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Help CenterGB/T1850 Standard Compliant Quick Closing Valve, DN80, Carbon Steel Body, PTFE Seal, 3000PSI
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As a leading manufacturer from Shanghai Zhibang Valve Manufacture Co., Ltd, we take pride in delivering high-performance valves that meet rigorous industrial standards. Our GB/T1850 Standard Compliant Quick Closing Valve, DN80, Carbon Steel Body, PTFE Seal, 3000PSI is engineered to provide reliable emergency shut-off capabilities in demanding environments. Built with a robust carbon steel body and a durable PTFE seal, this valve ensures leak-tight operation under high pressure, making it an ideal choice for oil, gas, petrochemical, and power generation applications. With our ISO9001-certified production processes, each valve is manufactured to exacting specifications, guaranteeing consistent quality and long service life.
This quick closing valve is designed to meet the GB/T1850 Chinese national standard, which specifies requirements for quick-acting shut-off valves used in high-pressure fluid systems. The DN80 (3-inch) nominal diameter allows for substantial flow capacity, while the 3000PSI pressure rating (approximately 207 bar) makes it suitable for medium to high pressure lines. The valve body is constructed from high-quality carbon steel (WCB or equivalent), offering excellent strength and resistance to mechanical stress. The PTFE (Polytetrafluoroethylene) seal provides outstanding chemical resistance and low friction, ensuring smooth operation and minimal wear even after repeated cycles.
Key Features and Benefits
- Quick Closing Mechanism: The valve's design enables rapid closure (within 1-2 seconds) upon activation, either manually or via an actuator, to prevent catastrophic failures in emergency situations.
- High Pressure Capacity: Rated for 3000PSI, this valve can handle demanding applications such as hydraulic systems, steam lines, and high-pressure gas pipelines.
- Corrosion Resistance: Carbon steel body with optional epoxy coating for added protection against corrosion. PTFE seal is inert to most chemicals, ensuring longevity in aggressive media.
- Low Leakage: PTFE seal provides excellent sealing performance, meeting Class VI shut-off requirements (as per API 598) for minimal leakage.
- Easy Maintenance: The valve's modular design simplifies disassembly and replacement of seals and gaskets, reducing downtime.
- Versatile Operation: Available with handwheel, lever, or pneumatic/hydraulic actuator (customizable). Suitable for both on-off and emergency shut-off service.
- Standard Compliance: Fully compliant with GB/T1850, with optional compliance to other standards such as API 6D or ASME B16.34 upon request.
Technical Specifications
| Parameter | Value |
|---|---|
| Nominal Diameter | DN80 (3 inches) |
| Pressure Rating | 3000PSI (207 bar) |
| Body Material | Carbon Steel (WCB / A216 Gr.WCB) |
| Seal Material | PTFE (Polytetrafluoroethylene) |
| Applicable Standard | GB/T1850 |
| Connection Type | Flanged (RF / RTJ) – customizable |
| Operating Temperature | -20°C to +200°C (optional high-temp variant) |
| Leakage Rate | Class VI (per API 598) |
The valve's compact design and robust construction allow it to be installed in tight spaces while maintaining full functionality. It is suitable for use in both horizontal and vertical pipelines, and the flanged connections simplify installation and alignment. The PTFE seal is replaced easily without special tools, keeping maintenance costs low.
Trusted Quality and Global Reach
Since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd has been dedicated to manufacturing high-quality valves for industrial applications. Our commitment to quality is backed by ISO9001 certification, ensuring that every valve undergoes rigorous testing and inspection. With an annual export value of US$1 million to US$1.5 million, our products have been shipped to markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and other regions. We ship from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery worldwide.
Our team of experienced engineers and technicians can customize the valve to meet specific requirements, including different pressure ratings, end connections, actuator types, and special coatings. We also offer technical support and after-sales service to ensure trouble-free operation. Choose our GB/T1850 Quick Closing Valve for a reliable, long-lasting solution that meets your most demanding applications.
Frequently Asked Questions (FAQ)
Q1: What media can this valve be used with?
A: The valve is suitable for clean gases, liquids, and steam that are compatible with carbon steel and PTFE. Avoid abrasive or corrosive media beyond the material limits. For aggressive chemicals, optional stainless steel body or special seal materials are available.
Q2: What is the maximum operating temperature?
A: Standard PTFE seal can handle up to 200°C (392°F). For higher temperatures, optional seals such as graphite or PEEK can be supplied.
Q3: Can the valve be installed in any orientation?
A: Yes, the valve can be installed in horizontal or vertical pipelines. However, for optimal performance and ease of maintenance, horizontal installation is recommended.
Q4: Is this valve suitable for emergency shutdown (ESD) systems?
A: Absolutely. The quick closing mechanism is designed for rapid action (typically
Q5: Do you provide test certificates?
A: Yes, we provide material certificates, hydrostatic test reports, and leakage test reports as per GB/T1850 and API 598 standards. Additional third-party inspection is available upon request.
Q6: What is the lead time for this valve?
A: Standard lead time is 15-25 working days, depending on quantity and customization. We can expedite orders for urgent projects.
Q7: Can the flanged connection be customized to other standards?
A: Yes, we can machine flanges to ANSI, DIN, JIS, or other standards as per your request. Please specify the required standard at the time of order.
Q8: What is the warranty period?
A: We offer a standard 12-month warranty from the date of shipment against manufacturing defects. Extended warranty options are available.
Contact us today to discuss your specific requirements or to request a quotation. Our team is ready to provide professional solutions for your valve needs.
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