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Help CenterMarine Grade Bronze Globe Check Valve DN15-DN50 PN1.0-2.5MPa Threaded Flanged BV
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Shanghai Zhibang Valve Manufacture Co., Ltd proudly presents our Marine Grade Bronze Globe Check Valve in sizes DN15 to DN50, designed for reliable backflow prevention in demanding marine environments. Since our establishment in 2016, we have supplied over US$1 million to US$1.5 million worth of valves annually to global markets including North America, Europe, Southeast Asia, and Oceania. This globe check valve combines the corrosion resistance of marine-grade bronze with the robust performance of a globe-style disc, ensuring tight sealing and long service life in seawater, freshwater, and oily water systems.
The valve is engineered for PN1.0 to PN2.5MPa pressure ratings and is available with threaded (NPT/BSP) or flanged (ANSI/DIN) end connections, offering flexibility for new installations or retrofits. Each unit is manufactured under our ISO9001 quality management system, with strict material traceability and pressure testing. Whether used in shipbuilding, offshore platforms, or dockyard piping, this check valve minimizes water hammer and ensures unidirectional flow control.
Key Features & Technical Specifications
- Marine-Grade Bronze Body: High copper alloy (C95500 or equivalent) resists corrosion from seawater and salt spray, exceeding standard brass valves in durability.
- Globe-Style Disc Design: Provides a straighter flow path compared to swing check valves, reducing pressure drop and minimizing the risk of chatter in low-flow conditions.
- Double Sealing Mechanism: Metal-to-metal seating with optional EPDM or PTFE insert for bubble-tight shut-off (customizable upon request).
- Compact & Lightweight: Overall length and weight are optimized for confined spaces common in marine piping systems.
- Temperature Range: Standard -20°C to +200°C; higher temperature versions available.
- Pressure Ratings: Tested to 1.5 times the nominal pressure; available in PN1.0, PN1.6, PN2.0, PN2.5MPa.
- Connection Standards: Threaded ends conform to ASME B1.20.1 (NPT) or ISO 228 (BSP); flanged ends per ASME B16.5 or DIN 2501.
| Parameter | Value |
|---|---|
| Nominal Diameter | DN15, DN20, DN25, DN32, DN40, DN50 (also available 2" in inches) |
| Pressure Rating | PN1.0 – PN2.5MPa (150# – 300# equivalent) |
| Body Material | Marine Grade Bronze (ASTM B148 C95500 / B62 C83600) |
| End Connections | Threaded (NPT/BSP) or Flanged (ANSI Class 150/300, DIN PN10/16/25) |
| Seat Material | Bronze to Bronze (standard); optional PTFE or EPDM soft seal |
| Operation | Automatic (spring-assisted or gravity closure) |
| Testing | 100% hydrostatic shell test & 100% seat leakage test |
Advantages for Your Marine System
- ✅ Extended Service Life: Marine bronze eliminates dezincification and stress corrosion cracking common in inferior brass valves.
- ✅ Low Maintenance: Self-cleaning seat design reduces scale buildup; no external actuator required.
- ✅ Versatile Installation: Can be mounted horizontally or vertically with flow arrow guides on body.
- ✅ Compliance Ready: Valves are manufactured to meet international marine classification society requirements (e.g., DNV, ABS, BV – optional certification available upon request and at extra cost).
- ✅ Global Compatibility: Threaded ends conform to NPT (North America) and BSP (Europe/Asia); flanges to ANSI or DIN standards.
At Shanghai Zhibang Valve, we have supplied over 50,000 check valves to shipyards, offshore drilling companies, and marine service providers since 2016. Our annual export value of US$1 million to US$1.5 million reflects the trust from clients across North America, Europe, Southeast Asia, Africa, and Oceania. We offer custom branding, packaging, and mixed container loading to meet your procurement needs.
Ready to upgrade your marine piping system? Contact our team for a quote, technical drawing, or sample testing. We ship from Shanghai, Guangzhou, Hong Kong, or Beijing with fast delivery worldwide. Your satisfaction is backed by our ISO9001 quality system and responsive after-sales service.
Frequently Asked Questions (FAQ)
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Q: What is the difference between this globe check valve and a standard swing check valve?
A: A globe check valve has a disc that moves linearly along the flow axis, providing a shorter stroke and quicker closure, which reduces water hammer. It is preferred in marine applications where space is limited and low-pressure drop is desired. -
Q: Can this valve be used for seawater?
A: Yes, the marine-grade bronze body is specifically designed to resist corrosion from seawater, brine, and salt-laden atmospheres. It is widely used in ship ballast systems, cooling water lines, and fire mains. -
Q: Do you offer a BV (Bureau Veritas) certificate for the valve?
A: While our production is ISO9001 certified, classification society approval (BV, DNV, ABS, etc.) can be arranged upon request. Please specify your requirement when ordering; additional cost and lead time may apply. -
Q: What end connections are available?
A: We offer both threaded (NPT per ASME B1.20.1 or BSP per ISO 228) and flanged (ANSI 150/300 or DIN PN10/16/25). Custom connections are possible for large orders. -
Q: What is the maximum operating temperature?
A: Standard valves are rated for -20°C to +200°C. For higher temperatures (up to 350°C), we can supply with a stainless steel seat and high-temperature seals – please consult our engineers. -
Q: How do I choose between threaded and flanged versions?
A: Threaded connections are easier to install in small-diameter lines and allow for quick maintenance. Flanged connections offer more robust sealing and are preferred for larger sizes (DN40 and above) or high-pressure systems. -
Q: What is the lead time for samples and bulk orders?
A: Sample orders (1-5 pieces) can be shipped within 7-15 days. Bulk orders (100+ pieces) typically require 20-30 days, depending on quantity and connection type. We can expedite for urgent projects. -
Q: Do you provide technical drawings or 3D models?
A: Yes, we can provide dimensional drawings, weight data, and 3D step files upon request to assist with your design integration.
Note: All valves are carefully inspected and tested before shipment. For any special requirements (e.g., different materials, pressure classes, or certifications), please contact our sales team.
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