Lug Type Check Valve
Lug-Type Dual Disc Wafer Check Valve
The Lug-Type Dual Disc Wafer Check Valve is a compact and powerful check valve specially designed for piping systems that require low pressure drop and rapid response. The double disc (removable disc) is designed for quick shutdown to prevent water impact, and the bolt structure can be easily installed between flanges without the need for additional bolt connections.
The valve adopts C5-H marine coating conforming to ISO12944, which has excellent corrosion resistance under harsh salt water and high humidity conditions, ensuring the long-term reliability of nuclear offshore operations.
Key Features & Benefits
|
Feature |
Advantage |
|
Dual Disc (Split Disc) Design |
Rapid closure minimizes water hammer and backflow. |
|
Lug-Type Wafer Body |
No separate bolts needed-direct installation between ANSI/DIN/JIS flanges. |
|
Compact & Lightweight |
Ideal for space-constrained piping systems. |
|
Low Pressure Drop |
Optimized flow path reduces energy loss. |
|
Bubble-Tight Sealing |
Soft seat (EPDM/NBR) or metal-seated options available. |
|
Low Maintenance |
No external hinges or springs, reducing wear. |
Technical Specifications
Size & Materials & Corrosion Protection
Size Range: 2" – 24" (DN50 – DN600)
Pressure Rating: PN10 – PN40 / Class 150 – 300
Temperature Range: -20°C to +180°C (varies by seat material)
Body Materials: Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel (SS304/SS316)
Disc Materials: Stainless Steel, Aluminum Bronze
Seat Options: EPDM, NBR, PTFE (for chemical resistance) or metal-seated (for high-temp)
Coating: C5-H Marine-Grade Coating (ISO 12944) for offshore & splash zone durability
Standards & Certifications
Design Standards: API 594, ASME B16.34
Flange Compatibility: ANSI, DIN, JIS, BS
Corrosion Protection: ISO 12944 C5-H (High-corrosion marine environments)
Why Choose This Valve for Offshore Applications?
✔ Marine-Grade
Protection – C5-H coating ensures resistance to saltwater, UV exposure, and
extreme weather.
✔ Reliable
Backflow Prevention – Critical for offshore drilling, seawater cooling, and
ballast systems.
✔ Easy
Installation & Maintenance – Lug design allows quick removal without
dismantling pipelines.
✔ Versatile
Material Options – Stainless steel & epoxy-coated bodies for extended
service in aggressive environments.
Applications
· Offshore Oil & Gas Platforms (drilling, piping, seawater injection)
· Shipbuilding & Marine Systems (ballast, bilge, cooling systems)
· Coastal Power Plants & Desalination Facilities
· Chemical Tankers & LNG Carriers
· Subsea & Splash Zone Installations
Conclusion
Designed specifically for extreme marine environments, the full-lug check valve features an ISO12944C5-H coating and offers unparalleled corrosion resistance and reliability in offshore and coastal applications. Its robust structure, easy installation and low maintenance make it ideal for oil rigs, ships and seawater systems.
Please consult for customized solutions for environments with high corrosion!
