Large Diameter Check Valve

Large-diameter check valves are large-diameter, silent check valves. They feature a hydraulically compliant profile design for optimal streamlined water flow, and an internal backflow prevention design ensures minimal pressure loss in the pipeline. Large-diameter check valves are typically installed at the outlet of large water pumps, quickly closing before backflow occurs to prevent water hammer, water surge noise, and destructive impacts, thus achieving the goals of quiet operation, preventing backflow, and protecting equipment.

GNEE Group's large-diameter check valves are widely used in large-scale water supply and drainage, fire protection, HVAC, and industrial systems. Global Valve Solutions – Contact Our Experts Now!‌

Large-diameter check valves Technical parameters

Material: Carbon steel, Stainless Steel (SS304, SS316)

Size Range:10″ to 60″ (DN 250 to DN 1500)

Connection Options:Flange

Working Pressure: Class 150 to Class 600

Working Temperature:-29°C to 454°C

Sealing Options:PTFE, Graphite

Manufacturing Method:Forging, Carbon steel

Applicable Medium:Oil, Gas, Water

Manufacturing Standard:ANSI, ASME, GB

Structural Features of Large-Diameter Check Valves:

1. Short structural length: Only 1/4 to 1/8 of the length of traditional flanged large-diameter check valves.

2. Small size and light weight: Only 1/4 to 1/20 of the weight of traditional flanged large-diameter check valves.

3. Quick valve closure and low water hammer pressure.

4. Suitable for both horizontal and vertical pipelines, easy installation.

5. Unobstructed flow path and low fluid resistance.

6. Sensitive operation and good sealing performance.

7. Short valve stroke and low closing impact force.

8. Simple and compact overall structure and aesthetically pleasing design.

9. Long service life and reliable performance.

Main external dimensions of large-diameter check valve

Large-diameter check valves are widely used in the following fields:

1. Municipal drainage systems: Used in sewage treatment plants, rainwater drainage systems, etc., to prevent sewage or rainwater backflow, ensuring environmental sanitation and smooth urban drainage.

2. Industrial pipelines: Used in pipeline systems of industrial facilities such as chemical plants, power plants, and steel plants to control the unidirectional flow of media and protect equipment and pipelines from backflow.

3. Hydraulic Engineering: In water conservancy and hydropower projects, large-diameter check valves are widely used in reservoirs, pumping stations, and other facilities to prevent backflow or pressure loss, protecting the safe operation of water conservancy facilities.

4. Marine Engineering: Used for fluid control and protection in marine environments, such as subsea pipelines and offshore platforms.

Main Advantages of Large-Diameter Check Valves:

- Sealing Performance: The valve disc design ensures effective closure under low back pressure, preventing media backflow and guaranteeing the sealing performance of the pipeline system.

- Corrosion Resistance: Manufactured using corrosion-resistant materials, adaptable to the long-term use requirements of various corrosive media.

- Structural Stability: Robust valve body structure and reliable connection methods ensure long-term stable operation of the valve, reducing maintenance frequency and costs.

- High Adaptability: Capable of adapting to the needs of large-diameter pipeline systems, providing reliable fluid control and safety protection.

Large-diameter check valves factory

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