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Help CenterEpoxy Coated Marine Check Valve for Ballast Water System Ductile Iron DN50-DN300 PN1.0-1.6MPa Flanged Connection
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Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016, is a professional manufacturer specializing in high-quality valves for marine and industrial applications. With an annual export value of US$1 Million – US$1.5 Million and a global reach to North America, South America, Europe, Africa, Oceania, and Asia, we are proud to introduce our Epoxy Coated Marine Check Valve specifically designed for ballast water systems. This valve combines robust ductile iron construction with a durable epoxy coating, ensuring excellent corrosion resistance and long service life even in demanding seawater environments. Available in sizes DN50 to DN300 and pressure ratings PN1.0–1.6MPa, with flanged connections for easy installation, it meets the strict requirements of modern ballast water management systems.
Key Features & Technical Specifications
- Premium Material: Body and seat made from ductile iron (GGG40/GGG50) – offers high strength, impact resistance, and excellent durability under marine conditions.
- Epoxy Coating: Internal and external epoxy coating (up to 250μm) provides superior protection against corrosion from saltwater, chemicals, and abrasive particles. Coating complies with IMO PSPC (optional) and other marine standards.
- Flanged Connection: Standard flanged ends (EN1092, DIN, ANSI, JIS available) ensure secure, leak-tight installation and easy maintenance.
- Wide Size & Pressure Range: Available from DN50 to DN300 with pressure ratings PN1.0, PN1.6 MPa (150LB optional). Suitable for various ballast water system line ups.
- Reliable Sealing: Precision-machined seat and disc provide low leakage (meeting API 598 / ISO 5208 requirements). Optional soft seat (EPDM, NBR) for bubble-tight shut-off.
- Easy Installation: Compact design with flanged connections simplifies piping layout and reduces installation time.
- Compliance: Manufactured under ISO9001:2015 certified quality management system; can be supplied with material certificates, hydrostatic test reports, and NDT reports upon request.
- Customizable: Available in different disc types (swing, lift, tilting disc), seat materials, and actuation options (manual, pneumatic, electric) to suit specific project needs.
Technical Parameters (Typical)
| Parameter | Value / Range |
|---|---|
| Size Range | DN50 – DN300 (2″ – 12″) |
| Pressure Rating | PN1.0 / PN1.6 MPa (150LB optional) |
| Body Material | Ductile Iron GGG40/GGG50 |
| Coating | Epoxy (internal & external), thickness 150–250 μm |
| Connection Type | Flanged (EN1092, ANSI B16.5, JIS B2220) |
| Working Temperature | -10°C to +80°C (higher temp available) |
| Test Pressure (Hydrostatic) | 1.5 × PN (Shell) / 1.1 × PN (Seal) |
| Applicable Media | Seawater, ballast water, fresh water, oily water |
Advantages for Your Ballast Water System
- Corrosion Resistance: The epoxy coating combined with ductile iron provides exceptional protection against seawater corrosion, reducing maintenance frequency and extending valve lifespan.
- Reliable Backflow Prevention: Designed to prevent reverse flow in ballast water lines, ensuring system integrity and compliance with IMO D-2 ballast water treatment standards.
- Cost-Effective: Economical material choice without sacrificing performance; the epoxy coating eliminates the need for expensive exotic alloys in many applications.
- Versatile Installation: Flanged connections allow quick integration into existing pipeline systems with standard bolt patterns.
- Global Support: As a manufacturer with over 8 years of experience and exports to over 20 countries, we provide responsive technical support and after-sales service.
Trust & Reliability – Our Commitment
Since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd has been dedicated to delivering valves that meet the highest quality standards. Our ISO9001:2015 certified production processes ensure consistent product quality. With an annual export value of US$1M–US$1.5M and a global customer base spanning North America, South America, Europe, Africa, Oceania, and Asia, our marine check valves have been successfully used in numerous ballast water systems. We ship from major Chinese ports (Shanghai, Guangzhou, Hong Kong, Beijing) ensuring timely delivery worldwide. Our team is ready to provide customized solutions, from special coatings to actuation options. Contact us today to request a quote, technical drawing, or sample. Experience the reliability of Zhibang valves for your marine projects.
Frequently Asked Questions (FAQ)
Q1: What is the typical lead time for this epoxy coated marine check valve?
A: For standard sizes (DN50–DN200) in stock, we can ship within 7–15 days after order confirmation. For custom sizes or coatings, lead time is 20–30 days depending on quantity.
Q2: Can the epoxy coating withstand UV exposure or high temperatures?
A: The standard epoxy coating is suitable for indoor/marine environments; for outdoor UV exposure, we recommend a UV resistant top coat or special paint (available upon request). For temperatures above 80°C, other coating materials (e.g., nylon, PTFE) can be considered.
Q3: Does this valve comply with IMO Ballast Water Management regulations?
A: The valve itself is a mechanical component; it does not treat ballast water but can be integrated into any ballast water treatment system. Our valve is designed to meet the durability and performance requirements of such systems. We can provide material certificates and test reports to support your compliance documentation.
Q4: What flange standards are available?
A: We offer EN1092 (PN10/PN16), ANSI B16.5 Class 150, JIS B2220 10K/16K, and other standards on request. Please specify when ordering.
Q5: What is the minimum order quantity (MOQ)?
A: For standard sizes, MOQ is generally 1 piece for sample orders, and 10 pieces for bulk orders. For non-standard sizes or customization, MOQ may be higher – contact our sales team.
Q6: Do you offer a warranty?
A: Yes, we offer a standard 12-month warranty from date of shipment against manufacturing defects. Extended warranty options are available upon request.
Q7: Can I get a sample before bulk order?
A: Certainly! Sample orders are welcome. The sample cost is negotiable, and we can refund the sample fee after bulk order (depending on quantity). Shipping cost is borne by the customer.
Q8: How do you ensure the quality of the epoxy coating?
A: Each valve undergoes visual inspection, coating thickness measurement (using calibrated gauge), and holiday detection (spark test) to ensure pinhole-free coating. Coating adhesion test (cross-cut) is also performed as per ISO standard. All records are available upon request.
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