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Home > Industrial Equipment & Components > Valve > Safety Valve > Cast Iron Marine Water Safety Valve Threaded Flanged DN15-DN80 PN1.6 for Water Tanks
Cast Iron Marine Water Safety Valve Threaded Flanged DN15-DN80 PN1.6 for Water Tanks
Product Spotlights
Cast iron marine safety valve for water tanks, DN15–DN80, PN1.6. Threaded or flanged connections. ISO9001 certified. Corrosion-resistant, reliable overpressure protection. Customizable set pressure. Factory direct, global shipping from Shanghai, Guangzhou, Hong Kong, Beijing.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Cast Iron
Connection Type:
Threaded / Flanged
Size Range:
DN15 – DN80
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Cast Iron
Connection Type
Threaded / Flanged
Size Range
DN15 – DN80
Pressure Rating
PN1.6 (1.6 MPa / 232 psi)
Application
Marine water tanks, fresh/salt water systems
Standards
ISO9001 certified
Temperature Range
-10°C to +120°C (standard)
Color
Black or gray (customizable)
Brand
Shanghai Zhibang Valve
Type
Safety / Relief Valve
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$1–1.5 million and a global presence across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East, we bring years of expertise to every product. Our Cast Iron Marine Water Safety Valve (Threaded & Flanged, DN15–DN80, PN1.6) is designed specifically for water tanks on ships, offering reliable overpressure protection, corrosion resistance, and easy installation. Whether you need a threaded or flanged connection, this valve meets the demanding requirements of marine environments.
Key Features & Technical Specifications
- Durable Cast Iron Construction – withstands seawater corrosion and mechanical stress, ensuring long service life in marine water tanks.
- Dual Connection Options – available in both threaded (BSP/NPT) and flanged (PN16/ANSI 150) configurations to suit different piping systems.
- Wide Pressure Range – rated PN1.6 (1.6 MPa / 232 psi), suitable for most low-pressure water tank applications.
- Compact Design – from DN15 to DN80, the valve fits tight spaces while providing adequate flow capacity.
- Precision Set Pressure – factory-tested to open at the specified set pressure, preventing overpressure damage to tanks.
- Easy Maintenance – simple structure allows quick disassembly and cleaning; spare parts are readily available.
- ISO9001 Quality Management – our manufacturing processes are certified, ensuring consistent product quality.
- Customizable Options – different set pressures, materials (e.g., stainless steel trim), and special coatings available upon request.
| Parameter | Value |
|---|---|
| Nominal Diameter (DN) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80 |
| Pressure Rating | PN1.6 (1.6 MPa / 232 psi) |
| Connection Type | Threaded (BSP/NPT) or Flanged (PN16, ANSI 150) |
| Body Material | Cast Iron (GG25 / ASTM A48) |
| Seat Material | Stainless Steel (304 / 316) or Brass (optional) |
| Set Pressure Range | 0.1 – 1.6 MPa (customizable) |
| Operating Temperature | -10°C to +120°C (standard); higher temperature options available |
| Applicable Medium | Fresh water, seawater, cooling water, ballast water |
| Standards Compliance | ISO9001, ASME/API (optional), marine classification society (available upon request) |
Why Choose Our Cast Iron Marine Safety Valve?
- Reliable Overpressure Protection – The valve opens automatically when the tank pressure exceeds the set point, preventing explosions or tank rupture.
- Corrosion Resistance – Cast iron with epoxy coating (optional) offers excellent resistance to saltwater and humidity, common in marine environments.
- Versatile Installation – Threaded ends are ideal for small-bore pipework, while flanged ends provide secure, leak-proof connections for larger lines.
- Low Maintenance – Simple design with fewer moving parts reduces the risk of failure; the valve can be easily cleaned or repaired in situ.
- Cost-Effective – Compared to bronze or stainless steel safety valves, our cast iron model offers a budget-friendly solution without compromising performance.
- Global Shipping Support – We ship from Shanghai, Guangzhou, Hong Kong, and Beijing ports, ensuring fast delivery to major markets worldwide.
Trust & Reliability
Shanghai Zhibang Valve has been a trusted manufacturer since 2016, exporting to 16+ markets including North America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our products are manufactured under an ISO9001 certified quality management system, ensuring consistent performance and traceability. Every valve undergoes rigorous hydrostatic and seat leakage testing before shipment. We also offer custom set pressure calibration, special coatings, and third-party inspection (e.g., Lloyd's, BV) upon request.
With annual export turnover exceeding US$1 million, we have built long-term partnerships with shipbuilders, marine engineering companies, and water treatment system integrators. Our dedicated technical support team can help you select the right valve size, connection type, and set pressure for your specific water tank application.
Contact us today for more details, a quotation, or a sample. We are ready to provide the best solution for your marine water safety needs.
Frequently Asked Questions (FAQ)
-
What is the maximum working pressure of this valve?
The valve is rated PN1.6, meaning it can handle up to 1.6 MPa (232 psi) at the inlet. The set pressure is adjustable and typically set between 0.1 and 1.6 MPa. -
Can this valve be used for seawater?
Yes, the cast iron body with appropriate coating (e.g., epoxy) and stainless steel trim is suitable for seawater. For highly corrosive environments, we recommend optional stainless steel internals. -
What are the available connection types?
We offer both threaded (BSP or NPT) and flanged (PN16, ANSI 150) connections. You can specify your preference when ordering. -
Is the valve temperature resistant?
Standard operating temperature range is -10°C to +120°C. For higher temperatures (up to 250°C), we can provide special seating materials and seals. -
Does the valve come with any certification?
Our factory is ISO9001 certified. Optional certifications from classification societies (e.g., CCS, DNV, LR) are available upon request at additional cost. -
How do I select the correct DN size?
The size depends on your tank's flow rate and pressure requirements. Generally, DN15–DN25 suits small auxiliary tanks, while DN40–DN80 is used for larger storage tanks. Contact our technical team for sizing assistance. -
Can I get a sample before bulk order?
Yes, we accept sample orders. Samples are typically shipped within 5–7 working days after payment. Bulk orders have a lead time of 20–30 days. -
What is the warranty period?
We provide a 12-month warranty from the date of shipment against manufacturing defects. For extended warranty options, please inquire.
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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