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Help CenterCast Iron Flange Swing Check Valve With Technical Support For Municipal Pipeline
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Shanghai Zhibang Valve Manufacture Co., Ltd. (established 2016) proudly presents our Cast Iron Flange Swing Check Valve – a reliable solution designed specifically for municipal pipeline systems. With a strong annual export value of US$1–1.5 million and ISO9001 certification, we ensure every valve meets rigorous quality standards. This check valve prevents backflow efficiently, reduces water hammer, and offers long service life in water supply, drainage, and sewage applications. Our technical support team provides comprehensive assistance from selection to installation, making it a trusted choice for municipal projects worldwide.
Key Features & Technical Specifications
- Durable Cast Iron Body: High tensile strength, corrosion-resistant, suitable for underground and above-ground installations.
- Flanged Connections: Easy to install, maintain, and align with standard pipe flanges (EN 1092-2, ISO 7005-2).
- Automatic Swing Disc: Opens with forward flow, closes quickly to prevent backflow – minimal pressure loss.
- Hinge Pin Design: Reduces wear and extends valve life, even in demanding conditions.
- Wide Size Range: DN50 to DN600, covering most municipal pipeline diameters.
- Pressure Ratings: PN10 and PN16 available, standard for water distribution systems.
- Temperature Range: -10°C to 120°C, suitable for cold and warm water networks.
- Customizable Options: Colors, special coatings, and extended spindles available on request.
| Parameter | Specification |
|---|---|
| Material | Cast Iron (GG25) |
| Connection | Flanged, RF or FF face |
| Nominal Diameter | DN50 – DN600 (2” – 24”) |
| Pressure Rating | PN10 / PN16 |
| Operating Temperature | -10°C to +120°C |
| Applicable Medium | Water, sewage, non-aggressive fluids |
| Design Standard | GB/T 12236, API 6D (optional) |
| Certification | ISO9001:2015 |
Advantages for Municipal Pipeline Systems
Our cast iron swing check valve provides zero backflow protection, critical for maintaining water quality and system integrity. The flanged design simplifies installation in existing pipelines, and the lightweight yet robust cast iron body reduces support costs. With a low cracking pressure, the valve opens easily even under low flow conditions, ensuring energy efficiency. The hinge pin is replaceable, allowing easy maintenance without removing the entire valve from the pipeline. Additionally, the valve can be supplied with a spring-loaded disc for horizontal or vertical installation, depending on project requirements.
We understand that municipal projects demand reliability and long-term performance. Each valve undergoes hydrostatic testing at 1.5 times the rated pressure, and shell tests at 1.1 times the rated pressure, ensuring zero leakage. Our technical support team can assist with sizing, material selection, and installation guidance – all backed by ISO9001 quality management system.
Trust & After-Sales Support
Shanghai Zhibang Valve Manufacture Co., Ltd. has been a dedicated manufacturer since 2016, exporting to North America, South America, Europe, Africa, Oceania, and Asia. With an annual export value exceeding US$1 million, we have established a strong reputation for quality and on-time delivery. Our products are shipped from Shanghai, Guangzhou, Hong Kong, and Beijing ports, with flexible logistics to meet your schedule. Every valve comes with a standard warranty, and our after-sales team is ready to provide technical support, spare parts, and troubleshooting assistance. Choose our cast iron flange swing check valve for your municipal pipeline projects – you benefit from a reliable product, professional service, and a partner committed to your success.
Frequently Asked Questions
1. What is the typical lifespan of this cast iron swing check valve?
Under normal municipal water conditions, the valve can last 15–20 years with proper maintenance. The cast iron body resists corrosion, and the swing disc seat can be replaced if worn.
2. Can this valve be installed vertically?
Yes, the standard design works in horizontal pipelines. For vertical installations, we recommend a spring-loaded disc option (available upon request).
3. What is the maximum pressure rating?
Standard ratings are PN10 and PN16. Higher pressure ratings (PN25) can be manufactured on request.
4. Do you provide certificates of material and test reports?
Yes, we provide material certificates (EN 10204 3.1) and hydrostatic test reports with each order. ISO9001 certification is also available.
5. How do you prevent water hammer in the system?
The swing check valve design minimizes water hammer by closing quickly when flow reverses. For larger diameters, we can add a lever and weight to control closing speed.
6. What is the delivery time for standard sizes?
For sizes DN50–DN300, stock is often available, delivery within 15–20 days. Larger sizes may require 25–35 days, depending on quantity.
7. Can I get a sample before bulk order?
Yes, we accept sample orders. The sample cost is negotiable, and shipping charges apply. We can provide a sample with the same quality as mass production.
8. Do you support customization for special media like seawater?
Yes, we can supply internal epoxy coating or use ductile iron material for corrosive environments. Please contact our technical team for specific requirements.
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