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Help CenterCast Iron Marine Air Pressure Reducing Valve, DN15-DN50, PN1.0-4.0MPa, Flanged/Threaded Connection, LR ABS Approved
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Shanghai Zhibang Valve Manufacture Co., Ltd. (established in 2016) is a professional manufacturer specializing in high-quality industrial valves. Our Cast Iron Marine Air Pressure Reducing Valve (DN15–DN50, PN1.0–4.0 MPa, Flanged/Threaded Connection) is designed to deliver precise pressure control in marine air systems. With LR ABS approval and ISO9001 certification, this valve offers reliable performance, corrosion resistance, and long service life – ideal for shipbuilding, offshore platforms, and other demanding maritime environments.
Key Features & Technical Specifications
- Durable Cast Iron Body: Resists seawater corrosion and mechanical wear, ensuring longevity in harsh marine conditions.
- Pressure Range PN1.0–4.0 MPa: Covers a wide spectrum of air pressure reduction requirements, from low to medium-high pressure systems.
- Size Options DN15–DN50: Flexible sizing to fit various pipeline diameters, with both flanged and threaded connection choices.
- LR ABS Approved: Meets Lloyd’s Register and American Bureau of Shipping standards, guaranteeing compliance with international marine safety regulations.
- Precision Pressure Control: Internal balanced piston design ensures stable outlet pressure regardless of inlet fluctuations.
- Easy Maintenance: Modular structure allows quick replacement of internal parts without removing the valve from the pipeline.
| Parameter | Specification |
|---|---|
| Material | Cast Iron (GG25) |
| Nominal Diameter | DN15, DN20, DN25, DN32, DN40, DN50 |
| Pressure Rating | PN1.0 / PN1.6 / PN2.5 / PN4.0 MPa |
| Connection Type | Flanged (GB/T 9119) or Threaded (BSP/NPT) |
| Working Temperature | -10°C to +80°C (standard); higher on request |
| Media | Compressed air, inert gases |
| Certification | LR ABS approved, ISO9001:2015 |
Why Choose Our Marine Air Pressure Reducing Valve?
This valve is specifically engineered for marine air systems, where reliability and safety are paramount. The cast iron construction provides excellent resistance to saltwater corrosion, while the balanced piston design ensures consistent outlet pressure even under variable inlet conditions. Flanged or threaded connections give you flexibility during installation, and the compact size saves valuable space in engine rooms or control panels.
Compared to ordinary pressure reducing valves, our marine version undergoes 100% factory pressure testing and seal performance verification to meet LR ABS requirements. This reduces downtime and maintenance costs for vessels and offshore platforms.
Trusted by Global Customers
Shanghai Zhibang Valve has been a reliable manufacturer since 2016, exporting US$1 – US$1.5 million worth of valves annually to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our ISO9001-certified quality management system ensures every valve meets strict international standards. With convenient shipping from Shanghai, Guangzhou, Hong Kong, and Beijing ports, we deliver your orders efficiently worldwide.
We understand the critical nature of marine applications. That’s why our Cast Iron Marine Air Pressure Reducing Valve is backed by responsive after-sales support and optional customization (e.g., special flanges, higher temperature ranges, or non-standard pressure settings). Contact us today to discuss your requirements and receive a competitive quotation.
Frequently Asked Questions (FAQ)
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Q: What is the maximum working pressure of this valve?
A: The valve is rated PN1.0–4.0 MPa (150–580 psi). The standard model handles up to 4.0 MPa; higher pressure ratings are available upon request. -
Q: Can I use this valve for seawater or other liquids?
A: This valve is designed for compressed air and inert gases. For liquid applications, please consult our technical team for suitable material upgrades. -
Q: Are both flanged and threaded connections available for every size?
A: Yes, DN15–DN50 are offered in both flanged (GB/T 9119) and threaded (BSP or NPT) versions. Please specify your preference when ordering. -
Q: Does the valve come with LR ABS type approval certificates?
A: Yes, each valve is manufactured in accordance with LR ABS requirements and can be supplied with a certificate of conformity upon request. -
Q: What is the typical lead time for this product?
A: For standard sizes and materials, lead time is 15–25 working days. Custom orders may take 30–40 days, depending on complexity. -
Q: How do I maintain the pressure reducing valve?
A: The valve has a modular internal assembly. Regularly inspect the diaphragm and seals, and replace them if worn. Detailed maintenance instructions are included in the user manual. -
Q: Can I get a sample for testing before bulk order?
A: Yes, sample orders are welcome. We provide samples with a lead time of 7–10 days, and the cost can be deducted from the first bulk order. -
Q: What shipping methods do you support?
A: We ship via sea, air, or express (DHL, FedEx, etc.) from Shanghai, Guangzhou, Hong Kong, or Beijing ports. We can also arrange door-to-door delivery.
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