We offer Drainage Management System that is a complete solution to drainage concerns of many industries, such as chemical and oil refinery factories. It is the management system where conventional drainage system is intercepted by a water control structure, which effectively function as an in-line dam, allowing the drainage outlet to be artificially set at levels ranging from the soil surface to the bottom of the drains. We offer two major systems where in first, water level is controlled with structures by adding or removing logs or using float mechanism to control the opening and closing of a flow valve.

Introduction
As to discharge of condensate generated from an air compressor, problems of high air loss and high oil content have been identified, which leads to energy loss and environmental problems.

It has been known that a condensate discharge trap has significantly low reliability, including float type and time solenoid valve type.

In case of the float type trap, the nozzle is often clogged up (with impurities such as scale due to the narrow nozzle size of 0.7mm). The time solenoid valve type trap has huge air loss and short life span less then 1 year.

If a drain trap with zero air loss and effective discharge is applied to drain lines of an air compressor such as after cooler, air dryer, air tank, etc., any accident caused by a condensate leak can be prevented in advance.

Moreover, condensate generated from an air compressor is severely contaminated by the oil within the compressor and pollutants in the air and thus has a high oil (Normal hexane) content of nearly 2,000ppm(2,000mg/L), affecting the water quality of rivers and public health.