E-Wha Chemical Feeder Co., Ltd. is a company specialized in the manufacture of the metering pump. We have developed our unique single-head pump, and achieved the microseism prevention will it first in the world. Consequently we have attained patents from serveral countries, such as U.S., EU, Austrialia, Japan, Canada, Singapore etc.

Our system is highly cost effective because it is not necessary to interlock the pump, or install an air chamber or accumulator additional, to solve the problems caused by the conventional pulsatile metering pump.

Also the installation of the related components such as piping is easy, and the valve for draining can be added to remove residual chemicals inside the head, So maintenance can be performed safely, and conveniently.

And the products with a built-in relief valve & back pressure valve need not additional installation of back pressure valve, or relief valve, and can show its full performance. Also the products with high pressure plunger, and hydraulic diaphram are available, so the choice range of users are quite wide.

Materials in contact chemicals liquid are equipped diversely like PVC, SUS304, SUB316, SUS316L, PTEF, PVDF, etc, and peripheral devices used for performance and protection of the pump, such as back press valve, relief valve, STRAINER, CALIBRATION PORT, etc are available too.

Also the use of various chemicals, such as for water treatment is possible to Ewha pump. It is the first microseism prevention metering pump, with a built-in air chamber in the world. Please try it and evaluate our technology and convenience.