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Help CenterMarine Seawater Circulation Bronze Check Valve, Inline 200 PSI, 316SS Seat, ASTM B62 Compliant
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Shanghai Zhibang Valve Manufacture Co., Ltd., an ISO9001-certified manufacturer established in 2016, presents our Marine Seawater Circulation Bronze Check Valve – an inline, 200 PSI rated valve with a 316 stainless steel seat, fully compliant with ASTM B62. Designed specifically for the demanding marine environment, this check valve ensures reliable backflow prevention in seawater circulation systems, offering exceptional corrosion resistance and long service life. Our extensive export experience to markets across North America, South America, Europe, and Asia guarantees that every valve meets rigorous international quality standards.
Key Features & Technical Specifications
- Bronze Body (ASTM B62) – High-strength, dezincification-resistant bronze ideal for saltwater and brackish water applications.
- 316 Stainless Steel Seat – Provides superior wear resistance and prevents galling, ensuring a tight seal even under high flow velocities.
- Inline Configuration – Compact design for easy installation in horizontal or vertical pipelines with minimal space requirement.
- Pressure Rating: 200 PSI – Suitable for moderate to high-pressure marine circulation systems.
- Full Port Design – Minimizes pressure drop and allows smooth flow, reducing energy consumption.
- Low Maintenance – Self-cleaning seat and internal components reduce fouling from seawater debris.
Technical Data Table
| Parameter | Value |
| Body Material | Bronze (ASTM B62) |
| Seat Material | 316 Stainless Steel |
| Max Working Pressure | 200 PSI (13.8 bar) |
| Temperature Range | -20°F to 150°F (standard); optional high-temp up to 250°F |
| Connection Type | Inline – threaded (NPT/BSPT) or flanged (ANSI/DIN) upon request |
| Available Sizes | 1/2" to 4" (custom sizes available for OEM projects) |
| Compliance | ASTM B62, ISO9001 quality system |
Customer Benefits
- Extended Service Life – The combination of bronze and 316SS resists pitting and crevice corrosion commonly found in seawater, reducing replacement frequency.
- Reliable Anti-Siphon Protection – Prevents reverse flow that could contaminate fresh water systems or damage pumps.
- Easy Installation – Lightweight inline design can be mounted in any orientation without special brackets.
- Cost-Effective – Lower initial cost compared to duplex or superalloy valves, while still delivering excellent performance.
- Global Availability – Shipped from Shanghai, Guangzhou, Hong Kong, or Beijing, with competitive lead times for large orders.
At Shanghai Zhibang Valve, we have been manufacturing high-quality valves since 2016, with an annual export value exceeding US$1 million. Our products are trusted by clients in North America, Europe, Southeast Asia, and Africa. We adhere strictly to ISO9001 quality management procedures, ensuring every check valve undergoes pressure testing, material verification, and dimensional inspection before shipment.
Trusted by Industry Professionals – Our marine check valves are used in shipbuilding, offshore platforms, desalination plants, and coastal cooling systems. With a dedicated R&D team and a network of experienced distributors, we provide technical support and after-sales service worldwide.
Contact us today for a quote or technical consultation. Whether you need a standard inline check valve or a customized solution for your specific seawater circulation requirements, we are ready to assist. Your satisfaction is our priority.
Frequently Asked Questions (FAQ)
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Q: Can this valve be used for potable water?
A: Yes, the bronze material is lead-free compliant (upon request), but it is primarily designed for seawater. For potable water, please specify if you need a lead-free version. -
Q: What is the maximum temperature for standard operation?
A: Standard model handles up to 150°F (65°C). For higher temperatures, we offer an optional high-temp seat upgrade (e.g., PTFE or reinforced polymer). -
Q: Is the valve suitable for vertical installation?
A: Yes, the inline design allows mounting in both horizontal and vertical pipelines, though horizontal with flow upward is recommended for optimal sealing. -
Q: Do you offer NPT or BSPT threads?
A: Both NPT (National Pipe Thread) and BSPT (British Standard Pipe Taper) are available. Please specify your thread standard when ordering. -
Q: What is the typical lead time for a standard size order?
A: For stock sizes (1/2" to 2"), lead time is 7–15 days. Custom sizes or flanged connections may require 20–30 days depending on quantity. -
Q: Can the valve be used in a system with high flow velocity (e.g., >10 ft/s)?
A: The 316SS seat and bronze body can handle velocities up to 15 ft/s without significant wear. For higher velocities, we recommend a larger size or a different valve type. -
Q: Do you provide certificates of material compliance?
A: Yes, we can provide a mill test certificate for the bronze and 316SS materials upon request, as well as a pressure test report. -
Q: What is the warranty period?
A: We offer a standard 12-month warranty against manufacturing defects. Extended warranty options are available for bulk orders.
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