Contact Platform Support
Help CenterCB/T4303 Marine Check Valve With Counterweight, 12-Month Warranty, Mill Test Report
Product Spotlights
Related Products
-
Counterweighted Marine Check Valve, Slow Close to Prevent Hammer, DN150, CB/T4303NegotiableMOQ: 1 Unit -
Large Diameter Marine Check Valve With Extended Warranty and Technical DocumentationNegotiableMOQ: 1 Unit
-
Marine Engine Room Pipeline Check Valve, DN300, PN1.0MPa, CB/T4303 StandardNegotiableMOQ: 1 Unit
-
CB/T4303 Compliant Large Diameter Check Valve, DN500, Wafer Connection, Mill Test Report ProvidedNegotiableMOQ: 1 Unit
-
Check Valve for Seawater Cooling Systems, DN500, Wafer Design, CB/T4303 CompliantNegotiableMOQ: 1 Unit
Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a dedicated manufacturer specializing in high-quality marine valves. We proudly offer our CB/T4303 Marine Check Valve with Counterweight, engineered to meet the rigorous demands of marine and offshore applications. This valve is designed to prevent backflow in piping systems, ensuring operational safety and system integrity. With an annual export value ranging between US$1 Million and US$1.5 Million, our products have gained trust in markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, and beyond. Our commitment to quality is backed by an ISO9001 certified management system, and every valve comes with a comprehensive 12-month warranty and a Mill Test Report, providing you with verified performance data and peace of mind.
The core function of this check valve is to allow fluid flow in one direction while automatically blocking reverse flow, crucial for protecting pumps, compressors, and other equipment. The integrated counterweight mechanism enhances this function, providing reliable closure even under low-pressure or variable flow conditions common in marine environments.
- Robust Construction: Manufactured from durable materials such as cast steel or stainless steel (customizable upon request), the valve body and internal components are built to withstand corrosive seawater, high pressures, and mechanical stress.
- Counterweight Design: The counterweight ensures positive and swift closure of the disc, minimizing slam and reducing wear on the sealing surfaces. This design is particularly effective in systems with pulsating or fluctuating flow.
- Standard Compliance: Designed and manufactured according to the Chinese CB/T4303 standard for marine valves, ensuring compatibility with marine engineering specifications and practices.
- Versatile Application: Suitable for a wide range of marine systems including ballast systems, bilge systems, cooling water circuits, fuel transfer lines, and general shipboard piping.
- Enhanced Sealing: The sealing arrangement is designed for low leakage, maintaining system efficiency and preventing contamination between different fluid streams.
- Easy Maintenance: The flanged connection design facilitates installation and removal. Internal components can be accessed for inspection or replacement without extensive disassembly of the pipeline.
Below is a summary of typical technical specifications. Specific parameters for your required model can be confirmed upon request.
| Parameter | Description / Range |
|---|---|
| Design Standard | CB/T4303 |
| Nominal Diameter (DN) | 50, 80, 100, 150, 200, 250, 300, 400, 500, 600 |
| Pressure Rating (PN) | 10, 16, 25, 40 |
| Connection Type | Flanged (RF) |
| Body Material | Cast Steel WCB / Stainless Steel 304/316 (Optional) |
| Disc & Seat Material | Stainless Steel with Rubber or Metal Sealing |
| Operating Temperature | -20°C to +120°C (dependent on material) |
| Flow Direction | Horizontal or Vertical (Installation guidance provided) |
Choosing our CB/T4303 Marine Check Valve brings distinct advantages to your operations:
- System Protection: Prevents reverse flow, safeguarding pumps and sensitive equipment from damage, reducing maintenance costs and downtime.
- Operational Reliability: The counterweight mechanism ensures consistent performance under varying system pressures, a common challenge in marine applications.
- Long Service Life: Durable materials and design minimize wear, leading to a longer operational lifespan and better return on investment.
- Documented Quality: The included Mill Test Report provides transparent data on material composition and pressure tests, aiding in system documentation and compliance audits.
- Global Supply Support: With major shipment ports in Shanghai, Guangzhou, Hongkong, and Beijing, we can efficiently deliver to your location worldwide.
Our track speaks for our reliability. Since 2016, Shanghai Zhibang Valve has consistently supplied quality marine valves, supported by an ISO9001 certified quality system. Our annual export volume of US$1-1.5 Million reflects successful partnerships across diverse global markets, from Eastern Asia to Western Europe. Each CB/T4303 Marine Check Valve with Counterweight is not just a product; it's a commitment to safety, durability, and performance, backed by a 12-month warranty. We invite you to consult with us for your specific requirements. Let our expertise and proven product help you build a safer, more efficient marine system.
Frequently Asked Questions (FAQ)
Q1: What is the primary advantage of a counterweight in this check valve?
A: The counterweight assists in closing the valve disc promptly and positively, especially in low-pressure or pulsating flow scenarios. This reduces water hammer (slam) and ensures reliable sealing, enhancing valve longevity and system stability.
Q2: Can this valve be used in non-marine industrial applications?
A: While designed and certified per the marine standard CB/T4303, its robust construction makes it suitable for other industrial applications involving seawater, corrosive fluids, or requiring reliable check valve function. Consultation for specific use cases is recommended.
Q3: What does the Mill Test Report include?
A: The Mill Test Report typically includes chemical analysis and mechanical property test results for the valve body material, along with records of hydrostatic pressure tests performed on the assembled valve, verifying its integrity.
Q4: Are different material options available for corrosive environments?
A: Yes. While cast steel is standard, stainless steel options (304 or 316) are available upon request to provide enhanced corrosion resistance for more aggressive fluids.
Q5: How does the warranty process work?
A: The 12-month warranty covers defects in material and workmanship under normal use. If an issue arises, please contact us with the valve details and Mill Test Report for support and resolution.
Q6: What are the main installation considerations?
A: The valve can be installed in horizontal or vertical pipelines. Ensure flow direction aligns with the valve's indicated arrow. Adequate support should be provided, and the flanged connections should be properly aligned and tightened.
Q7: Can you provide valves with different pressure ratings (PN) or sizes (DN)?
A: Absolutely. We offer a range of sizes from DN50 to DN600 and pressure ratings from PN10 to PN40. Please specify your required parameters for a precise quotation.
Q8: What is your typical delivery lead time?
A: Lead time depends on the specific model, quantity, and material choice. For standard models, shipment can often be arranged promptly from our ports in Shanghai, Guangzhou, Hongkong, or Beijing.
Send Inquiry to This Supplier
You May Also Like
-
Large Diameter Flange End Check Valve for Ballast Water Systems, DN600, Ductile IronNegotiableMOQ: 1 Unit
-
CB/T4303 Standard Check Valve, DN300-DN600, Supplied With Full Material CertificationNegotiableMOQ: 1 Unit
-
Large Diameter Butterfly Check Valve for Main Pipeline Systems, DN400, Ductile Iron BodyNegotiableMOQ: 1 Unit
-
CB/T4303 Large Diameter Check Valve in Ductile Iron With Stainless Steel Disc, DN300-DN600NegotiableMOQ: 1 Unit
-
CB/T4303 Large Diameter Check Valve for Shipboard Fuel Oil Transfer Lines, DN400NegotiableMOQ: 1 Unit
-
Wafer Type Marine Check Valve, DN600, PN1.6MPa, Compliant With CB/T4303 StandardNegotiableMOQ: 1 Unit
-
DNV Approved Marine Check Valve for Oil Systems, CB/T4303 Standard, PN1.6MPaNegotiableMOQ: 1 Unit
-
CB/T4303 Marine Check Valve for Fuel Oil Transfer Systems on VesselsNegotiableMOQ: 1 Unit
-
CB/T4303 Marine Check Valve For Oil, Cast Steel Body With NBR Seal DN50-DN300NegotiableMOQ: 1 Unit
-
Marine Oil Check Valve CB/T4303, Cast Steel Construction, PN4.0MPa Pressure RatingNegotiableMOQ: 1 Unit
