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Help CenterCBT4303 Butterfly Non-return Valve, Standard Spare Parts Available
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As a leading valve manufacturer based in Shanghai, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance CBT4303 Butterfly Non-return Valve. Established in 2016, we have dedicated ourselves to engineering reliable flow control solutions for a global clientele across diverse markets from North America and Europe to Southeast Asia and Africa. This valve is engineered to prevent backflow and protect your piping systems with dependable, maintenance-friendly operation. With an annual export value reflecting our commitment to quality and service, we offer this valve as a cornerstone component for efficient and safe fluid handling.
The CBT4303 Butterfly Non-return Valve, also known as a butterfly check valve, combines the compact design of a butterfly valve with the automatic, fail-safe function of a check valve. It is designed for installation between flanges, offering significant space and weight savings compared to traditional swing check valves. Its primary function is to allow fluid to flow in one direction while automatically preventing reverse flow (backflow), which is crucial for protecting pumps, compressors, and other equipment from damage.
Key Features and Technical Advantages:
- Dual-Function Design: Integrates the shut-off capability of a butterfly valve with the check function, simplifying system design and reducing the need for multiple valve installations.
- Low Pressure Drop: The disc design and flow path are optimized to minimize turbulence and pressure loss across the valve, contributing to energy efficiency in pumping systems.
- Quick Response: The lightweight disc responds rapidly to flow changes, closing swiftly when forward flow ceases to prevent water hammer and reverse flow effectively.
- Bidirectional Sealing (Optional): Certain configurations can provide sealing in both flow directions, offering enhanced protection in complex systems.
- Compact and Lightweight: Its wafer-style design requires minimal installation space and reduces structural support needs compared to bulky conventional check valves.
- Easy Maintenance: The valve is designed for in-line serviceability in many cases. A key selling point is the availability of standard spare parts, including discs, seats, seals, and shafts, which minimizes downtime during maintenance.
Technical Specifications Table:
| Parameter | Specification / Option |
| Model | CBT4303 |
| Valve Type | Butterfly Non-return / Check Valve |
| Size Range (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1200 |
| Pressure Rating (PN) | PN10, PN16, PN25 |
| Body Material | Ductile Iron (Standard), Cast Iron, Carbon Steel, Stainless Steel (304/316) |
| Disc Material | Ductile Iron with Epoxy Coating, Stainless Steel, Aluminum Bronze |
| Seat Material | EPDM (Water, -20°C to 120°C), NBR (Oil, -20°C to 80°C), PTFE (Chemical, -20°C to 200°C) |
| Connection Standard | EN 1092-2, ANSI B16.5, JIS B2212, AS2129 |
| End Connection | Wafer, Double Flange, Lug Type |
| Leakage Rate | Zero leakage bubble-tight sealing is achievable with appropriate seat selection. |
Benefits for Your Operation:
- System Protection: Safeguards pumps and other critical equipment from damage caused by reverse flow, extending their service life.
- Operational Cost Savings: Reduced pressure drop lowers energy consumption. The compact design saves on space and installation costs.
- Reduced Maintenance Downtime: The assured availability of standard spare parts means faster repairs and less operational interruption.
- Versatility: Suitable for a wide range of applications including potable water distribution, wastewater treatment, HVAC systems, industrial cooling water, and irrigation.
- Reliable Sourcing: Manufactured under an ISO 9001 quality management system, ensuring consistent product quality and performance.
When you choose the CBT4303 from Shanghai Zhibang Valve, you are not just purchasing a valve; you are investing in system reliability backed by a manufacturer with a proven global track record. Our products reach customers in over a dozen major markets worldwide, supported by efficient logistics from key ports like Shanghai, Guangzhou, and Hong Kong. The ISO 9001 certification underpins our commitment to quality at every production stage. We understand that downtime is costly, which is why we emphasize the ready availability of spare parts for the CBT4303. For a robust, space-saving, and maintenance-friendly solution to prevent backflow in your piping network, contact us for detailed specifications, pricing, and delivery schedules tailored to your project needs.
Frequently Asked Questions (FAQ)
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Q: What is the main difference between this butterfly non-return valve and a standard swing check valve?
A: The primary difference lies in the design and space requirement. Our CBT4303 has a compact wafer-style design that fits between flanges, making it lighter and requiring less installation space than a swing check valve, which has a larger body and often requires extra clearance for the swing arm. -
Q: Can this valve be used for vertical pipe installation?
A: Yes, it can be installed in vertical pipelines. However, the orientation (flow direction upward or downward) should be confirmed with our technical team to ensure optimal disc movement and sealing performance. -
Q: What media is this valve suitable for?
A: With the appropriate material selection for body, disc, and seat, it is suitable for water, air, wastewater, oils, and certain mild chemicals. The standard seat material EPDM is excellent for cold and hot water applications. -
Q: How does the 'standard spare parts available' benefit me as a buyer?
A: This means common wear parts like seals (seats), the disc, and shaft seals are kept in stock as standard inventory items. This significantly reduces lead time for maintenance and repair, minimizing system downtime. -
Q: Is this valve suitable for high-cycle applications where it opens and closes frequently?
A: Yes, the design is well-suited for frequent operation. The lightweight disc and robust bearing design ensure smooth, reliable cycling. For extremely high-cycle duties, specific material upgrades may be recommended. -
Q: What is the typical delivery time for an order?
A: Delivery time depends on the size, material specification, and order quantity. For standard configurations in common sizes, we often have stock or short production lead times. We provide accurate delivery estimates with every quotation. -
Q: Do you provide customizations, such as special coatings or materials?
A: Yes, as a manufacturer, we offer customization options. These can include special epoxy or rubber linings, exotic alloys for corrosive services, or modifications to meet specific dimensional standards. Please inquire with your requirements. -
Q: What kind of testing is performed on these valves before shipment?
A> Valves undergo routine tests which may include shell strength tests, seat leakage tests, and operational checks to ensure proper disc movement and sealing, in accordance with relevant industry standards.
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