Walchem EHE Pump

The workhorse of the Walchem E-Class - no other electronic metering pump can match the power and performance of Walchem's EHE Series pumps.

Walchem EHE pumps have outputs up to gallons per hour and pressure capabilities from 30 to 150 PSI. Combining the Walchem EHE performance and a turn-down ratio of 1800:1 yields one of the most versatile chemical metering pumps on the market today.

Superior mechanical design and quality of manufacturing merge to create a pump better than the sum of its parts. The Walchem EHE Series is ideal for chemical feed applications in a wide range of fields, including water treatment, chemical process, municipal and industrial wastewater.

Powerful
The Walchem EHE 35 size pump is the most powerful electronic metering pump currently available. A pump's maximum pressure rating times its maximum output at that pressure gives a relative measure of the pump's hydraulic output power, a "power index".

Control
Microprocessor-based circuitry provides the operator adjustment of pump speed and external input settings via a 4-button keypad. The Walchem EHE chemical pump comes with digital and analog external mode control.

Summary Of Key Benefits

High Speed Performance: Walchem 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.

Engineered Longevity: All Walchem 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.

Superior Check Valve Performance : Walchem pumps have 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.

High Compression Ratio : The compression ratio of a Walchem metering pump is important because it affects the Walchem 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 Walchem E-Class pumps feature a very high compression ratio that ensures proper feed especially with off-gassing products (i.e. Sodium Hypochlorite).

Walchem and Iwaki have over 100 years of combined pump experience. This partnership has led to the dssign of the most innovative and comprehensive metering pump product line in the world, the E-Class Metering Pumps. The Walchem E-Class pump features five great series: EZ, EW, EK, EHE, and EHF. The wide range of capabilities within the Iwaki Walchem EClass metering pump ensures that there's a model to fit any water treatment, food & beverage, agriculture, water conditioning, car wash, or other industrial chemical feed pump applications.