Advanced Metering Pump Technology Walchem and Iwaki combined our talents to design the most innovative and
comprehensive metering pump product line in the world. With over 50 years of combined pump experience, in an array of different markets, the
Iwaki-Walchem partnership leverages our strengths to exceed even our toughest customer expectations. Committed to new product development, our products
are innovative and revolutionary. A perfect example is the EK pump - the first waterproof IP67 metering pump in the world.
E-Class Featuring four great pump series, EZ, EW, EK and EHE, E-Class pumps are powered by advanced
microprocessor-based electronics and superior mechanical design. With capacities up to 20 GPH and a maximum pressure rating of 215 PSI the E-Class has a
pump that will fit any water treatment, municipal and industrial wastewater, agriculture, water conditioning, car wash or any other chemical feed
application. And the entire Walchem E-Class pump line is backed with a comprehensive 2-year warranty that covers the
entire pump, including the liquid end and diaphragm.
High Speed Performance Walchem E-Class pumps operate at 360 strokes-per-minute. Most competitive
products operate at 180 SPM or less resulting in slug feeding, accelerated diaphragm wear and poor feed control.
Dual Bearing Support All Walchem E-Class pumps features dual bearing support. The armature and shaft are
supported with a bearing on each end, which ensures proper axial movement, enabling the Walchem E-Class to operate at 360 SPM while extending the life
of the diaphragm metering pump.
Superior Check Valve Performance Dual Check Valve Assemblies in both suction and discharge fittings feature
precision ball guides and tapered seats. Precise machining and molding of parts limit valve ball travel, ensuring that balls fully seat and seal with
every stroke. This superior check valve design and performance guarantees fast priming.
High Compression Ratio The compression ratio of a chemical metering pump is important because it affects
the pumps ability to prime and vent. The compression ratio is raised when you reduce the dead volume of the pump head during operation. All Walchem
E-Class pumps feature a very high compression ratio that ensures proper feed especially with off-gassing products. (i.e. Sodium Hypochlorite)
Economy without sacrificing quality or performance
EZ Series pumps offer precise chemical injection at a low cost. Manual or on/off
control for simple addition applications. This is a great water treatment metering pump for dosing cooling towers, well systems, when high performance is needed at
the lowest cost. We at Cannon Water use these pumps on most of our projects and find them to be superior to in workmanship.
Best feature: Self primes and does not loose prime due to Walchems excellent suction foot valve assembly. .
Manual or on/off control
Speed up to 360 strokes per minute
Digital interface
Capacities to 3.2 gph (200 ml/min)
Option for built in feed timer
Walchem Innovative Timer Control The EZ-Timer module integrates Walchem's EZB pump technology with a versatile programmable timer. Timed feed control can be programmed in daily or weekly cycles. The weekly schedules can be programmed in either 1 or 2-week cycles with a daily on-time. The daily timer can be set for multiple daily on-times. The EZ-Timer pump is a simple and effective way to automate additions in small systems.
Use this to feed Biocides without the need for a seperate controller. Perfect add on to your cooling tower.
