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Help CenterDual Plate Wafer Check Valve, Wafer Design, Suitable for Pump Discharge & Pipeline Systems
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As a specialized valve manufacturer based in Shanghai, China, Shanghai Sote Valve Co., Ltd. designs the Dual Plate Non-Slam Check Valve specifically for demanding industrial applications. Engineered with precision, this wafer-style valve prevents backflow efficiently while eliminating water hammer – a critical solution for protecting pumps and pipeline integrity across multiple sectors. Our valve stands out through its robust construction and field-proven reliability in municipal water systems, chemical processing plants, and HVAC installations.
The core innovation lies in its dual-disc mechanism that delivers smooth closure without slamming, significantly reducing maintenance costs and downtime. With over two decades of engineering expertise in flow control solutions, we’ve optimized every component to withstand high-cycling operations and corrosive environments. This valve represents our commitment to delivering performance-driven products that exceed industry standards while offering exceptional lifecycle value.
Key Technical Advantages:
Non-Slam Operation: Spring-assisted discs close before flow reversal, preventing destructive hydraulic shocks
Compact Wafer Design: 50% lighter and shorter than swing check valves, reducing structural support requirements
Low Pressure Loss: Streamlined flow path maintains system efficiency with minimal Cv drop
Multi-Material Compatibility: Available in ductile iron (epoxy coated) or full stainless steel construction
Bidirectional Sealing: Resilient EPDM/NBR seats provide bubble-tight shutoff in both flow directions
Standard technical configurations include:
| Model Series | Pressure Rating | Temperature Range | Disc Material |
|---|---|---|---|
| SVC-DP200 | ANSI 150 | -20°C to 120°C | Ductile Iron + NBR |
| SVC-DP300 | ANSI 300 | -30°C to 150°C | SS316 + EPDM |
Installation Flexibility: Designed for horizontal or vertical upward flow orientations, the valve features a centerline-mounted hinge pin that minimizes wear and maintains alignment under variable flow conditions. External visual indicators allow immediate verification of disc position during maintenance checks. For critical services, optional position sensors can be integrated for remote monitoring capabilities.
Shanghai Sote Valve's manufacturing facility employs CNC machining centers and automated assembly lines to ensure dimensional consistency across all sizes. Each valve undergoes rigorous testing including hydrostatic shell tests and seat leakage verification per API 598 standards. Our technical support team provides comprehensive installation guidance and failure analysis – backed by 18-month warranty coverage on all standard products.
With exports to 37 countries and ongoing R&D investments, we continuously refine our valve designs to meet evolving industry requirements. Choose our dual plate check valve for:
40% longer service intervals compared to conventional check valves
Reduced energy consumption through optimized flow characteristics
Interchangeability with major international valve brands
Frequently Asked Questions:
Q1: Can this valve be installed directly after centrifugal pumps?
A: Yes, its quick-closing mechanism specifically prevents pump damage from reverse rotation. Minimum straight pipe run requirements are 5x diameter upstream and 2x downstream.
Q2: Is the wafer design suitable for high-vibration applications?
A: Absolutely. The dual-plate configuration inherently dampens vibration better than single-disc designs. For extreme cases, we offer reinforced disc springs.
Q3: What maintenance is required?
A: Our valves are designed maintenance-free for 5+ years in typical water service. Periodic external inspection of hinge areas is recommended in abrasive media applications.
Q4: Are custom face-to-face dimensions available?
A: Customizations are possible for large orders, including special coatings and extended body lengths for retrofit applications.
Q5: How does it perform with slurries or viscous fluids?
A: The full-port design minimizes clogging risks. For heavy slurries, we recommend stainless steel construction with hard-faced discs.
Q6: What certifications do you provide?
A: Standard valves come with material test reports (MTRs). Third-party certifications like API 6D or CE are available upon request.
Q7: Can it handle thermal cycling in steam systems?
A: Our SVC-DP300 series with metal-seated options is engineered for steam service up to 232°C (450°F).
Q8: What is the lead time for 24" valves?
A: Standard sizes ship within 15 working days. Expedited production may be arranged for urgent projects.
Contact our engineering team in Shanghai today for project-specific recommendations. We provide detailed CAD drawings, pressure drop calculations, and installation manuals with every order. Leverage our global logistics network for timely delivery – whether you require a single valve for maintenance or bulk quantities for new construction projects.
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