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China Suppliers Factory Flange Rubber Disc Soft Seal Swing Check Valve H44X-10/16 for DN40-DN300 Sizes
Valve Type: |
Swing check valve |
Structure: |
Rubber flap type |
Standard: |
DIN F6 |
Workmanship: |
Investment casting |
Sealing direction: |
Single-directional |
Sealing grade: |
Zero leakage |
Temperature: |
-20°C < T < 120°C |
Operation: |
Self-starting |
Characteristics
Boasting a ductile iron body and an elastic rubber flap core, this automatic check valve operates without any external drives. It leverages forward medium thrust to open the rubber flap for smooth circulation, and relies on reverse medium pressure paired with the flap's elastic reset force to deliver leak-proof sealing. The valve's standout design merges the exceptional structural strength of ductile iron with the unrivaled flexible sealing advantages of rubber flaps, ensuring optimal performance in diverse low-pressure applications.
Advantages
1
Flexible seal, excellent leak proof performance
The valve disc is made of elastic rubber material and is in surface contact with the valve seat for sealing. It can automatically compensate for minor wear and deformation of the sealing surface and achieve a tight fit even under low pressure conditions, effectively avoiding medium leakage. Compared to metal hard sealed check valves, they have stronger adaptability to medium pressure fluctuations, especially suitable for pipeline systems with non particle or small particle media such as clean water and sewage.
2
Simple structure, low failure rate
Without vulnerable moving parts such as hinges, springs, and shafts, traditional check valves avoid the problem of opening and closing failure caused by component rust, jamming, and fatigue fracture at the root. The rubber valve disc is wear-resistant, anti-aging, and has a long service life, greatly reducing the maintenance frequency and replacement cost of the valve.
3
Easy installation and strong adaptability
The valve body is mostly made of ductile iron material, which is lightweight and has high strength. The flange connection method can be directly connected to the pipeline without complex calibration; Supports various installation methods such as horizontal and vertical (bottom-up), suitable for diverse scenarios such as urban water supply and drainage, sewage treatment plants, high-rise buildings, and agricultural irrigation.
Packing
Standard export wooden case packaging
Application Scenarios
This valve finds extensive application across diverse sectors including urban water supply and drainage networks, sewage treatment facilities, fire protection systems, HVAC installations, water treatment plants and farmland irrigation systems. It demonstrates superior suitability for low-pressure, high-flow pipeline systems where the conveyed medium contains trace amounts of impurities, and is recognized as a standard anti-backflow solution for civil construction and municipal engineering applications.
Frequently Asked Questions
Q
What is a rubber flap swing check valve and how does it work?
A rubber flap swing check valve is a self-actuating valve designed to allow fluid flow in one direction while preventing backflow. It uses an elastic rubber flap that opens under forward medium thrust and closes automatically via reverse medium pressure combined with the flap's natural elastic reset force — requiring no external power or manual operation.
Q
What standards does this valve comply with?
This swing check valve is manufactured in accordance with the DIN F6 standard, ensuring dimensional accuracy, material quality, and performance consistency required for industrial and municipal pipeline applications.
Q
What is the operating temperature range of this valve?
This valve is rated for operating temperatures between -20°C and 120°C (-4°F to 248°F), making it suitable for a wide range of water and fluid handling applications in both cold and moderately heated environments.
Q
What are the typical application scenarios for this valve?
This valve is widely used in urban water supply and drainage networks, sewage treatment plants, fire protection systems, HVAC installations, water treatment facilities, and farmland irrigation systems. It is especially well-suited for low-pressure, high-flow pipeline systems carrying media with minimal impurities such as clean water or sewage.
Q
How does the rubber flap valve compare to a metal hard-sealed check valve?
Unlike metal hard-sealed check valves, rubber flap check valves offer surface-to-surface contact sealing that can self-compensate for minor wear and deformation. They achieve zero-leakage performance even under low-pressure conditions and are more adaptable to pressure fluctuations. They also eliminate common failure points such as hinges, springs, and shafts, resulting in a lower maintenance requirement and extended service life.
Q
What installation orientations are supported?
This valve supports both horizontal and vertical (upward flow) installation orientations. Its ductile iron body is lightweight yet high-strength, and the flange connection design allows direct integration into existing pipelines without complex calibration, making it highly adaptable for various site conditions.