0102030405
Ductile Iron Dual Check Valve with Double Disc Design - Reliable Suppliers from China Factory
Product Specification
| Product Name | Check Valve | Material | Ductile Iron/Stainless Steel |
| Type | Double disc | Medium | Water/Sea water |
| Size | DN50-DN1200 | Seal | EPDM/NBR rubber |
| Power | Automatic | Standard | DIN/ANSI/GOST/JIS/BS |
Product Description
As a key fluid control device, the core function of a check valve is to ensure that the fluid can only flow in one direction.
The lift check valve is a common type. The disc moves up and down perpendicular to the direction of fluid flow. When the fluid flows forward, the disc is lifted up, enabling the fluid to pass. When the fluid flows in the reverse direction, the disc drops to close the passage under its own gravity.
The pilot - operated check valve uses a pilot system to control the opening and closing of the main disc. It can respond quickly under a small pressure difference to effectively control the fluid. This type of check valve is widely used in some occasions with high requirements for control accuracy.
Thanks to their unique functions, check valves play an indispensable role in many industrial processes, effectively avoiding various problems caused by fluid back - flow.
Frequently Asked Questions
What is the primary function of a check valve?
The core function of a check valve is to ensure that the fluid flows only in a single direction, which effectively prevents issues caused by fluid back-flow in piping systems.
How does a lift check valve operate?
In a lift check valve, the disc moves vertically (perpendicular to the fluid flow). Forward fluid pressure lifts the disc to open the passage, while reverse flow allows the disc to drop under its own gravity, closing the valve.
What are the benefits of a pilot-operated check valve?
A pilot-operated check valve uses an auxiliary pilot system to control the main disc. This design allows it to respond rapidly even under very small pressure differences, making it ideal for systems requiring high control accuracy.
What materials and seal types are available for these check valves?
These check valves are constructed from Ductile Iron or Stainless Steel. They feature high-quality EPDM or NBR rubber seals to ensure reliable performance with water and seawater mediums.
Which standards do these check valves conform to?
Our check valves are manufactured to meet major global standards, including DIN, ANSI, GOST, JIS, and BS, ensuring compatibility with international piping configurations.