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Help CenterGB/T Marine Gate Valve DN50 DN150 Standard Compliant for Steam Systems
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As a professional manufacturer with a strong presence in global markets, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our GB/T Marine Gate Valve, engineered specifically for demanding steam systems. With our ISO9001-certified production processes and a commitment to quality since 2016, we deliver valves that combine robust construction, reliable performance, and strict adherence to GB/T standards. This valve is designed to provide secure isolation in marine and industrial steam lines, offering durability and ease of operation that our clients across North America, Southeast Asia, Europe, and beyond have come to trust.
Our Marine Gate Valve for steam service is built to withstand the rigorous conditions of high-temperature and high-pressure environments. The gate valve design ensures minimal pressure drop when fully open and provides a tight seal when closed, which is critical for system efficiency and safety.
- Robust Construction: Manufactured from high-grade cast steel or optional stainless steel, the valve body and internal components resist corrosion, erosion, and thermal stress common in steam applications.
- Precise Sealing: Features a flexible wedge or solid wedge gate design paired with precision-machined seats to ensure bubble-tight shut-off, preventing steam leakage and energy loss.
- Standard Compliance: Fully compliant with Chinese GB/T standards, ensuring dimensional interchangeability, performance reliability, and acceptance in markets familiar with these specifications.
- Easy Operation & Maintenance: Equipped with a handwheel for manual operation. The design allows for easy maintenance, seat replacement, and packing adjustment, reducing downtime.
- Versatile Sizing: Available in a practical range from DN50 to DN150 (approximately 2" to 6"), catering to various pipeline dimensions in marine engine rooms, boiler systems, and auxiliary steam lines.
- Flanged Connections: Standard flanged ends (RF or FF) facilitate secure and straightforward installation into existing piping systems, complying with common flange standards.
The technical specifications below outline the key parameters of our standard offering. Customizations regarding materials, pressure ratings, and trim are available to meet specific project requirements.
| Parameter | Specification |
| Product Design Standard | GB/T |
| Nominal Diameter (DN) | 50, 65, 80, 100, 125, 150 |
| Pressure Class | PN16, PN25, PN40 (Customizable) |
| Body Material | WCB Cast Steel / CF8 Stainless Steel (Optional) |
| Seat & Wedge Material | 13Cr / Stainless Steel Trim |
| Stem Material | Stainless Steel |
| Operation Mode | Manual Handwheel (Gear Operator Optional) |
| Connection Standard | Flanged, RF/FF Face |
| Suitable Medium | Saturated Steam, Superheated Steam |
| Max. Operating Temperature | Up to 425°C (Depending on material and pressure class) |
Advantages & Customer Benefits:
- Enhanced System Safety: Reliable shut-off capability minimizes the risk of steam leaks, protecting personnel and equipment.
- Operational Efficiency: Low flow resistance in the open position helps maintain system pressure and reduces pumping energy costs.
- Long Service Life: The use of durable materials and robust design reduces wear, extends maintenance intervals, and lowers the total cost of ownership.
- Global Market Fit: GB/T compliance makes these valves suitable for projects in Asia and other regions where these standards are recognized, while their quality meets the expectations of our diverse clientele from Eastern Europe to Oceania.
- Supply Chain Reliability: With annual export experience and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing), we ensure timely and flexible delivery to support your project schedules.
Choosing Shanghai Zhibang means partnering with a manufacturer that has built a solid reputation through consistent quality and reliable service. Our annual export value of US$1-1.5 Million reflects the trust of numerous clients worldwide. We invite you to experience the reliability of our GB/T Marine Gate Valves. Contact us today to discuss your specific requirements, request a quotation, or learn more about how our valves can enhance the safety and efficiency of your steam systems.
Frequently Asked Questions (FAQ):
Q1: Is this gate valve suitable for both saturated and superheated steam?
A1: Yes, when configured with the appropriate material grade and pressure class, our gate valves are designed to handle both saturated and superheated steam services. Please specify your operating conditions for a precise recommendation.
Q2: What is the main advantage of choosing a GB/T standard valve over other standards?
A2: GB/T is a widely recognized Chinese national standard. Choosing a GB/T compliant valve ensures compatibility with other piping components from Chinese manufacturers and is often required or preferred in projects within Asia and other specific markets. It guarantees defined dimensions, materials, and performance levels.
Q3: Can you provide valves with different end connections besides flanged?
A3: Our standard offering is flanged, which is most common for marine and industrial steam lines. However, other end connections like butt-weld ends can be considered as a customization option based on your request and quantity.
Q4: Do you offer any actuation options beyond the manual handwheel?
A4: Yes. While manually operated valves are standard, we can provide options for gear operators for high-torque applications or can prepare the valve for the later installation of electric or pneumatic actuators. Please inquire for details.
Q5: What is your typical lead time for an order of DN100 valves?
A5: Lead time depends on the order quantity, specific material, and pressure class. For standard WCB material in common pressure classes, we typically maintain stock or can produce within a few weeks. We provide accurate lead times with every quotation.
Q6: Are your valves certified? What about ISO9001?
A6: Our manufacturing facility is certified to ISO9001:2015 for quality management systems, which governs our production processes. The valves themselves are produced to meet GB/T standards. Specific product certifications (like CE, ABS, etc.) can be discussed as optional requirements.
Q7: What kind of after-sales support do you provide?
A7: We provide technical documentation, including dimensional drawings and material certificates. We also offer support for installation guidance and troubleshooting. Spare parts such as gaskets, packing, and even wedges/seats are available for purchase.
Q8: What are your main shipping terms and ports?
A8: We primarily ship FOB or CIF from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing. We work with reliable freight forwarders to ensure smooth logistics to destinations across North America, Europe, Southeast Asia, Africa, and beyond.
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