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Home > Industrial Equipment & Components > Valve > Check Valve > Zhibang Valve Marine Slow Closing Check Valve, Cast Steel Body, DN50-DN300, PN1.0-4.0MPa, Flanged LR ABS Certified
Zhibang Valve Marine Slow Closing Check Valve, Cast Steel Body, DN50-DN300, PN1.0-4.0MPa, Flanged LR ABS Certified
Product Spotlights
Marine slow closing check valve with cast steel body, DN50-DN300, PN1.0-4.0MPa, flanged ends, and LR ABS certification. Effectively prevents water hammer, durable in harsh marine environments, customizable per project, backed by ISO9001 factory with global delivery from Shanghai.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine
Standard:
Other, ISO9001
body_material:
Cast Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Standard
Other, ISO9001
body_material
Cast Steel
nominal_diameter
DN50-DN300
pressure_rating
PN1.0-4.0MPa
connection_type
Flanged
certification
LR ABS Certified
valve_type
Slow Closing Check Valve
brand
Zhibang
port_size_range
2“ - 12“
Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016 with an annual export value of US$1–1.5 million, is proud to offer the Zhibang Valve Marine Slow Closing Check Valve. Engineered from high-grade cast steel and covering nominal diameters DN50 to DN300, this valve is designed to meet the rigorous demands of marine and industrial fluid systems. With pressure ratings from PN1.0 to 4.0 MPa, flanged ends, and LR ABS certification, it delivers reliable anti-reverse flow performance while minimizing water hammer through its slow-closing mechanism.
Our factory, located in Shanghai, China, serves global markets including North America, South America, Europe, Southeast Asia, Africa, and Oceania. We combine advanced manufacturing techniques with strict quality control under our ISO9001 management system. This check valve is a trusted choice for shipbuilding, offshore platforms, and high-pressure pipeline systems where safety and durability are non-negotiable.
Key Features & Technical Specifications
- Slow-Closing Design: Effectively reduces water hammer and pressure surges, protecting downstream equipment and piping.
- Cast Steel Body: High tensile strength and corrosion resistance, suitable for marine environments.
- Flanged Connections: Easy installation and maintenance, compatible with international flange standards (ANSI, DIN, JIS available upon request).
- Wide Pressure Range: PN1.0–4.0 MPa (Class 150–300 equivalent) covers low to medium-high pressure applications.
- LR ABS Certified: Meets Lloyd’s Register and American Bureau of Shipping requirements for marine safety.
- Low Maintenance: Simple internal structure ensures long service life and minimal downtime.
Detailed Technical Data
| Parameter | Details |
|---|---|
| Nominal Diameter | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 |
| Pressure Rating | PN1.0, PN1.6, PN2.5, PN4.0 MPa (or Class 150/300) |
| Body Material | Cast Steel (WCB, WCC, LCB optional) |
| Trim Material | Stainless Steel (304/316 optional) |
| Connection | Flanged (RF, FF; drilling according to GB, ANSI, DIN) |
| Certification | LR ABS Certified; ISO9001:2015 |
| Operating Temperature | -29°C to 425°C (depending on material) |
| Applications | Marine ballast systems, fire main, cooling water, oil & gas, industrial process |
Why Choose Zhibang Marine Slow Closing Check Valve?
- Water Hammer Prevention: The slow-closing disc gently returns to seat, preventing slam and pressure spikes that can damage pipes and pumps.
- High Durability: Cast steel body with reinforced design withstands harsh marine conditions, including saltwater exposure and vibration.
- Flexible Customization: Pressure class, face-to-face dimensions, and trim materials can be tailored per project requirements. (customizable)
- Cost-Effective: Long lifecycle and low maintenance reduce total cost of ownership for shipowners and plant operators.
- Global Support: With shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to any major port worldwide.
Frequently Asked Questions (FAQ)
-
Q: What is the advantage of a slow closing check valve over a standard swing check valve?
A: The slow closing mechanism significantly reduces water hammer and associated noise/pressure spikes, making it ideal for systems where rapid flow reversal occurs, such as marine pumps and fire mains. -
Q: Is this valve suitable for seawater service?
A: Yes, the cast steel body with optional epoxy coating and stainless steel trim provides excellent corrosion resistance in seawater. For highly aggressive environments, consult our engineering team for material upgrades. -
Q: Can I get the valve with different flange standards?
A: Absolutely. While our standard is flanged per GB/T, we offer ANSI 150/300, DIN PN10/PN16/PN25/PN40, and JIS 10K/20K upon request. -
Q: What certifications does this valve hold?
A: This valve is LR (Lloyd's Register) and ABS (American Bureau of Shipping) type approved for marine applications. Our factory is ISO9001 certified and can provide full material traceability reports. -
Q: What is the delivery lead time for a typical order?
A: For standard sizes DN50–DN200, lead time is approximately 15–25 working days after order confirmation. Larger sizes or customized orders may require 30–40 days. -
Q: Do you provide installation and maintenance manuals?
A: Yes, each valve ships with a comprehensive manual covering installation, operation, and maintenance guidelines. Technical support is available via email or phone. -
Q: What is the warranty period?
A: We offer a standard 12-month warranty from the date of shipment against manufacturing defects. Extended warranty options are negotiable for large projects. -
Q: How do I ensure the correct pressure class for my system?
A: Refer to your system’s maximum working pressure. Our PN2.5 valve (equivalent to Class 150) covers most marine applications. For higher pressures up to 4.0 MPa, select PN4.0. Our sales engineers can assist in selection.
Trust Shanghai Zhibang Valve for Reliable Marine Fluid Control
Since 2016, Zhibang Valve has delivered over 50,000 valves to clients in more than 30 countries. Our annual export value exceeding US$1 million reflects the trust placed in our products. Every marine slow closing check valve undergoes hydrostatic testing, shell testing, and seat leakage testing before shipment. With LR ABS certification and ISO9001 quality management, we provide full documentation including test certificates and material certifications. Choose Zhibang – your partner for safe, efficient, and long-lasting valve solutions. Contact us today for a quotation or technical consultation. We look forward to serving your next project from our Shanghai factory to your doorstep.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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