Fully rubber lined dual plate check valves are specifically designed for corrosive and abrasive media applications. They feature a full rubber lining on all internal surfaces, significantly enhancing the valve’s wear and corrosion resistance. The compact wafer design makes them ideal for installation in systems with limited space.
Fully Rubber Lined Dual Plate Check Valve Technical Data Sheet
General Specifications
Parameter | Specification |
Valve Type | Dual Plate Wafer Check Valve |
Design Type | Wafer, Dual Plate (Spring-loaded tilting disc) |
Nominal Size (DN) | DN50 ~ DN600 (2″ ~ 24″) |
Pressure Rating | PN10 / PN16 / PN25; Class 125LB / 150LB |
End Connection | Wafer Type (clamped between flanges) |
Face-to-Face Standard | API 594 / ISO 5752 / EN 558 |
Design Standard | API 594 / JB/T 8937 / DIN 3356 |
Testing Standard | API 598 / GB/T 13927 / ISO 5208 |
Certification | CE, WRAS, ACS and other certifications available |
Material Construction
Key Design Features
Feature | Benefit |
Full Internal Lining | The valve body interior, sealing surfaces, and discs in contact with the medium are fully coated with rubber, providing excellent corrosion, wear, and abrasion resistance. |
Dual Plate Design | Two spring-loaded half-moon plates rotate on a central hinge pin for low pressure drop and high flow capacity (Cv values). |
Spring-Assisted Closure | Torsion springs ensure the plates close rapidly and automatically upon flow reversal, preventing backflow and minimizing the water hammer effect. |
Silent Operation | The controlled, spring-assisted closure eliminates water hammer and reduces pipeline vibration, contributing to quieter operation. |
Compact & Lightweight | The wafer design is shorter, lighter, and takes up less space than conventional swing check valves, making it easy to install between standard flanges. |
Excellent Sealing | Rubber-to-rubber seating ensures bubble-tight shutoff and zero leakage, meeting EN 12266-1 Class A standards. |
Versatile Installation | Can be installed in horizontal or vertical upward flow lines, provided spring torque is suitable for the application. |
Performance Data
Parameter | Specification |
Working Temperature Range | -15°C to +80°C (typical for EPDM/NBR) |
Suitable Media | Water, sewage, oil, weak corrosive fluids, acids, alkalis, and chemical solutions |
Leakage Class | Zero Leakage (Bubble-tight) per API 598 / ISO 5208 Class A |
Flow Direction | Uni-directional |
Opening Pressure | < 0.2 bar |
Pressure / Temperature Ratings
Typical shell and seal test pressures at various pressure ratings are detailed in the table below. Please ensure operating conditions align with the pressure-temperature rating standards.
Nominal Pressure (PN) | Shell Test Pressure (Hydrostatic) | Seal Test Pressure |
PN10 (1.0 MPa) | 1.5 MPa | 1.1 MPa |
PN16 (1.6 MPa) | 2.4 MPa | 1.76 MPa |
PN25 (2.5 MPa) | 3.75 MPa | 2.75 MPa |
Class 150 | 1.5 x Rated Pressure | Per API 598 |
Typical Applications
GUATANTEE:
SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.
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