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Walchem and Iwaki combined their 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. |
Walchem Pumps Features: µ High Speed Performance E-Class pumps operate at 360 strokes per minute, providing high resolution chemical feed. Most competitive products operate at slower speeds, resulting in slug feeding, accelerated diaphragm wear and poor feed control. µ Engineered Longevity All E-Class pumps feature dual bearing support. The armature and shaft are supported with a bearing on each end, which ensures proper axial movement, enabling the E-Class to operate at 360 SPM while extending the life of the diaphragm. µ 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 guarantees fast priming and reliable performance. µ High Compression Ratio The compression ratio of a metering pump is important because it affects the pump’s ability to prime and vent. The compression ratio is raised when you reduce the dead volume of the pump head during operation. All E-Class pumps feature a very high compression ratio that ensures proper feed especially with off-gassing products (i.e. Sodium Hypochlorite). |
EZ Series electronic metering pumps offer precise chemical injection at a low cost. The compact size and simple control make them ideal for water treatment and OEM applications. EZ Series have outputs to 6.3 GPH (24 l/h) and a maximum pressure of 150 PSI ( 10 bar). Advanced microprocessor control and a turndown ratio of 360:1 make this series an exceptional value. The pumps are simple to operate with only three pushbutton keys and the unmatched turndown ratio provides both versatility and high resolution chemical feed which eliminates slug-feeding effects. EW Series electronic metering pumps offer superior dosing capability. The versatile control features enable the EW to be integrated into virtually any chemical feed application. Superb valve performance and advanced solenoid engineering combine to make a highly precise pump for the most demanding applications. EW pumps have outputs to 6.7 GPH (25.2 l/h) and a maximum pressure of 250 PSI (17 bar). The high speed of operation results in high resolution chemical feed and long service life. Quiet and compact, EW pumps prime in seconds and hold prime reliably. EK Series pump is the world’s first IP67 electronic metering pump and is the only pump in the industry guaranteed to operate submerged 3 feet under water for up to 30 minutes! This makes the EK Series pumps ideal for wet or high humidity environments such as irrigation, agriculture, food & beverage, car wash or paper mill applications. EK Series are highly precise metering pumps with outputs to 6.7 GPH (25.2 l/h) and a maximum pressure of 150 PSI (10 bar). The 360 stroke-per-minute operation results in high-resolution chemical feed and long service life. Quiet and compact, EK pumps prime in seconds and hold prime reliably. LK Series metering pump is the largest in the high performance line of pumps from Walchem Corporation. The LK is a motor-driven, mechanically actuated diaphragm metering pump with a maximum capacity of 114 GPH (432 l/h) and a maximum pressure of 225 PSI (1.5 MPa). The heart of the LK is a compact and very reliable dual-cam system drive and worm gear reducer. Roller bearings and oil bath lubrication ensure outstanding durability and wear resistance in continuous operation. The LK Series is ideal for chemical feed applications in a wide range of fields, including water treatment, chemical process, agriculture, mining and paper. Walchem and Iwaki have created a unique partnership with over 100 years combined pump experience in an array of different markets. The EH-HV series is specifically designed to accurately feed high viscosity chemicals. Equipped with rugged, machined PVC liquid ends and spring loaded ceramic valve balls, the HV series is designed for superior valve action and performance. Rated to 20,000 cps*, the HV series is available in four feed ranges from 1 to 4 GPH (at 50 PSI). Sophisticated design and backed with the industry’s only full 2-year warranty, the EH-HV series is the perfect solution for high viscosity feed applications. *Tested with 20,000 cps polymer verified with a Brookfield viscometer, Model LVF at 25°C, #4 spindle at 12rpm. |
"Bumper to Bumper" on all E-Class Pumps Including Wetted Parts |