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Help CenterMarine SS316L Stainless Steel Nitrogen Pressure Reducing Valve Single/Double Stage Double Gauge
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a professional manufacturer specializing in high-quality valves for marine and industrial applications. Our Marine SS316L Stainless Steel Nitrogen Pressure Reducing Valve is engineered to deliver precise pressure control in demanding marine environments. With over US$1 million annual export value and serving global markets including North America, Europe, and Southeast Asia, we bring reliability and expertise to every product. This valve is available in single or double stage configurations with dual high-precision gauges, ensuring accurate monitoring and consistent performance. Built from corrosion-resistant SS316L stainless steel, it withstands harsh saltwater conditions, making it ideal for shipboard nitrogen systems, offshore platforms, and marine equipment.
Our nitrogen pressure reducing valve is designed to reduce high inlet pressure to a stable, adjustable outlet pressure, protecting downstream equipment from pressure surges. The double stage version provides superior regulation even when inlet pressure varies significantly, while the single stage offers a cost-effective solution for stable supply lines. Both options feature dual gauges for inlet and outlet pressure monitoring, allowing operators to quickly assess system status. The SS316L body and internal components ensure longevity and resistance to pitting, crevice corrosion, and stress corrosion cracking commonly found in marine atmospheres.
Key Features & Technical Specifications
- Material: Full SS316L construction – body, bonnet, spring, and diaphragm. Suitable for corrosive environments.
- Stage Options: Single stage for simple systems; double stage for precise regulation under varying inlet pressure.
- Gauges: Two 2.5-inch (63mm) stainless steel gauges with glycerin filling for vibration dampening – one for inlet pressure, one for outlet pressure.
- Pressure Range: Inlet up to 3000 psi (200 bar); outlet adjustable from 0-150 psi (0-10 bar) or custom ranges.
- Connection: NPT female threads (1/4" to 1") available; flanged connections upon request.
- Temperature Range: -20°C to +80°C (-4°F to 176°F).
- Flow Capacity: Cv values from 0.2 to 1.2 depending on size and configuration.
- Seat Seal: PTFE or PEEK for excellent chemical resistance and low leakage.
Technical Parameters Table
| Parameter | Specification |
|---|---|
| Body Material | SS316L (1.4404) |
| Diaphragm Material | SS316L + PTFE |
| Spring Material | SS316 |
| Max Inlet Pressure | 3000 psi (20.7 MPa) |
| Outlet Pressure Range | 0-150 psi (0-1.0 MPa) standard; customizable |
| Gauge Accuracy | ±1.5% full scale |
| Operating Temperature | -20°C to +80°C |
| Connection Type | NPT female (standard); flanged, BSP, etc. available |
| Weight (approx.) | 1.5 kg (single stage) / 2.0 kg (double stage) |
Advantages & Customer Benefits
- Corrosion Resistance: SS316L outperforms 304 or brass in marine environments, reducing maintenance and replacement frequency.
- Precision Control: Double stage design ensures stable outlet pressure even when inlet pressure fluctuates due to cylinder temperature changes or system demand.
- Safety: Built-in relief valve (optional) and overpressure protection; gauges provide real-time monitoring to prevent over-pressurization.
- Versatility: Suitable for nitrogen, argon, helium, and other non-corrosive gases. Customizable for oxygen service (oxygen-cleaned optional).
- Easy Installation: Compact design with standard NPT connections fits into existing marine piping systems without modification.
- Long Service Life: High-quality seals and stainless steel construction withstand vibration, shock, and salt spray per marine standards.
Our factory in Shanghai, China is ISO9001 certified, ensuring consistent quality control from raw material inspection to final assembly. We have exported to North America, South America, Europe, Africa, Oceania, and Asia with annual export revenue exceeding US$1 million. Each valve undergoes rigorous pressure testing, leak testing, and gauge calibration before shipment. We offer flexible shipping from Shanghai, Guangzhou, Hong Kong, or Beijing ports to meet your logistics needs.
Whether you are building a new marine vessel or retrofitting an existing nitrogen system, our Marine SS316L Nitrogen Pressure Reducing Valve delivers the reliability and performance your operations demand. The double gauge configuration allows immediate visual verification of system conditions, reducing downtime and increasing safety. With customization options including outlet pressure range, connection size, and stage type, we can tailor the valve to your exact specifications. Contact us today for a quote or technical consultation – we are ready to support your marine projects with professional service and competitive pricing.
Frequently Asked Questions
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Q: What is the difference between single stage and double stage valves?
A: Single stage reduces pressure in one step, suitable for relatively stable inlet pressure. Double stage uses two reduction steps, providing more stable outlet pressure even when inlet pressure varies (e.g., as cylinder empties). Double stage is recommended for precision applications. -
Q: Can this valve be used for gases other than nitrogen?
A: Yes, it can be used for argon, helium, carbon dioxide, and other non-corrosive, non-flammable gases. For oxygen service, special cleaning and materials are required – please specify when ordering. -
Q: What is the maximum inlet pressure?
A: The standard maximum inlet pressure is 3000 psi (20.7 MPa). Higher pressure ratings are available upon request. -
Q: Are the gauges liquid-filled? Why?
A: Yes, the gauges are glycerin-filled to dampen vibration and pointer flutter, extending gauge life and providing stable readings in marine environments with engine vibration. -
Q: What certifications does your company hold?
A: Our company is ISO9001 certified. Product-specific certifications (e.g., DNV, ABS) can be arranged at additional cost – please contact us for details. -
Q: What is the typical lead time for this valve?
A: For standard configurations (single stage, NPT connections), lead time is about 15-20 working days. Custom orders may take 25-30 days. We offer expedited shipping for urgent projects. -
Q: Do you offer a warranty?
A: Yes, we provide a 12-month warranty against manufacturing defects from the date of shipment. Extended warranty options are available. -
Q: Can I get a sample before bulk order?
A: Yes, sample orders are welcome. We can ship a sample for evaluation with full refund of sample cost if bulk order is placed within 3 months.
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