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Home > Industrial Equipment & Components > Valve > Check Valve > GB/T1855 Standard Ductile Iron Valve With Swing Check Design, 200mm Size

GB/T1855 Standard Ductile Iron Valve With Swing Check Design, 200mm Size

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Product Spotlights

GB/T1855 standard 200mm ductile iron swing check valve ensures reliable backflow prevention with low flow resistance. Its robust ductile iron construction offers superior durability and impact resistance. Features versatile sealing options (NBR/EPDM/metal) for various media and easy flanged installation. Manufactured under ISO9001 by an exporter with global reach, providing a cost-effective and dependable solution for water, wastewater, and industrial pipelines.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Ductile Iron

Application:

Other, Water Supply

Size:

200mm (8 Inch)

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Other, Ductile Iron

Application Other, Water Supply

Size 200mm (8 Inch)

Design Standard GB/T1855

Design Type Swing Check

Connection Type Flanged End (Standard)

Pressure Rating PN10/PN16/PN25 (Customizable)

Seat Material Nitrile Rubber / EPDM / Metal (Optional)

Brand Zhibang Valve

Model Available upon request

As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance GB/T1855 Standard Ductile Iron Valve with Swing Check Design in a 200mm size. Engineered for reliability and durability in demanding fluid control applications, this valve is designed to prevent backflow and protect your pipeline systems effectively. With years of expertise since our establishment in 2016 and a strong export presence across global markets including North America, Europe, and Southeast Asia, we ensure every valve meets stringent quality standards for long-term, trouble-free operation.

Our 200mm Ductile Iron Swing Check Valve is a cornerstone for secure fluid management. The swing check design utilizes a disc that swings on a hinge or shaft. When flow moves in the forward direction, the disc is pushed open, allowing media to pass. When flow stops or reverses, the disc automatically swings closed onto the seat, preventing backflow. This simple yet effective mechanism minimizes pressure drop and water hammer, making it ideal for various industrial and municipal applications.

Key Features & Technical Advantages:

Superior Durability: The valve body is constructed from high-grade ductile iron, known for its excellent strength, impact resistance, and corrosion resistance compared to standard cast iron.
Reliable Backflow Prevention: The swing check design ensures positive sealing against reverse flow, safeguarding pumps and upstream equipment.
Low Flow Resistance: The full-port design and swinging disc create minimal obstruction to forward flow, optimizing system efficiency and reducing energy consumption.
Robust Construction: Designed and manufactured in compliance with the Chinese national standard GB/T1855, ensuring dimensional accuracy, performance reliability, and interchangeability.
Versatile Sealing Options: The valve seat can be fitted with different sealing materials like Nitrile Rubber (NBR) or EPDM for water applications, or metal seats for more abrasive media, offering customization based on service conditions.
Easy Installation & Maintenance: The flanged end connection facilitates straightforward installation into existing piping systems. The cover can often be removed without taking the valve out of the line for internal inspection or seat replacement.

Technical Specifications Table:

Parameter	Specification
Product Standard	GB/T1855
Nominal Size (DN)	200 mm (8")
Nominal Pressure (PN)	PN10, PN16, PN25 (Common Options)
Body Material	Ductile Iron (QT450-10)
Disc Material	Ductile Iron / Coated Ductile Iron
Seat Material	NBR, EPDM, Metal (Selectable)
Connection Type	Flanged (RF/FF as per GB standard)
Swing Check Type	Single Disc, Swing Type
Suitable Media	Water, Oil, Gas, Wastewater (Non-corrosive)
Operating Temperature	-10°C to +120°C (Depends on seat material)

Benefits for Your Operations:

System Protection: Effectively prevents reverse flow, protecting pumps, meters, and other sensitive equipment from damage.
Reduced Maintenance Costs: The durable ductile iron construction and reliable sealing extend service intervals and lower lifetime ownership costs.
Enhanced Safety: Automatic operation eliminates the need for manual intervention, reducing operational risks.
Broad Compatibility: Compliance with GB/T1855 standard ensures it fits seamlessly into many piping systems, particularly in markets familiar with Chinese standards.
Global Supply Confidence: Manufactured by a company with an annual export value of US$1-1.5 Million and serving diverse markets worldwide, ensuring product availability and consistent quality.

Shanghai Zhibang Valve backs this product with the trust earned from a global clientele across continents from North America to Oceania. Our ISO9001 certified manufacturing processes guarantee that every 200mm swing check valve is produced with precision and subjected to rigorous testing. We offer flexible shipment options from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery to support your project timelines. Choose Zhibang Valve for a robust, reliable, and cost-effective solution for your backflow prevention needs. Contact us today for detailed quotations, technical data sheets, or to discuss custom requirements for your specific application.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of a swing check valve over other types?
A: Swing check valves typically offer lower flow resistance in the open position compared to lift check valves, making them suitable for applications with relatively steady flow where minimizing pressure drop is important.
Q: Can this valve be installed in any orientation?
A: For optimal performance and to ensure proper disc closure, swing check valves are generally recommended for horizontal installation with the hinge pin horizontal. Vertical installation (flow upward) is possible but may require specific design considerations; please consult our technical team.
Q: Is the 200mm size suitable for high-pressure applications?
A: This valve is commonly available in pressure ratings like PN10, PN16, and PN25. The suitability for high-pressure service depends on the selected PN rating and the specific system conditions. Higher pressure classes may be available upon request.
Q: What sealing materials are available, and how do I choose?
A: Standard options include Nitrile Rubber (NBR) for general water and oil services, EPDM for hot water and mild chemicals, and metal seats for abrasive or high-temperature media. Selection depends on the fluid type, temperature, and presence of solids.
Q: Does the valve comply with international standards like API or ANSI?
A: This product is manufactured to the Chinese national standard GB/T1855. While it may share dimensional similarities with some ANSI classes, it is not certified to ANSI/API standards unless specifically ordered and confirmed. We can provide products to various standards upon request.
Q: What is the lead time for an order of this 200mm valve?
A: Lead time varies based on order quantity and specific configuration (like seat material). As a manufacturer with established production, we typically maintain stock for common specifications and can provide accurate lead times upon receiving your inquiry.
Q: Are spare parts like the disc or seat ring available for purchase separately?
A: Yes, as the manufacturer, we supply genuine spare parts to ensure proper fit and performance. It is recommended to use original Zhibang Valve spare parts for maintenance.
Q: Can you provide custom coatings or external finishes for corrosion protection?
A: Customizable options such as epoxy coating, galvanization, or other surface treatments are available to enhance corrosion resistance for specific environmental conditions. Please discuss your requirements with our sales team.