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Home > Industrial Equipment & Components > Valve > Check Valve > CB/T497 Marine Water Filter With Mill Test Report, Cast Iron & 316L

CB/T497 Marine Water Filter With Mill Test Report, Cast Iron & 316L

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Product Spotlights

Marine-grade water filter compliant with CB/T497 standard, featuring a durable cast iron body and 316L stainless steel internals for superior corrosion resistance in seawater. Each unit is supplied with a Mill Test Report for material traceability and quality assurance. Ideal for engine cooling, ballast water, and potable water systems on vessels. Customizable port sizes, pressure ratings, and filtration grades available. Manufactured by an ISO9001-certified supplier with global export experience.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Cast Iron Body, 316L Stainless Steel Internals

Application:

Other, Marine Water Filtration Systems

Connection Standard:

CB/T497 Marine Standard

Contact Supplier Request Quote Chat Now

Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Material Other, Cast Iron Body, 316L Stainless Steel Internals

Application Other, Marine Water Filtration Systems

Connection Standard CB/T497 Marine Standard

Certification Mill Test Report Provided

Port Size Customizable (e.g., DN50-DN300)

Filtration Grade Optional (e.g., 50-500 microns)

Pressure Rating Available upon request (e.g., PN10-PN25)

Design Standard Marine Industry Specifications

Optional Features Pressure Gauge, Differential Pressure Indicator

As a dedicated manufacturer with a strong foothold in the global marine supply chain since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our CB/T497 Marine Water Filter. Engineered specifically for the demanding conditions of maritime applications, this filter combines the robust durability of cast iron with the superior corrosion resistance of 316L stainless steel internals. We understand that reliability is non-negotiable in marine operations, which is why every unit is backed by a comprehensive Mill Test Report, providing full traceability and material verification. Our commitment to quality, underscored by our ISO9001 certification, ensures that this product meets the stringent requirements of shipbuilders, shipyards, and vessel operators worldwide, from ballast water treatment to engine cooling and potable water systems.

Core Product Features & Technical Advantages:

Dual-Material Construction: The main body is manufactured from high-grade cast iron for exceptional strength and pressure resistance, while all wetted internal parts (basket, screen, fasteners) are made from 316L stainless steel. This combination offers optimal performance: the cast iron provides structural integrity against water hammer and system shocks, while the 316L components ensure long-term resistance to saltwater corrosion, chlorides, and other aggressive marine elements.
CB/T497 Standard Compliance: Designed and manufactured in strict accordance with the Chinese CB/T497 standard for marine piping accessories. This ensures compatibility with international marine piping systems and adherence to dimensional, pressure, and material guidelines recognized in shipbuilding.
Comprehensive Documentation: Each filter is supplied with a detailed Mill Test Report (MTR) for both the cast iron and 316L stainless steel materials. This report includes chemical composition analysis, mechanical property tests (tensile strength, yield strength, elongation), and heat treatment records, providing essential documentation for class society approvals and quality audits.
Versatile Filtration Performance: The unit is designed to remove solid particles and debris from various onboard water streams. Key applications include:
- Engine Cooling Water: Protects heat exchangers, pumps, and jackets from clogging and abrasive wear.
- Ballast Water: Acts as a pre-filter for ballast water treatment systems.
- Potable & Service Water: Ensures clean water supply for domestic and sanitary use.
- Firefighting Systems: Safeguards pumps and sprinkler heads from particulate blockage.
Robust Design for Easy Maintenance: Features a sturdy, bolted cover design with a pressure-rated gasket for a reliable seal. The filtration basket or screen can be easily removed for cleaning or replacement without requiring special tools, minimizing vessel downtime during routine maintenance.
Customizable Configurations: We offer flexibility to meet specific project needs. Parameters such as port size (flanged or threaded), filtration micron rating, pressure class, and the inclusion of accessories like pressure gauges or drain valves can be tailored upon request.

Technical Specifications Table:

Parameter	Specification
Body Material	Cast Iron (Grade 250 or equivalent)
Internal / Basket Material	316L (UNS S31603) Stainless Steel
Design Standard	CB/T497
Connection Types	Flanged (PN10/16/25), Threaded (NPT, BSP)
Port Sizes (Common)	DN50 (2"), DN80 (3"), DN100 (4"), DN150 (6"), DN200 (8")
Filtration Ratings	Typically 100, 200, 300, 500 microns (customizable)
Gasket Material	NBR (Standard), EPDM, Viton (Optional)
Surface Treatment	Body: Epoxy Coated (RAL 5015) or Galvanized; Basket: Passivated

Benefits for Your Marine Operations:

Enhanced System Longevity: By effectively filtering out harmful particulates, this unit significantly reduces wear and tear on downstream pumps, valves, and sensitive equipment, leading to lower lifecycle costs and fewer unscheduled repairs.
Regulatory Compliance Support: The provision of Mill Test Reports facilitates the documentation process required by major classification societies (such as ABS, DNV, LR, BV) and helps meet international maritime environmental and safety regulations.
Global Supply Chain Reliability: With annual export values between US$1-1.5 million and shipment capabilities from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, we have a proven track record of supplying marine-grade equipment to markets across North and South America, Europe, Asia, Africa, and Oceania. You can rely on our logistical expertise for timely delivery.
Cost-Effective Protection: Investing in a robust, correctly specified filter is a small cost compared to the potential expense of equipment failure, system contamination, or operational downtime at sea.

Choosing Shanghai Zhibang's CB/T497 Marine Water Filter means partnering with an ISO9001-certified manufacturer whose products are trusted in shipyards and on vessels across the globe. Our established presence in over a dozen international marine markets is a testament to the consistent quality and reliability of our offerings. We invite you to leverage our manufacturing expertise to specify the precise filter configuration for your application. Contact us today to request a detailed quotation, discuss your technical requirements, or obtain samples of our Mill Test Reports. Let us help you safeguard your marine systems with a filtration solution built for performance and endurance.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of using 316L stainless steel instead of 304 for the internal parts?
A: 316L stainless steel contains molybdenum, which provides significantly higher resistance to pitting and crevice corrosion in chloride-rich environments like seawater. This makes it the preferred material for critical marine applications to ensure longer service life.
Q: Is the CB/T497 standard recognized outside of China?
A: Yes. While CB/T is a Chinese standard, it is widely referenced and accepted in international shipbuilding, especially for vessels built in or for Asian markets. The dimensional and pressure ratings are often compatible with other international standards like ISO, JIS, or ANSI/ASME.
Q: Can you provide filters certified by specific classification societies?
A: As a manufacturer, we produce the filters to meet the material and design requirements of major class societies. The Mill Test Report we provide is a key document required for obtaining formal approval from classification bodies such as ABS, DNV, or Lloyd's Register. We can guide you through the specific approval process for your project.
Q: How do I determine the correct micron rating for my application?
A: The optimal micron rating depends on the equipment you are protecting. For example, cooling water for diesel engines might require 200-500 microns, while a pre-filter for a finer treatment system might need 100 microns. Our technical team can assist you in selecting the appropriate rating based on your system diagrams and requirements.
Q: What is included in the Mill Test Report?
A: The MTR is a material certificate from the steel mill. It typically includes the heat number/charge number, chemical composition (percentages of C, Mn, Si, Cr, Ni, Mo, etc.), mechanical properties (yield strength, tensile strength, elongation), and often the results of supplementary tests like Charpy impact or hardness, providing full traceability.
Q: What are the available pressure ratings (PN) for these filters?
A> Common pressure classes are PN10 and PN16, suitable for most marine water services. Higher ratings like PN25 are available for specific high-pressure applications. The required pressure class should be specified based on your system's maximum working pressure.
Q: Do you offer different types of end connections?
A> Yes. We can supply filters with flanged ends (to various standards like GB, ANSI, JIS, DIN) or threaded ends (NPT, BSP). Please specify your connection standard and rating when inquiring.
Q: What is your typical lead time for production?
A> Lead times vary based on order quantity and customization. For standard configurations, production can often be completed within 4-6 weeks. We provide accurate lead time estimates with every quotation and prioritize efficient logistics from our strategic port locations.