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Home > Industrial Equipment & Components > Valve > Check Valve > Zhibang Valve 1 Year Warranty Ductile Iron Marine Check Valve for Ballast Water DN50-DN300 Flanged PN1.0-1.6MPa
Zhibang Valve 1 Year Warranty Ductile Iron Marine Check Valve for Ballast Water DN50-DN300 Flanged PN1.0-1.6MPa
Product Spotlights
Ductile iron construction for strength and durability; flanged connection simplifies installation; suitable for ballast water and marine systems from DN50 to DN300; pressure ratings PN1.0-1.6MPa; ISO9001 certified with 1-year warranty; customizable seal and coating options for corrosion resistance.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, Ductile Iron (GGG40/50)
Application:
Other, Marine ballast water systems
Size Range:
DN50 to DN300 (2“ to 12“)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Ductile Iron (GGG40/50)
Application
Other, Marine ballast water systems
Size Range
DN50 to DN300 (2“ to 12“)
Connection Type
Flanged (RF/FF)
Pressure Rating
PN1.0 - PN1.6 MPa (150# - 250#)
Warranty
1 Year
Certification
ISO9001
Type
Swing Check Valve
Color
Standard blue (customizable)
Seal Material
Available upon request (e.g., EPDM, NBR)
Shanghai Zhibang Valve Manufacture Co., Ltd is a professional manufacturer established in 2016, specializing in industrial valves for marine and industrial applications. We are proud to present our Ductile Iron Marine Check Valve, designed specifically for ballast water systems with sizes from DN50 to DN300 and pressure ratings of PN1.0-1.6MPa. Our valves are crafted to deliver reliable performance, long service life, and easy installation – backed by a 1-year warranty and ISO9001 certification.
This flanged check valve is built with high-strength ductile iron, offering excellent resistance to mechanical stress and corrosion in harsh marine environments. Whether you are retrofitting an existing ballast water treatment system or constructing a new vessel, our check valve ensures unidirectional flow control, preventing backflow and protecting pumps and other equipment.
Key Features
- Durable Material: Ductile iron body and disc provide superior strength and impact resistance compared to gray iron, suitable for high-pressure marine applications.
- Flanged Connection: Standard raised face (RF) or flat face (FF) flanges enable quick, leak-free installation and easy maintenance.
- Wide Size & Pressure Range: Available from DN50 to DN300 (2–12 inches) and PN1.0 to PN1.6 MPa (150#–250#) to meet various system requirements.
- Ballast Water Compatible: Designed to withstand seawater corrosion and fouling; optional epoxy coating or rubber lining can be applied for enhanced protection.
- 1-Year Warranty: Coverage against manufacturing defects ensures peace of mind for vessel operators and system integrators.
- ISO9001 Certified: Our manufacturing processes follow strict quality management standards, ensuring consistent product quality.
Technical Specifications
| Parameter | Value |
|---|---|
| Body Material | Ductile Iron (ASTM A536 60-40-18 or equivalent) |
| Disc Material | Ductile Iron (with optional stainless steel overlay) |
| Seal Material | EPDM, NBR, or Viton (customizable) |
| Pressure Rating | PN1.0 / PN1.6 MPa |
| Working Temperature | -10°C to 120°C (standard); higher upon request |
| Flange Standard | EN 1092-2 (PN10/16) / BS 4504 / DIN 2501 |
| Test Pressure (Shell) | 1.5x PN |
| Test Pressure (Seat) | 1.1x PN |
| Surface Coating | Epoxy paint (standard); salt spray resistant optional |
Advantages for Marine & Ballast Water Systems
- Prevents Backflow: The swing disc closes quickly when flow reverses, protecting pumps, meters, and treatment units from damage.
- Low Pressure Drop: Full bore design minimizes flow resistance, reducing energy consumption in ballast water pumping operations.
- Corrosion Resistant Options: We can supply valves with internal rubber lining or high-build epoxy coating to extend service life in aggressive seawater environments.
- Easy Installation: Flanged ends allow direct bolting between pipe flanges without special tools. Available with lug or wafer style on request.
- Compliance with Class Regulations: Our valves meet common marine classification requirements (additional certification like Lloyd's or DNV available at extra cost).
Our manufacturing facility in Shanghai, China, produces over 5,000 valves per month. With an annual export value of US$1–1.5 million, we have supplied valves to customers across North America, South America, Europe, Asia, Africa, and Oceania. We are committed to delivering products that match your exact specifications – from size and pressure to trim materials and coatings.
Trust is built on quality and service. Each Zhibang valve undergoes hydrostatic testing and seat leakage tests before shipment. We provide a 1-year warranty against defects in materials and workmanship. Our technical team is available to answer your application questions and recommend the optimal valve configuration for your ballast water system.
Frequently Asked Questions (FAQ)
-
Q: What is the typical lifespan of this check valve in ballast water service?
A: With proper material selection (e.g., coating or lining), the valve can last 5–10 years depending on operating conditions. Regular inspection is recommended. -
Q: Can this valve be used for other media besides seawater?
A: Yes, it is suitable for fresh water, oily water, and many non-aggressive fluids. Contact us for compatibility with specific chemicals. -
Q: Do you offer valves with different flange standards (ANSI, JIS)?
A: Yes, we can customize flange drilling to ANSI B16.5 (150#) or JIS B2220 (5K/10K) upon request. -
Q: What is the delivery time for standard sizes?
A: For DN50-DN200, typical lead time is 15–25 working days. Larger sizes may require 30–40 days, depending on order quantity. -
Q: Is the valve suitable for horizontal or vertical installation?
A: The swing check valve is ideally installed in horizontal pipelines with the hinge pin in the vertical position. Vertical installation (upward flow) is also possible but consult our engineers for best performance. -
Q: How do I seal the bonnet/gland to prevent leakage?
A: Our valves come with a standard gasket and bolted bonnet design. For higher reliability, optional pressure seal bonnet is available for larger sizes. -
Q: Can I get a sample before bulk order?
A: Yes, sample orders are welcome. We can provide one piece per size for testing, with shipping fees on your account. -
Q: Do you have experience with classification society approvals (DNV, Lloyd's)?
A: Yes, we can supply valves with certificates from major classification societies as a custom option. Please specify your requirement.
Contact Shanghai Zhibang Valve Manufacture Co., Ltd today for a quotation or technical consultation. Our team is ready to support your marine valve needs with competitive pricing, fast delivery, and reliable after-sales service.
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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