Sludge valve installation should be considered to exclude the tube sediment and maintenance of the venting of dirt places, sludge valve should be installed in the lowest point of the original pipeline, and use the sewage flow into a tangential sludge Mud, should also take into account emissions Scouring process on the basis of the attachment, mud valve installation should be promptly closed. Due to the fact that the branch pipe of the mud valve may be discharged on the left side of the main pipe or on the right side of the main pipe, special attention should be given to the discharge direction when signing the contract for processing the mud valve. That is, the direction of the main pipe socket . Sludge valve for water treatment plants as the discharge of sewage sludge and wastewater tank. This valve is angular structure, the internal nylon reinforced rubber diaphragm, for long-term use mud valve.