Brass Dual Check Valve Non-Return Spring Rubber Seal - Reliable China Suppliers & Factory for HVAC and Water Supply Solutions
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.
Frequently Asked Questions
What is the primary function of a check valve?
The primary function of a check valve is to prevent the back-flow of media, ensuring the safe and stable operation of the industrial system.
How does a swing check valve prevent back-flow?
A swing check valve features a swingable disc. When media flows forward, the disc is pushed open. When reverse flow occurs, gravity and the reverse pressure of the media force the disc to close quickly, blocking the back-flow.
What are the advantages of a double-disc check valve?
A double-disc check valve consists of two semi-circular discs that close rapidly when fluid attempts to flow backward. This unique structure makes the valve small in size, lightweight, and easy to install.
What materials and seal types are used for these check valves?
These check valves are constructed from brass and feature a rubber seal, ensuring reliable performance in water and sea water applications.
Which industries and standards do these check valves support?
They are widely used in water supply, drainage, and the petrochemical industry. They support major global standards including DIN, ANSI, GOST, JIS, and BS.