Double Disc check valve be used in seawater
What are the considerations and challenges associated with seawater for double disc check valve?
If the fluid is seawater in the pipe, TVCCL advice is to use a dual plate full rubber type check valve
Dual plate full rubber type check valves can be used in seawater applications, but there are specific considerations and challenges associated with seawater exposure.
Causes of damage:
- Corrosion: Seawater is highly corrosive due to its salt content. Even though the body of valve is rubber-lined, other components, such as the hinge pin, springs, or the valve body itself must be made of corrosion-resistant material.
- Biofouling: Seawater contains a variety of marine organisms. Over time, these organisms can attach to the valve's surfaces, leading to biofouling. This can affect the operation and efficiency of dual plate wafer type check valve with full rubber.
- Sediment and Debris: Seawater can carry sediments and debris, that can become lodged in the valve and affect its operation.
- Material Selection: ⊛Ensure that all metal components of the valve, such as the body, hinge pin, and springs, are made of corrosion-resistant materials like aluminum bronze, bronze, or other marine-grade alloys. ⊛Choose a rubber lining that's specifically designed to withstand the corrosive effects of seawater.
- Regular Maintenance and Inspection: ⊛Inspect the valve periodically for signs of corrosion, biofouling, or rubber degradation. ⊛Clean the valve to remove marine growth and prevent biofouling. This may require manual cleaning or the use of an antifouling agent.
- Install Strainers: To prevent debris and larger sediments from affecting the valve, consider installing strainers or filters upstream of the valve.
- Protective Coatings: Consider using protective coatings on the valve's exterior surfaces to provide an additional layer of protection against corrosion and biofouling.
- Operational Checks: Periodically test the operation of the valve to ensure that it opens and closes properly. This can help in the early detection of any problems.
While dual plate full rubber type check valves can be used in seawater applications, it's important to select the right materials and ensure regular maintenance meet the challenges of seawater. With proper care and monitoring, these valves can operate efficiently in marine environments.
The full rubber wafer type dual plate check valve, as the name suggests, is a body inside the dual plates check valve that is fully rubber lined. The valve's interior is fully lined with rubber.
The rubber lining provides excellent corrosion protection, especially in applications involving seawater fluids or environments.
The rubber-lined design allows the valve to handle a wide range of fluids, from water to seawater, making it suitable for various applications.
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