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China Brass Dual Check Valve Suppliers - Non-Return Spring Rubber Seal for Factory Use
Product Specification
| Product Name | Check Valve | Material | Brass |
| Type | Double disc | Medium | Water/Sea water |
| Size | DN50-DN1200 | Seal | Rubber |
| Power | Automatic | Standard | DIN/ANSI/GOST/JIS/BS |
Product Description
Check valves are crucial types of valves in industrial systems. Their primary function is to prevent the back - flow of media, ensuring the safe and stable operation of the system.
A common type is the swing check valve. It has a swingable disc. When the media flows in the forward direction, the disc is pushed open, allowing the media to pass through. However, when there is a tendency for the media to flow back, the disc quickly closes under the action of gravity and the reverse pressure of the media to prevent back - flow.
The double - disc check valve consists of two semi - circular discs. When the fluid flows forward, the discs open and the fluid passes smoothly. Once the fluid tries to flow in the reverse direction, the two discs close rapidly. This structure makes the double - disc check valve small in size, light in weight and easy to install.
Check valves are widely used in fields such as water supply and drainage, and petrochemical industry, safeguarding the normal operation of various systems.
Frequently Asked Questions
Q
What is the primary function of a check valve?
The primary function of a check valve is to prevent the backflow of media in industrial systems, ensuring the safe and stable operation of the entire system.
Q
What are the design advantages of a double-disc check valve?
The double-disc check valve features two semi-circular discs that close rapidly when fluid attempts to flow in reverse. This unique structure makes the valve small in size, light in weight, and very easy to install.
Q
What materials and size ranges are available for this check valve?
These check valves are constructed with a brass body and rubber seals. They are available in sizes ranging from DN50 to DN1200 to suit various pipeline dimensions.
Q
How does a swing check valve prevent media backflow?
When media flows forward, the swingable disc is pushed open. When the flow reverses, gravity and the backpressure of the media force the disc to close quickly, preventing backflow.
Q
What international standards do these check valves comply with?
Our check valves comply with major global standards, including DIN, ANSI, GOST, JIS, and BS, ensuring compatibility with diverse piping systems.
Q
In which industries are these check valves typically applied?
These valves are widely used in industrial sectors such as water supply and drainage systems, as well as the petrochemical industry, to safeguard standard operations.