Contact Platform Support
Help CenterStop Check Valve With 12-Month Warranty, Manufactured to GB/T1855 in Stainless Steel
Product Spotlights
Related Products
-
Stop Check Valve for Power Plant Piping, GB/T1855 Stainless Steel, High Temperature RatedNegotiableMOQ: 1 Unit -
GB/T1855 Standard Stop Check Valve With Mill Test Report, Stainless Steel BodyNegotiableMOQ: 1 Unit
-
GB/T1855 Ductile Iron Stop Check Valve, DN50-DN200, PN10, Flanged EndNegotiableMOQ: 1 Unit
-
Ductile Iron Stop Check Valve Compliant With GB/T1855 Standard, PN16 Pressure RatingNegotiableMOQ: 1 Unit
-
GB/T1855 Standard Ductile Iron Valve With Swing Check Design, 200mm SizeNegotiableMOQ: 1 Unit
As a leading manufacturer with ISO9001 certified quality management, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our premium Stainless Steel Stop Check Valve. Engineered to the rigorous GB/T1855 standard and backed by a solid 12-month warranty, this valve is designed for reliability in demanding industrial applications. Our commitment to precision manufacturing, honed since our establishment in 2016, ensures each valve delivers consistent performance, preventing backflow while allowing for positive shut-off when required. This dual-functionality makes it an indispensable component for system safety and efficiency.
This valve is meticulously crafted to offer superior durability and leak-tight sealing. Its robust construction from high-grade stainless steel provides excellent resistance to corrosion, erosion, and a wide range of media, including water, steam, oil, and certain chemicals. The design integrates a check valve's automatic backflow prevention with a stop valve's manual isolation capability, offering operational flexibility and enhanced system protection.
- Dual-Function Design: Combines the non-return action of a check valve with the positive shut-off of a stop valve. This eliminates the need for separate valves in many systems, saving space, reducing installation points, and lowering overall project costs.
- Premium Stainless Steel Construction: Manufactured from grades 304 or 316 stainless steel, offering outstanding resistance to corrosion, pitting, and oxidation. This ensures a long service life even in harsh environments involving water, steam, or mild chemical services.
- GB/T1855 Compliance: Strict adherence to the Chinese national standard GB/T1855 for iron and steel stop-check valves guarantees dimensional interchangeability, performance reliability, and material consistency, providing peace of mind for engineers and specifiers.
- Reliable Sealing Performance: Features a precision-machined seat and disc interface. Options include metal-to-metal seats for high-temperature applications or resilient soft seats (like PTFE) for bubble-tight shut-off in lower temperature services.
- Robust 12-Month Warranty: Our confidence in product quality is backed by a comprehensive 12-month warranty against manufacturing defects, underscoring our commitment to customer satisfaction and product longevity.
- Versatile End Connections: Available with flanged (RF, RTJ), threaded (NPT, BSP), or butt-weld ends to seamlessly integrate into diverse piping configurations, facilitating easy installation and replacement.
The valve's internal mechanism is designed for low-pressure drop and smooth operation. The swing or lift disc responds quickly to flow changes, minimizing water hammer. When the handwheel or actuator is used to close the valve, it provides a positive, leak-tight seal independent of flow direction.
| Parameter | Specification / Range |
| Body Material | Stainless Steel 304 / 316 / Other grades on request |
| Design Standard | GB/T1855 |
| Pressure Rating | PN10, PN16, PN25, PN40 / Class 150, Class 300 |
| Size Range (Nominal Diameter) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300 |
| Temperature Range | -20°C to +200°C (Standard) / Higher temps available |
| End Connection | Flanged (GB, ANSI, JIS, DIN), Threaded, Butt-Weld |
| Seat Type | Metal Seat (Standard), Soft Seat (PTFE/Rubber) Optional |
| Operation | Manual Handwheel, Gear Operator, or Actuated (Optional) |
Benefits for Your Operations: Implementing our stop check valve enhances system integrity by preventing reverse flow that can damage pumps, compressors, and other equipment. Its shut-off capability allows for safe maintenance isolation. The stainless steel body minimizes maintenance needs and replacement frequency, leading to lower total cost of ownership. The standardized design ensures easy sourcing of spare parts and simplifies inventory management for maintenance teams.
With an annual export value ranging between US$1 Million to US$1.5 Million, Shanghai Zhibang Valve has built a strong reputation for quality and reliability across diverse markets including North America, Europe, Southeast Asia, and Africa. Our products are shipped efficiently from major ports like Shanghai, Guangzhou, and Hong Kong. Our ISO9001 certification is a testament to our systematic approach to quality control at every stage of production. When you choose our GB/T1855 Stainless Steel Stop Check Valve, you are not just purchasing a component; you are investing in a solution backed by manufacturing expertise, a proven global track record, and a commitment to supporting your project's success. Contact us today to discuss your specifications and experience the Zhibang difference in fluid control technology.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between a standard check valve and this stop check valve?
A1: A standard check valve only prevents backflow automatically. Our stop check valve adds a manual (or actuated) override feature. You can positively close the valve via its handwheel regardless of flow direction, allowing for isolation of a section of piping for maintenance or system control.
Q2: Can this valve be installed in any orientation?
A2: For optimal performance and to ensure the disc closes properly by gravity, it is recommended to install the valve with the stem vertical or within the orientation guidelines provided in the manual. Horizontal installation is possible for certain designs; please consult our technical team for your specific application.
Q3: Is the 12-month warranty valid globally?
A3: Yes, our 12-month warranty against manufacturing defects is valid for all our customers worldwide. The warranty covers parts and workmanship under normal use conditions as specified in our technical data sheet.
Q4: Do you offer valves in materials other than stainless steel?
A4: While stainless steel (304/316) is our standard offering for this product line due to its wide applicability, we can provide valves in other materials like carbon steel, duplex stainless steel, or special alloys based on customer requirements and project specifications.
Q5: How do I determine the correct pressure rating (PN vs. Class) for my system?
A5: The pressure rating must match or exceed your system's maximum working pressure. PN (Pressure Nominal) is commonly used in metric systems (e.g., Europe, China), while Class (e.g., 150, 300) is used in ANSI systems. Our technical team can help you select the appropriate rating based on your pressure and temperature conditions.
Q6: Are actuators available for automated operation?
A6: Yes. This stop check valve can be fitted with electric, pneumatic, or hydraulic actuators for remote or automated control systems. Actuator selection depends on required torque, power source, and control signals.
Q7: What information do you need to provide a quotation?
A7: To provide an accurate quote, please specify: Nominal Size (DN/NPS), Pressure Rating, Material Grade (e.g., SS304), End Connection Type, Seat Type (metal/soft), and any special requirements like actuator needs or certifications.
Q8: What is the typical lead time for orders?
A8: Lead times vary based on order quantity, specification complexity, and current production schedule. Standard configurations often have shorter lead times. We prioritize communication to provide realistic delivery estimates upon order confirmation.
Send Inquiry to This Supplier
You May Also Like
-
GB/T1855 Stainless Steel Stop Check Valve, Flanged Connection, PN16 Pressure RatingNegotiableMOQ: 1 Unit
-
Standard Ductile Iron Stop Check Valve With Technical Data Sheet, GB/T1855NegotiableMOQ: 1 Unit
-
Precision Machined GB/T1855 Stop Check Valve, Stainless Steel, With Technical Support AvailableNegotiableMOQ: 1 Unit
-
Industrial Ductile Iron Stop Check Valve for Marine Pipeline Systems, GB/T1855NegotiableMOQ: 1 Unit
-
Ductile Iron Stop Check Valve With Mill Test Report, Conforms to GB/T1855NegotiableMOQ: 1 Unit
-
GB/T1855 Valve for Water Supply and Fire Protection Pipelines, Ductile Iron ConstructionNegotiableMOQ: 1 Unit
-
GB/T1855 Compliant Valve With 12-Month Warranty, Epoxy Coated for Corrosion ResistanceNegotiableMOQ: 1 Unit
-
DN80 Cast Iron Stop Check Valve for Marine Applications, GB/T1855 CompliantNegotiableMOQ: 1 Unit
-
GB/T1855 Flanged Stop Check Valve, DN50 to DN200 Size Range for Marine Pump LinesNegotiableMOQ: 1 Unit
-
Cast Steel Marine Stop Check Valve for Pump Protection, Compliant With GB/T1855 StandardNegotiableMOQ: 1 Unit
