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China High-Pressure LCC Swing Check Valve Factory - Full Bore Design for Reliable Performance by Leading Suppliers
Products Specification
| Type | Swing Check Valve |
| Size | 16” |
| Pressure | 600LB |
| Connection | Flange End |
| Operation | / |
| Body Material | LCC |
| Design Standard | API6D |
| FTF Dimension Standard | ASME B16.10 |
| Flange Dimension Standard | ASME B16.5 |
| Test Standard | API598 |
| Application | W.O.G |
Features
1Simple Design
Swing check valves have a simple design, consisting of a disc (or flapper) that swings on a hinge or shaft. The disc moves freely within the valve body to open or close the flow passage.
2One-Way Flow
These valves are designed to permit flow in one direction and automatically prevent backflow (reverse flow) when the fluid flow stops or reverses. This is achieved by the swinging action of the disc, which closes against the valve seat when backflow occurs.
3Gravity and Flow-Operated
The operation of swing check valves relies on gravity and the flow of the fluid. When fluid flows in the correct direction, it pushes the disc away from the seat, allowing flow. If the flow stops or reverses, gravity and the pressure of the returning fluid cause the disc to swing back and seal against the seat, preventing backflow.
4Low Pressure Drop
Swing check valves typically have a relatively low pressure drop because the disc is fully out of the flow path when the valve is open, allowing for smooth and unrestricted flow.
5Full Bore Design
Many swing check valves feature a full bore design, meaning the internal diameter of the valve is the same as the pipe it is connected to. This minimizes flow resistance and pressure loss.
6Available in Various Materials
Swing check valves are available in a wide range of materials, including cast iron, stainless steel, bronze, PVC, and other alloys. This variety allows them to be used with different types of fluids, including corrosive, abrasive, or high-temperature media.
7Silent Operation
Properly designed and installed swing check valves operate quietly, with minimal noise during the opening and closing of the disc.
8Installation Flexibility
Swing check valves can be installed in horizontal or vertical piping systems. However, in vertical installations, they are typically used in upward flow applications to ensure proper functioning.
9Maintenance and Durability
The simple construction of swing check valves makes them easy to maintain and repair. The disc and seat are the main components that may require attention. The durability of the valve depends on the materials used and the operating conditions.
10Applications in Low to Medium Pressure Systems
Swing check valves are commonly used in low to medium pressure systems. They are less suitable for high-pressure applications due to the potential for water hammer and pressure surges.
11Various Types of Discs
The discs in swing check valves can come in various designs, including flat, domed, or cushioned. Cushioned discs can reduce noise and wear during valve operation.
12Resistance to Water Hammer
Some swing check valves are designed to minimize water hammer, a phenomenon that occurs when fluid flow suddenly stops, causing a pressure surge. This can be achieved through slow-closing mechanisms or cushioned discs.
13Bi-Directional Sealing Capability*
While swing check valves are primarily designed to prevent reverse flow, they can also seal effectively in the forward direction, providing some level of protection against backflow even in fluctuating pressure conditions.
Application
✓Water Supply & Distribution
Used to prevent backflow, ensuring that water flows only in the intended direction. This is important for maintaining water quality and preventing contamination.
✓Wastewater Treatment
Used to prevent the backflow of treated water, sludge, or other fluids. They help protect equipment and maintain proper flow direction in sewage and drainage systems.
✓Pumping Systems
Commonly installed to prevent the reverse flow of fluid when pumps are shut off. This protects pumps from damage and prevents water hammer.
✓Fire Protection Systems
Ensures water or firefighting foam flows only towards the fire suppression equipment, preventing system failure.
✓Oil and Gas Industry
Prevents backflow in pipelines, refineries, and processing plants. Suitable for crude oil, refined products, natural gas, and hydrocarbons.
✓Chemical & Petrochemical
Prevents the backflow of chemicals, acids, and other hazardous fluids to maintain safe and efficient operation.
✓HVAC Systems
Prevents the backflow of water, refrigerants, and other fluids to maintain system efficiency and prevent equipment damage.
✓Power Generation
Used in cooling water systems, steam systems, and fuel lines to protect boilers, turbines, and condensers.
✓Marine Applications
Used on ships and offshore platforms to prevent the backflow of seawater, fuel, and other fluids.
✓Agriculture & Irrigation
Prevents backflow of water, fertilizers, and chemicals to protect water sources from contamination.
✓Pharmaceutical & Food
Maintains sanitary conditions and prevents the backflow of process fluids in hygienic operations.
✓Mining & Mineral Processing
Prevents the backflow of slurries, abrasive materials, and other process fluids to protect pumps and equipment.
✓Compressed Air Systems
Prevents the backflow of air, protecting compressors and related equipment from potential damage.
✓Cryogenic Applications
Handles extremely low-temperature fluids, such as liquid nitrogen or liquid oxygen, preventing dangerous reverse flows.
Technical Drawing
Frequently Asked Questions (FAQ)
What are the specifications of this swing check valve?
This swing check valve is 16 inches in size, with a pressure rating of 600LB. It features flange end connections, a body made of LCC (Low Temp Carbon Steel) material, and complies with the API6D design standard.
Which industry standards does this valve conform to?
The valve meets several industry standards: API6D for design, ASME B16.10 for face-to-face (FTF) dimensions, ASME B16.5 for flange dimensions, and API598 for testing.
Can this swing check valve be installed vertically?
Yes, swing check valves offer installation flexibility and can be installed in both horizontal and vertical piping systems. However, for vertical configurations, they should be used in upward flow applications to ensure proper operation under gravity.
How does a swing check valve prevent backflow?
It operates automatically using fluid flow and gravity. When fluid flows in the forward direction, it pushes the disc open. When the flow stops or reverses, gravity and the backpressure force the disc to swing back onto the seat, sealing the valve and preventing reverse flow.
Is this valve suitable for high-pressure systems?
While this specific valve is rated for 600LB, swing check valves are generally most suitable for low to medium pressure systems. In very high-pressure systems, care must be taken to mitigate the risks of water hammer and pressure surges.
What are the main advantages of using LCC material for the valve body?
LCC (Low Carbon Steel) is specifically formulated for low-temperature service. It provides excellent durability, strength, and impact resistance in demanding environmental conditions, making it suitable for W.O.G (Water, Oil, Gas) applications.