EHE Series | Metering Pumps0 pages

An Iwaki America Company
EHE Series | Metering Pumps
OVERVIEW
The EHE is the workhorse of the E-Class metering pumps.
EHE Series pumps have outputs up to 20 GPH (75 l/h) and
pressure capabilities to 150 PSI (10 bar). Combining the
EHE performance with a turndown ratio of 1800:1 yields
one of the most versatile pumps in the water treatment
industry today.
Superior mechanical design and quality of manufacturing merge
to create a pump better than the sum of its parts. The
versatile control features enable the EHE to be integrated
into virtually any chemical feed application. The 360 strokeper-minute operation results in high-resolution chemical
feed and long service life. EHE pumps prime in seconds
and hold prime reliably.
SUMMARY OF KEY BENEFITS
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.
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.
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.
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).