Product Overview
The Rubber Disc Check Valve is designed for low-pressure water supply and drainage systems, featuring a simple structure, flexible rubber disc, and reliable backflow prevention.
The rubber disc is reinforced with steel or nylon fabric and provides excellent sealing, low noise, and long service life.
It is widely installed in municipal water plants, pipelines, sewage systems, HVAC circulation, and pump discharge lines.
Product Advantages
● Quiet Closing: Rubber disc absorbs shock and eliminates water hammer noise.
● Long Service Life: Flexible disc resists wear and fatigue, ideal for frequent pumping cycles.
● Excellent Sealing: Bubble-tight closure for clean water and wastewater systems.
● Low Maintenance: Simple structure and durable rubber components.
● Energy Efficient: Smooth flow path minimizes head loss.
Size Range
● DN40 – DN800
Pressure Rating
● PN10 / PN16
Standards
● Design Standard: EN 12032 / EN 1074
● Test Standard: EN 12266
● Flange Standard: EN 1092-2
Industry Applications
● Municipal water supply systems
● Sewage and wastewater treatment plants
● Irrigation and agricultural pipelines
● HVAC water circulation networks
● Pump discharge and booster systems
● Industrial water and cooling pipelines
FAQs
1. When should I choose a rubber disc check valve instead of a metal seated check valve?
Rubber disc check valves are preferred for water, wastewater, and slurry applications where tight sealing, low noise operation, and reduced closing impact are required.
2. What type of rubber material is suitable for different media?
EPDM is commonly selected for water and wastewater applications, while NBR is often used for oil-containing fluids. Material selection depends on temperature, chemical compatibility, and operating conditions.
3. How does a rubber disc check valve reduce water hammer?
The flexible rubber disc allows smoother closing compared with traditional metal discs, helping reduce impact forces and pressure surges in pipeline systems.
4. Why are rubber disc check valves suitable for wastewater applications?
Rubber disc check valves are commonly used in wastewater and sewage systems because the flexible disc design handles suspended particles better than some traditional sealing structures.
5. What information is required when selecting a rubber check valve?
Engineers typically consider pipe size, pressure rating, medium type, temperature, installation position, flange standard, and required sealing material.
Tianjin Dingliu valve Industry Co., Ltd. is a high-tech enterprise specializing in the valve and automation industry.
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