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Help CenterFlexible Rubber Flap Check Valve for Water and Wastewater Systems, DN50-DN2000, EPDM Material
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Shanghai Sote Valve Co., Ltd., a professional valve manufacturer based in Shanghai, China, introduces its premium Flexible Rubber Flap Check Valve engineered for demanding water and wastewater systems. This valve ensures reliable backflow prevention with minimal maintenance requirements, offering exceptional durability and cost-efficiency for municipal and industrial applications. Crafted with high-grade EPDM material, it withstands harsh environments while maintaining optimal sealing performance. Our valve’s innovative design reduces water hammer effects and energy loss, making it an indispensable component for modern fluid control systems.
The core features of our rubber flap check valve include:
- Flexible EPDM Flap: Provides superior elasticity and corrosion resistance, ensuring tight sealing even with debris buildup.
- Full-Bore Design: Minimizes pressure drop and allows unimpeded flow of solids in wastewater.
- Robust Construction: Reinforced fabric layers enhance structural integrity for sizes up to DN2000.
- Low Opening Pressure: Requires only 0.1 bar to activate, reducing pumping energy costs.
- Silent Operation: Prevents valve slam and associated pipeline vibrations.
Technical specifications for standard configurations:
| Parameter | Value |
|---|---|
| Working Pressure | PN10/16 (Customizable) |
| Temperature Range | -20°C to +120°C |
| Flange Standards | EN 1092-2, DIN, ANSI (Optional) |
| Flow Direction | Horizontal or Vertical Upflow |
Installation benefits include reduced maintenance downtime due to the valve’s self-cleaning capability and abrasion-resistant composition. For wastewater treatment plants, it prevents reverse flow during pump shutdowns, protecting equipment from damage. Municipal water networks benefit from its leak-tight seal that maintains system pressure integrity. Customization options like special rubber compounds for chemical resistance or extended temperature ranges are available upon request.
Backed by Shanghai Sote Valve’s expertise in fluid control solutions, this product undergoes rigorous quality control protocols. Our manufacturing facility in Shanghai employs advanced molding techniques to ensure dimensional accuracy across all sizes from DN50 to DN2000. With ISO 9001-compliant processes (optional certification), we deliver valves that meet international performance standards. The combination of EPDM’s ozone resistance and our reinforced flange design guarantees a service life exceeding 10 years in typical wastewater environments.
FAQ Section
Q1: Can this valve handle sewage with solid particles?
A: Yes, the full-bore design and flexible flap allow passage of solids up to 35% of pipe diameter without clogging.
Q2: Is EPDM suitable for potable water applications?
A: Absolutely. EPDM complies with WRAS and NSF/ANSI 61 standards for drinking water upon request.
Q3: What maintenance is required?
A: The valve is virtually maintenance-free. Periodic visual inspection for flap integrity is recommended.
Q4: Can it be installed in vertical pipelines?
A: Yes, but only in upward flow directions. Horizontal installation is preferred for optimal performance.
Q5: Are special flanges available?
A: We offer flanges per EN, DIN, ANSI, or JIS standards. Specify requirements when ordering.
Q6: What’s the lead time for DN1200 valves?
A: Standard DN1200 valves ship in 3-4 weeks. Rush services may be available.
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