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Help CenterCB/M1079-81 Standard Marine Pressure Reducing Valve, Cast Steel, DN15-DN100, PN1.6-6.4MPa, Flanged, Adjustable
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As a leading manufacturer specialized in marine valves, Shanghai Zhibang Valve Manufacture Co., Ltd is proud to present our CB/M1079-81 Standard Marine Pressure Reducing Valve. Crafted from high-grade cast steel and available in sizes DN15 to DN100, this valve is designed to reliably reduce and stabilize pressure in shipboard piping systems. With pressure ratings ranging from PN1.6 to PN6.4MPa and a flanged, adjustable configuration, it offers the flexibility and durability required for demanding marine environments. Our commitment to quality is backed by ISO9001 certification and over eight years of export experience to global markets.
Every CB/M1079-81 pressure reducing valve is engineered to meet the rigorous standards of the marine industry. The robust cast steel body ensures long service life even under high pressure and corrosive conditions, while the adjustable spring-loaded mechanism allows precise outlet pressure setting. Whether used for freshwater, seawater, or steam systems, this valve delivers consistent performance and easy maintenance.
Key Features & Technical Specifications
- Material: High-quality cast steel (WCB/LCB available upon request) for strength and corrosion resistance.
- Size Range: DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100 – flanged ends conforming to standard marine dimensions.
- Pressure Rating: PN1.6, PN2.5, PN4.0, PN6.4MPa – suitable for a wide range of system pressures.
- Adjustable Outlet Pressure: Spring-loaded diaphragm design allows easy field adjustment of reduced pressure.
- Standard Compliance: Manufactured in accordance with CB/M1079-81, ensuring compatibility with Chinese shipbuilding specifications.
- Working Temperature: -20°C to +200°C (optional extended range available).
- Connection: Flanged ends (RF/FF) with bolt holes per GB/T 9119 or equivalent.
- Applications: Freshwater, seawater, steam, compressed air, and other non-aggressive fluids in marine systems.
Technical Data Table
| Nominal Size (DN) | Pressure Rating (MPa) | Flange Standard | Weight (kg approx.) |
|---|---|---|---|
| DN15 | 1.6 – 6.4 | GB/T 9119 / CB/T 3519 | 3.5 |
| DN25 | 1.6 – 6.4 | GB/T 9119 / CB/T 3519 | 5.2 |
| DN50 | 1.6 – 6.4 | GB/T 9119 / CB/T 3519 | 9.8 |
| DN80 | 1.6 – 6.4 | GB/T 9119 / CB/T 3519 | 15.4 |
| DN100 | 1.6 – 6.4 | GB/T 9119 / CB/T 3519 | 20.1 |
The adjustable outlet pressure feature allows ship operators to fine-tune downstream pressure without replacing the valve. This reduces downtime and inventory costs. The valve body is designed for easy disassembly, making maintenance simple. Optional accessories such as pressure gauges, gauges, and bypass lines are available upon request.
Why Choose Shanghai Zhibang Valve?
- Established Manufacturer: Since 2016, we have focused on marine valve production with continuous improvement.
- Global Reach: Annual export value of US$1 – 1.5 million, supplying to North America, South America, Europe, Asia, Africa, and Oceania.
- Quality Assurance: ISO9001 certified factory, with strict incoming, in-process, and final inspection procedures.
- Flexible Shipping: Available from Shanghai, Guangzhou, Hong Kong, and Beijing ports to meet your logistics needs.
- Customizable Options: Different flange standards (ANSI, DIN, JIS), special coatings, and non-standard pressure ranges can be arranged.
Frequently Asked Questions (FAQ)
-
Q: What is the maximum inlet pressure for this valve?
A: The valve is rated for PN1.6 to PN6.4MPa (max 6.4 MPa). For higher inlet pressure, please consult our technical team for customized solutions. -
Q: Can the valve be used for seawater?
A: Yes, the cast steel body with appropriate internal coating (e.g., epoxy) can handle seawater. We recommend specifying the fluid type when ordering. -
Q: Is the outlet pressure fully adjustable?
A: Yes, the spring-loaded diaphragm allows continuous adjustment of the reduced outlet pressure within a range (typically 0.1-0.5 times the inlet pressure). Exact range depends on the spring selected. -
Q: What flange standards are available?
A: Standard flanges are per GB/T 9119 (similar to PN). We can also provide ANSI 150/300, DIN PN16/40, or JIS 10K/20K flanges upon request. -
Q: Do you provide test certificates?
A: Yes, we offer material certificates, pressure test reports, and a certificate of compliance with CB/M1079-81. ISO9001 quality documentation is also available. -
Q: What is the typical lead time?
A: For standard sizes (DN15-DN50), lead time is 15-20 days after order confirmation. For larger sizes or custom orders, please allow 25-30 days. -
Q: How do I choose the correct pressure rating?
A: The rating should match the maximum system pressure. We recommend selecting a valve with a pressure rating at least 1.5 times the working pressure for safety margin. -
Q: Can the valve be repaired easily?
A: Yes, the valve can be disassembled for cleaning or replacing the diaphragm, spring, and seats. Spare parts are available from our factory.
At Shanghai Zhibang Valve, we understand that marine systems demand reliability and compliance. Our CB/M1079-81 pressure reducing valve has been delivered to shipyards and fleet operators worldwide, earning trust through consistent performance. With ISO9001 certification, competitive pricing, and a dedicated after-sales team, we are your ideal partner for marine valve solutions.
Contact us today for a quotation or technical discussion. We are ready to support your vessel's pressure control needs with fast delivery and professional service.
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