Large diameter check valve

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Large diameter check valve

Large diameter check valve

Type：HH47X
Subtitle：Large Bore Non-Return Valve
The Large Diameter Check Valve is a high-performance, butterfly-style non-return valve designed for large-scale piping systems requiring reliable flow control and water hammer prevention. Suitable for water supply, wastewater treatment, power generation, and industrial processes, this valve prevents reverse flow and protects pipelines and equipment from damage caused by backflow or pressure surges. Available in sizes ranging from DN300 to DN2600 (12" to 104"), this valve is constructed from durable materials such as ductile iron, carbon steel, or stainless steel, ensuring long-term performance in demanding environments. Its butterfly disc design minimizes pressure drop and provides efficient, low-maintenance operation.
标签：水锤止回阀
类别：蝶式止回阀
工作条件发电厂, 污水处理厂, 水厂
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球阀
电动球阀
气动球阀
手动球阀
高压球阀
四通球阀
三通球阀
螺纹球阀
低温球阀
顶部入口球阀
焊接球阀
蝶阀
电动蝶阀
气动蝶阀
手动蝶阀
硬密封蝶阀
软密封蝶阀
高性能蝶阀
片式蝶阀
止回阀
轴流式止回阀
蝶式止回阀
旋启式止回阀
对夹式止回阀
水止回阀
倒流防止器
控制阀
电动控制阀
气动控制阀
自力式控制阀
锻钢阀门
锻钢闸阀
锻钢截止阀
锻钢止回阀
闸阀
平板闸阀
刀闸阀
软密封闸阀
楔式闸阀
截止阀
角式截止阀
直通式截止阀
水控制阀
排气阀
流量控制阀
液压控制阀
水压调节阀
污泥排放阀
螺纹阀
螺纹球阀
其他螺纹阀

产品概览

The Large Diameter Check Valve is a high-performance, butterfly-style non-return valve designed for large-scale piping systems requiring reliable flow control and water hammer prevention. Suitable for water supply, wastewater treatment, power generation, and industrial processes, this valve prevents reverse flow and protects pipelines and equipment from damage caused by backflow or pressure surges.

Available in sizes ranging from DN300 to DN2600 (12" to 104"), this valve is constructed from durable materials such as ductile iron, carbon steel, or stainless steel, ensuring long-term performance in demanding environments. Its butterfly disc design minimizes pressure drop and provides efficient, low-maintenance operation.

应用

Water Supply Networks: Installed at pump discharge points in municipal water systems and reservoirs.

Wastewater Treatment: Used in effluent discharge and sludge handling systems.

发电： Protects cooling water circuits and condensate recovery systems in power plants.

Industrial Pipelines: Suitable for large-scale process water, oil, and gas systems.

Product Features

Butterfly Disc Design:Large-diameter disc ensures low resistance flow with a flow coefficient (Cv) of 0.1-0.6.Suitable for high-flow systems such as water supply and wastewater treatment plants.

耐用的结构Body materials: Ductile iron (EN-GJS-400-18), Carbon steel (ASTM A216 WCB), or Stainless steel (ASTM A351 CF8M).Internals: Stainless steel disc and spring for corrosion resistance and long service life.

Reliable Sealing:Metal-to-Metal Seals: Suitable for high-temperature and high-pressure applications.Rubber Seals: Provides zero leakage in water and wastewater systems.

Low Maintenance:Self-cleaning design and corrosion-resistant materials reduce downtime and maintenance costs.

遵守规定：Meets international standards such as AWWA C508, EN 1074, and ISO 5208.

运行优势

Water Hammer Prevention: Slow-closing mechanism reduces pressure surges and protects pipelines.

Energy Efficiency: Low resistance flow minimizes pump energy consumption.

多功能性： Suitable for horizontal or vertical installation (flow upwards).

Ease of Installation: Flanged connections simplify integration into existing systems.

与标准止回阀的比较

特点Large Diameter Check Valve标准止回阀
流量High (Cv ≥10,000 for DN1000)Moderate (Cv ≤5,000 for DN1000)
Water Hammer ControlExcellent (slow-closing mechanism)Limited (may cause water hammer)
应用Large-scale water supply, power generationGeneral industrial systems
成本效益前期成本较高，生命周期成本较低Lower upfront cost

中型
水

工作条件

发电厂, 污水处理厂, 水厂

总结

The Large Diameter Check Valve is a reliable, high-performance solution for preventing reverse flow and mitigating water hammer in large-scale piping systems. Its butterfly disc design, durable construction, and compliance with international standards make it an ideal choice for water supply networks, wastewater treatment plants, and industrial systems. By combining energy efficiency with reliable performance, this valve ensures the safety and longevity of critical infrastructure.

产品参数

尺寸范围 DN300 to DN2600 (12" to 104")
压力等级 PN10 to PN25 (EN 1092) or Class 150 to Class 300 (ASME B16.34)
温度范围 -10°C to 120°C (EPDM seals) / -20°C to 80°C (NBR seals)
车身材料 Ductile Iron (EN-GJS-400-18), Carbon Steel (WCB), Stainless Steel (CF8M)
圆盘材料 Ductile Iron (EN-GJS-400-18), Carbon Steel (WCB), Stainless Steel (CF8M)
座椅材料 EPDM, NBR, or PTFE for zero leakage
末端连接 Flanged (EN 1092, ASME B16.5)

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