional pumps, in many cases a smaller motor or smaller pump model will do the job - enabling the reduction of energy consumption, purchase price and installation expenses. ?? Fulfilling future hygienic standards. Adony AHC62 metering pump W+ pumps meet the European from Michael Smith Engineers. hygiene standards (EHEDG) which are expected to be im100% stroke length and, if plemented in the future. The automatic adjustment is reW+ passed the EHEDG (Eurquired, can be supplied with opean Hygienic Engineering motors for inverter rated Group) test at the internationspeed control proportional to 4ally recognised “TN0 Nutrition 2OmA signal. and Food Research instituteff in Contact: Sam Smith, Michael The Netherlands. Smith Engineers Ltd, Oaks ?? Improved shaft seal. Road, Woking, Surrey GU21 One of the major design fealPH, UK. Tel: +44 1463 tures is the new shaft seal, 771671; Fax: +44 1463 723110. which meets the strictest hygiene requirements. The seal is easy to rebuild Hygienic into a double shaft seal for use centrifugal with water-flushing or a barrier medium for aseptic applicapumps improved tions, by simply using two identical standard seals and an adapter. The shaft seal is APV Fluid Handling has intro- balanced for the entire pressure duced the new W+ pump range of the pump and is series. As the name implies, easy to replace: only the pump the W+ is a further develop- housing and impeller have to ment of the W-pumps. be dismantled.
APV has upgraded the W+.
WORLD
PUMPS
OCTOBER
1995
its W-pump range with the introduction of