The flip side of fresh potable water going into a facility or structure is the waste water or sewer output. These lines collect all the waste fluid and solids and direct them to a sewage treatment plant. These treatment plants feature a lot of low pressure  .

Regulating valve is the most important control valve in industrial automatic control.Eicmation comes from 30 years experience in manufacturing thin-film control valves,product design which is based on customer requirements -direct stroke control valves,which is in order to meet the requirements of various working conditions,modular design concept,so that our all straight stroke control valve trims to achieve 100 percent replacement,different valve trims combination can meet variety conditions that ordinary or bad fluid or gas conditions of the process requirement.