Contact Platform Support
Help Center
Home > Industrial Equipment & Components > Valve > Safety Valve > Marine Flange Cast Iron Angle Safety Valve CB304-1977 for Boiler Systems
Marine Flange Cast Iron Angle Safety Valve CB304-1977 for Boiler Systems
Product Spotlights
CB304-1977 compliant marine angle safety valve in durable cast iron with flanged connections. Designed for reliable overpressure protection in ship boiler systems, its 90-degree pattern saves engine room space. Offers enhanced safety, simplified maintenance, and aids in meeting marine regulations.
Negotiable
MOQ: 20 Units (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Cast Iron
Standard:
CB304-1977
Connection Type:
Flange
Payment & Shipping
Payment Methods:
Port of Shipment:
shanghai
Delivery Detail:
7 days
Related Products
-
CB3022-1994 2Cr13 Stainless Steel Marine Air Signal Safety Valve DN10 -DN25NegotiableMOQ: 20 Units -
CB3022 Air Signal Safety Valve Compliant With Marine StandardsNegotiableMOQ: 20 Units
-
CB3022 316 Stainless Steel Marine Air Signal Valve With Mill Test ReportNegotiableMOQ: 20 Units
-
CB3022 1/2 Inch NPT Stainless Steel Marine Air Signal ValveNegotiableMOQ: 20 Units
-
CB3022 Stainless Steel Safety Valve for Marine Compressed Air SystemsNegotiableMOQ: 20 Units
Material
Cast Iron
Standard
CB304-1977
Connection Type
Flange
Valve Type
Angle Safety Valve
Application
Marine Boiler Systems
Operating Medium
Steam / Water
Design
Angle Pattern
End Connection
Flanged Ends
As a leading manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in producing high-performance industrial valves for demanding global applications. Our Marine Flange Cast Iron Angle Safety Valve, designed in strict compliance with the CB304-1977 standard, represents our commitment to engineering excellence and operational safety in critical marine environments. This valve is engineered to provide reliable overpressure protection for boiler systems on vessels, ensuring the safety of personnel and equipment. With a proven track record of supplying valves to markets across North America, South America, Europe, Asia, and beyond, we understand the rigorous requirements of marine applications and deliver products that meet and exceed expectations.
This safety valve is a critical component for maintaining system integrity. Its robust construction and precise engineering make it an indispensable safety device.
Core Features and Technical Advantages:
- Robust Cast Iron Construction: The valve body and major components are manufactured from high-grade cast iron, offering superior strength, durability, and excellent resistance to corrosion in marine steam and water service. This material choice ensures a long service life even under constant exposure to harsh conditions.
- Angle Pattern Design: The distinctive angle pattern design allows for a 90-degree change in flow direction directly within the valve body. This design is particularly advantageous in marine boiler systems where space is often constrained, as it can simplify piping layouts, reduce the number of fittings required, and minimize pressure drop.
- Flanged Connection for Secure Mounting: Equipped with standardized flanged ends, the valve ensures a leak-proof, robust, and easily maintainable connection to the boiler system piping. This facilitates straightforward installation, inspection, and potential replacement.
- CB304-1977 Standard Compliance: Manufactured in full accordance with the Chinese Ship Standard CB304-1977, this valve meets specific technical requirements for marine use, including materials, design pressure, temperature ratings, and performance testing protocols. This compliance provides assurance of its suitability for marine applications.
- Precise Overpressure Protection: The valve is calibrated to open at a predetermined set pressure, safely discharging excess medium (steam or water) to prevent boiler pressure from exceeding safe limits. It recloses tightly once system pressure returns to a safe operating level, preventing product loss.
- Reliable Seating and Blowdown: Engineered for tight shut-off to prevent leakage below the set pressure and a controlled blowdown (the difference between opening and closing pressures), ensuring stable system operation and efficient resealing.
Technical Specifications:
| Parameter | Specification / Details |
| Product Model | Marine Flange Cast Iron Angle Safety Valve |
| Design Standard | CB304-1977 |
| Primary Material | Cast Iron (Body & Bonnet) |
| Connection Type | Flange |
| Valve Pattern | Angle Type |
| Main Application | Marine Boiler Systems |
| Operating Medium | Steam, Hot Water |
| Pressure Rating | Available in various classes (specifics upon request) |
| Temperature Range | Suitable for standard boiler operating temperatures |
Benefits for Your Operations:
- Enhanced System Safety: Provides a critical fail-safe mechanism, directly protecting your marine boiler and associated equipment from dangerous overpressure situations, thereby safeguarding your assets and crew.
- Space Optimization: The angle design allows for more efficient use of valuable engine room space by integrating a directional change into the safety valve itself.
- Simplified Maintenance: The flanged design and robust construction facilitate easier inspection, testing, and maintenance procedures, helping to reduce downtime.
- Regulatory Compliance: Using a valve built to the recognized CB304-1977 standard aids in meeting relevant marine safety regulations and classification society requirements for vessel systems.
- Cost-Effective Reliability: The durable cast iron construction offers a favorable balance of performance and cost, delivering long-term reliability with minimal total cost of ownership.
Backed by our ISO9001 quality management system and nearly a decade of manufacturing expertise since our establishment in 2016, Shanghai Zhibang Valve delivers products you can trust. We have successfully exported valves worth over US$1 million annually to diverse and demanding markets worldwide, including North America, Europe, Southeast Asia, and Africa, demonstrating our capability to meet international standards and client needs. Our strategic location with multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing) ensures flexible and efficient logistics for your orders. For a reliable, compliant, and durable safety solution for your marine boiler systems, contact us today to discuss your specifications or request a detailed quotation.
Frequently Asked Questions (FAQ):
-
Q: What is the main purpose of this angle safety valve?
A: Its primary function is to automatically release excess pressure from a marine boiler system when a preset limit is exceeded, preventing potential equipment failure or hazardous situations. The angle design also changes the flow direction by 90 degrees. -
Q: Why is compliance with the CB304-1977 standard important?
A: The CB304-1977 is a Chinese standard specifically for marine valves. Compliance ensures the valve is designed, manufactured, and tested to meet the technical and safety requirements typical for shipboard applications, which often involve unique operating conditions. -
Q: Can this valve be used for applications other than marine boilers?
A: While specifically designed for marine boiler systems, it may be suitable for other industrial steam or hot water systems requiring angle-pattern safety valves and cast iron construction. However, suitability should be verified against the specific service conditions. -
Q: What are the advantages of a flanged connection?
A: Flanged connections provide a strong, leak-resistant joint that is easier to assemble, disassemble for maintenance, and align compared to threaded connections, especially for larger pipe sizes common in boiler systems. -
Q: How is the set pressure of the valve determined?
A: The set pressure is a critical parameter based on the maximum allowable working pressure (MAWP) of the boiler system it protects. It must be specified by the customer according to their system design requirements, and the valve is then calibrated accordingly. -
Q: What maintenance does this safety valve require?
A: Regular inspection and testing are essential to ensure proper operation. This typically involves periodic checks for leaks, verification of the set pressure, and ensuring the moving parts are free to operate. Specific intervals depend on service conditions and regulatory guidelines. -
Q: Are different sizes and pressure ratings available?
A: Yes. We can typically provide this valve in various nominal sizes (DN) and pressure rating classes (PN/Class) to match different boiler system specifications. Please inquire with your specific requirements. -
Q: What is your lead time and shipping capability?
A: As an established manufacturer with annual export experience, we maintain efficient production schedules. Lead times vary based on order quantity and specifications. We ship globally from major Chinese ports like Shanghai and Guangzhou.
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
You May Also Like
-
CB3022 Air Signal Valve for Marine Engine Room Safety AlarmsNegotiableMOQ: 20 Units
-
CB3022 Marine Air Signal Safety Valve for Offshore Platform Control SystemsNegotiableMOQ: 20 Units
-
CB3022 High-Pressure Marine Air Valve With Brass Internal TrimNegotiableMOQ: 20 Units
-
CB3022 Marine Valve With Manual Override and Visual Position IndicatorNegotiableMOQ: 20 Units
-
CB3022 Marine Safety Valve for Shipboard Pneumatic Signal CircuitsNegotiableMOQ: 20 Units
-
CB3022-94 Marine Bronze Air Signal Safety Valve With 150 PSI Working PressureNegotiableMOQ: 1 Unit
-
CB3022-94 Air Release Valve for Marine Pneumatic Control PanelsNegotiableMOQ: 1 Unit
-
CB3022-94 Bronze Air Signal Valve for Shipboard Compressed Air SystemsNegotiableMOQ: 1 Unit
-
CB3022-94 Marine Air Valve Built With ASTM B62 Bronze AlloyNegotiableMOQ: 1 Unit
-
CB3022-94 Air Signal Safety Valve for Marine Engine Room AlarmsNegotiableMOQ: 1 Unit
