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The Flange End Cast Iron Ball Valve features a robust valve body structure that effectively resists the erosion of common media such as water, oil, and gas. Zhongguan Valves employs a special hardening treatment on the ball core surface during production, significantly enhancing its wear resistance. This design not only extends the service life of the Flange End Cast Iron Ball Valve but also ensures stable switching torque under high-load conditions.
| Item | Details |
| Product Name | Flange End Cast Iron Ball Valve |
| Brand | Zhongguan Valve |
| Body Material | Cast Iron (GG25) / Ductile Iron (GGG40/50) |
| Size Range | DN50 - DN300 (2" - 12") |
| Pressure Rating | PN10 / PN16 / Class 125 |
| Flange Standard | DIN 2501 / ANSI B16.1 / BS 4504 |
| Ball Material | Stainless Steel (SS304/316) / Chrome Plated Iron |
| Seat Material | PTFE / R-PTFE |
| Working Temperature | -10°C to 120°C |
| Operation | Manual Lever / Gear Box / Actuator Mount |
Our Cast Iron Flange Type Ball Valve features a full-bore design with minimal flow resistance. The precision ball and PTFE seat ensure bidirectional sealing in both fully open and fully closed states, preventing media leakage, making it particularly suitable for applications requiring accurate flow regulation.
Flange interfaces conform to multiple international standards such as DIN, ANSI, and BS. This standardized design allows our Flange End Cast Iron Ball Valve to seamlessly integrate into existing piping systems, reducing on-site installation and commissioning time.
To further enhance corrosion resistance, the valve body surface is typically treated with epoxy resin electrostatic spraying. This protective layer effectively isolates the cast iron substrate from humid environments, ensuring the valve maintains excellent appearance and performance in underground pipe networks or outdoor environments.
Water Treatment and Water Supply & Drainage: Controlling the flow of raw water and purified water to ensure efficient operation of water treatment plants.
HVAC: Regulating circulating water flow in district heating or cooling systems.
Municipal Engineering: Used for low-pressure gas transmission and wastewater treatment facilities in urban areas.
General Industry: Basic isolation for various non-corrosive fluid pipelines.
Zhongguan Valve Manufacture Co., Ltd. boasts over 19 years of professional experience and has established a strategic layout with two major production bases in the north and south:
Supply Chain Integration Expert: We have successfully integrated the cast iron hydraulic valve supply chain in the north with the cast steel/stainless steel industrial valve supply chain in the south. Our northern base (Tianjin) focuses on in-depth expertise in cast iron materials, providing strong technical support for our Flange End Cast Iron Ball Valve.
Deep Industry Experience: Our core team consists of senior experts with over 20 years of experience. Since establishing our Zhejiang base in Yongjia, the "Hometown of Pumps and Valves," in 2019, we have further strengthened our technological R&D and overseas market service capabilities.
Comprehensive Product Line: In addition to the Flange End Cast Iron Ball Valve, we also offer a full range of products including butterfly valves, gate valves, check valves, and filters, providing customers with one-stop fluid control procurement solutions.
Stringent Quality Control Standards: We possess complete pressure testing equipment and precision installation production lines to ensure that every valve leaving the factory meets its design pressure rating.
Q: What is the difference between cast iron and ductile iron in ball valve applications? A: Cast iron (GG25) is more cost-effective and suitable for general low-pressure environments. Ductile iron (GGG40/50) has better toughness and tensile strength, suitable for pipeline systems with slightly higher pressure or some impact.
Q: Can this Flange End Cast Iron Ball Valve be equipped with an automated actuator? A: Yes. Our large-size valves typically come with an ISO 5211 standard top plate, allowing customers to easily install pneumatic or electric actuators as needed.
Q: How do you ensure the connection accuracy of large flanges? A: Our flange hole machining uses high-precision CNC machine tools and strictly follows international tolerance standards to ensure that bolt installation on site does not require forced alignment.
