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Home > Industrial Equipment & Components > Valve > Check Valve > GB/T1855 Valve for Water Supply and Fire Protection Pipelines, Ductile Iron Construction

GB/T1855 Valve for Water Supply and Fire Protection Pipelines, Ductile Iron Construction

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Product Spotlights

GB/T1855 compliant ductile iron valves for water supply and fire protection. Features high strength, corrosion resistance, and reliable sealing. Available in gate, check, and butterfly types with sizes from DN50-DN600 and pressure ratings up to PN25. ISO9001 certified manufacturing ensures quality. Customizable connections, coatings, and actuation options available for global project needs.

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 and Fire Protection Pipelines

Applicable Standard:

GB/T1855

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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
Company Profile
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Material Other, Ductile Iron

Application Other, Water Supply and Fire Protection Pipelines

Applicable Standard GB/T1855

Connection Type Flanged, Threaded (Optional)

Pressure Rating PN10, PN16, PN25 (Customizable)

Size Range DN50 to DN600

Type Gate Valve, Check Valve, Butterfly Valve (Available)

Seat Material Rubber, Metal (Optional)

Coating/Finish Epoxy Coated, Galvanized (Optional)

Operation Manual, Gear Operated, Electric Actuator (Optional)

As a professional manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance GB/T1855 Valve for Water Supply and Fire Protection Pipelines. Engineered with robust ductile iron construction, this valve series is designed to deliver reliable, long-lasting service in critical fluid control applications. We understand the paramount importance of safety and dependability in municipal water networks and fire safety systems, which is why our valves are meticulously manufactured to meet stringent national standards, ensuring they perform flawlessly under demanding conditions.

Our valves offer a comprehensive solution for engineers and project managers seeking durable and compliant components. The core value lies in their exceptional strength, corrosion resistance, and consistent sealing performance, which directly translate to reduced maintenance costs, enhanced system integrity, and uninterrupted service for end-users. With nearly a decade of experience since our establishment in 2016 and a strong export presence across global markets, we have refined our production to meet diverse international project requirements.

Key Features & Technical Advantages:

Superior Material Strength: The use of ductile iron (nodular cast iron) provides an excellent balance of high tensile strength, good impact resistance, and durability, far surpassing ordinary cast iron. This material choice ensures the valve body can withstand high pipeline pressures and potential water hammer effects.
Standard Compliance & Reliability: Manufactured in strict accordance with the GB/T1855 standard, these valves guarantee dimensional accuracy, performance consistency, and interchangeability, which is crucial for large-scale infrastructure projects and system maintenance.
Excellent Corrosion & Wear Resistance: Ductile iron inherently offers better corrosion resistance than standard cast iron. Optional epoxy coatings or galvanized finishes provide an additional protective layer for harsh environments, extending service life significantly.
Versatile Design & Configurations: The product series includes various valve types such as gate valves for on/off control, check valves for preventing backflow, and butterfly valves for regulation. This allows for a tailored solution for different points within the water supply and fire protection network.
Reliable Sealing Performance: Depending on the model and pressure rating, seats are available in resilient materials like EPDM or NBR rubber for tight shut-off, or metal-to-metal for higher temperature/pressure applications. This ensures zero leakage and system efficiency.
Flexible Operation & Automation Readiness: Valves are supplied with standard handwheel operation. They are also designed for easy integration with gear operators for larger sizes or electric/pneumatic actuators, enabling remote control and integration into SCADA systems for modern infrastructure.

Detailed Technical Specifications:

Parameter	Specification / Option
Primary Material	Ductile Iron (GGG-40/50)
Design Standard	GB/T1855
Nominal Pressure (PN)	PN10, PN16, PN25 (Custom higher ratings available)
Size Range (DN)	DN50, DN65, DN80, DN100, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600
Connection Types	Flanged (GB/T17241), Threaded (BSPT/NPT) upon request
Seat Material Options	EPDM Rubber, NBR Rubber, Metal (Stainless Steel)
Temperature Range	-10°C to 120°C (depending on seat material)
Coating/Finish	Red Oxide Primer, Epoxy Powder Coating, Hot-Dip Galvanized
Operation Methods	Manual Handwheel, Gear Operator, Electric Actuator, Pneumatic Actuator

Benefits to Our Clients:

Project Compliance & Smooth Approval: Using GB/T1855 standard valves simplifies the specification and approval process for projects within relevant regulatory frameworks, saving valuable time.
Long-Term Cost Efficiency: The durability and low maintenance requirements of ductile iron valves lead to a lower total cost of ownership over the system's lifespan.
Enhanced System Safety: Reliable performance in fire protection systems is non-negotiable. Our valves ensure immediate and fail-safe operation when needed, protecting property and lives.
Supply Chain Flexibility: With annual export values between US$1-1.5 million and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing), we have the experience and logistics capability to deliver orders reliably to your destination.
Global Application Suitability: Having supplied to markets across North and South America, Europe, Asia, Africa, and Oceania, our products are proven in varied climatic and operational conditions.

Shanghai Zhibang's commitment to quality is underpinned by our ISO9001 certification, ensuring every valve undergoes rigorous checks from raw material to finished product. Our established presence since 2016 and consistent export performance to a wide range of international markets are a testament to the reliability and acceptance of our products. When you choose our GB/T1855 Ductile Iron Valves, you are not just purchasing a component; you are investing in the resilience and safety of your water or fire protection infrastructure. We encourage you to contact us with your specific project requirements—be it size, pressure rating, or actuation needs. Our technical team is ready to provide detailed specifications and support to ensure you get the perfect valve solution for your application.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of using ductile iron over gray cast iron for these valves?
A: Ductile iron offers significantly higher tensile strength, better impact resistance, and improved elongation properties. This makes the valve more durable, resistant to cracking under stress or water hammer, and suitable for higher pressure applications, providing greater long-term reliability.
Q: Are your GB/T1855 valves compatible with piping systems following other international standards like ANSI or DIN?
A: While designed and tested to GB/T1855, the flanged dimensions often correspond closely to common international standards like ANSI B16.1 (Class 125/250) or DIN. It is crucial to provide your specific flange standard and pressure class requirements so we can confirm compatibility or supply accordingly.
Q: Can these valves be used for other fluids besides water?
A: Primarily designed for water, they can be suitable for other neutral fluids like air or certain oils. However, compatibility depends on the fluid's chemical properties, temperature, and the selected seat/seal materials. Please consult our technical team with your fluid details for a definitive recommendation.
Q: Do you offer fire-tested certifications for valves used in fire protection systems?
A: We manufacture valves to the GB/T1855 standard which covers requirements for water supply and fire protection. For specific fire test certifications (like UL/FM), please inquire as these are optional and available based on project specifications and order quantities.
Q: What is the typical lead time for an order of these valves?
A: Lead times vary based on the valve type, size, configuration (like actuation), and order quantity. Standard models in common sizes often have shorter lead times. We provide estimated lead times upon receipt of your detailed inquiry and can leverage our multiple shipping ports for efficient dispatch.
Q: Is customization available for special port connections or pressure ratings?
A: Yes, we offer customization services. This can include special flange faces, threaded ends (BSPT, NPT), higher pressure ratings beyond standard PN25, or unique coating specifications. Please share your detailed requirements for a feasibility assessment and quotation.
Q: How do I select between a gate valve and a butterfly valve for my application?
A: Gate valves are typically used for full open/close service where minimal pressure drop is critical. Butterfly valves are often used for both isolation and throttling, and they are more compact, especially in larger sizes. Our sales engineers can help you select the most suitable type based on your system's function, space constraints, and flow control needs.
Q: What kind of warranty or after-sales support do you provide?
A: Our products come with a standard warranty against material and manufacturing defects. We provide technical documentation, installation guides, and responsive after-sales support. Our extensive experience in exporting globally means we understand the importance of reliable support for our international clients.