Dl Industrial Flap Check Valve UPVC Check Valve Plastic Flap Check Valve

      Compared with Traditional Pipes, PVC-U Pipes Have Light Weight and ResistanceThe Advantages of Corrosion, Small Flow Resistance, Energy Saving, Quick Installation and Low Cost Are Vigorously Promoted and Applied with Remarkable Benefits. Since 1980s S, China Has Applied PVC-U Pipelines in Municipal Engineering and Construction Projects. after More than 10 Years of Promotion, PVC-U Pipelines Have Made Great Progress, but the Per Capita Consumption Is Still Less than That of the United States, Japan, 1/15 of Western Europe and Other Developed Countries and Regions. With the Announcement of "Vigorously Developing Chemical Building Materials" Jointly Issued by Five Departments Including the Ministry of Construction of the State, the Pace of Popularization and Application of plus-Sized Plastic Pipes Has Been PVC-U. Sanitary and Environmentally Friendly Water Supply Pipes Have Continuously Replaced High Energy Consumption, traditional Pipeline with High Pollution, High Cost and Low Health Index. Widely Used in: Urban Tap Water Supply Project, Water Supply Project inside and outside the Building, Water Supply Project of Industrial and Mining Enterprises, Buried Fire Water Supply Project, Irrigation Project of Farmland Water Conservancy Water Supply, Landscape Gardening Greening Water Supply Project, aquaculture Water Supply and Drainage Projects, Etc., and Achieved Good Economic and Social Benefits.

High Density Polyethylene (HDPE) Is a White Powder Or Granular Product. Non-Toxic, Tasteless, the Degree of Crystallization Is 80% ~ 90%, the Softening Point Is 125 ~ 135℃, and the Service Temperature Can Reach 100℃; Hardness, Tensile Strength and Creep Property Are Better than That of Low Density Polyethylene; Wear Resistance, good Electrical Insulation, Toughness and Cold Resistance; Good Chemical Stability, Insoluble in Any Organic Solvent at Room Temperature, Resistant to Acid, Alkali and Corrosion of Various Salts; the Film Has Little Permeability to Water Vapor and Air and Low Water Absorption; Poor Aging Resistance and Less Environmental Stress Cracking Resistance than Low Density Polyethylene, Especially the Thermal Oxidation Will Reduce Its Performance, therefore, Antioxidant and Ultraviolet Absorber Must Be Added to the Resin to Improve the Deficiencies in This Aspect. The Thermal Deformation Temperature of High-Density Polyethylene Film Is Relatively Low under Stress, So Attention Should Be Paid When Applying It.