xl150t

Sewage Check Valve 1.long using life 2.Self cleaning 3.Withstanding wearing 4.Quiet operation Detailed description of Sewage check valvesDuckbill Valve is our special product,and it is used for draining sewage.In such foreign countries as Spain or America,it is usually named as duckmouth-shaped valve.We are continuoully doing our best to make this valve more practical and more perfect.The valve ...