Contact Platform Support
Help CenterIndustrial Pump Inlet Protection Valve, GB/T1855-1993 Suction Stop Check Box Design
Product Spotlights
Related Products
-
CB/T590 Marine Globe Valve For Fuel Oil Systems, Cast Steel Body, Flanged End DN15-DN100NegotiableMOQ: 1 Unit -
PN1.0MPa DN200 Cast Iron Flanged Valve for Bilge Pump Suction Lines, Stop-Check TypeNegotiableMOQ: 1 Unit
-
CB/T590 Fuel Oil Globe Valve, Carbon Steel Construction, PN1.6MPa Pressure RatingNegotiableMOQ: 1 Unit
-
DN50-DN200 Flanged Suction Stop Check Box Valve, Cast Iron Body, PN1.0MPa Pressure RatingNegotiableMOQ: 1 Unit
-
GB/T1855-1993 Suction Stop Check Box Valve With Mill Test Report and WarrantyNegotiableMOQ: 1 Unit
As a specialized manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Industrial Pump Inlet Protection Valve, engineered to the GB/T1855-1993 standard. Designed specifically for critical pump suction applications, this valve is a cornerstone for system safety and efficiency, preventing costly damage from reverse flow and water hammer. With over eight years of expertise and a global footprint across North America, Southeast Asia, Europe, and beyond, we deliver reliable, high-performance valve solutions trusted in diverse industrial environments.
Our Suction Stop Check Box Design valve is meticulously crafted to offer superior protection at the pump inlet. Its primary role is to allow forward flow to the pump while automatically sealing to prevent any reverse flow when the pump stops. This crucial function safeguards pumps from potential damage caused by backflow, ensuring operational continuity and reducing maintenance costs.
Key Features & Technical Advantages:
- Robust Construction: Manufactured from high-grade materials such as ductile iron or cast steel, with stainless steel components available for corrosive environments, ensuring long service life.
- Automatic, Fail-Safe Operation: The internal check mechanism closes automatically by gravity and flow pressure when forward flow ceases, requiring no external power or control.
- Optimized for Pump Protection: Specifically designed for suction service, it minimizes pressure loss and helps prevent cavitation, contributing to pump efficiency.
- Low Maintenance Design: Simple, durable construction with minimal moving parts reduces the need for frequent servicing and associated downtime.
- Versatile Configuration: Available in a wide range of sizes and pressure ratings to match various pump specifications and system requirements.
Detailed Technical Specifications:
| Parameter | Specification / Options |
| Product Standard | GB/T1855-1993 (Suction Stop Check Box Design) |
| Common Nominal Diameter (DN) | 50, 80, 100, 150, 200, 250, 300, 350, 400, 500 |
| Pressure Rating (PN) | PN10, PN16, PN25, PN40 (Customizable) |
| Main Body Material | Ductile Iron, Cast Steel, Stainless Steel (Optional) |
| Disc & Seat Material | Bronze, Stainless Steel, Rubber Coated (Depending on model) |
| Connection Type | Flanged (Standard as per GB/T), Other ends available upon request |
| Operating Temperature | -20°C to +120°C (Standard), Higher grades customizable |
| Applicable Media | Water, Oil, General Liquids, Mild Corrosive Fluids (Material dependent) |
Benefits for Your Operations:
- Enhanced System Safety: Eliminates the risk of reverse rotation and water hammer, protecting your valuable pump assets.
- Operational Cost Savings: Prevents unexpected pump failures, reducing repair costs and unplanned downtime.
- Improved Process Reliability: Ensures consistent forward flow to the pump, supporting stable system performance.
- Easy Integration: Designed to comply with common industrial standards, facilitating straightforward installation into existing piping.
- Global Compliance: Manufactured under an ISO9001 certified quality management system, ensuring consistent product quality and traceability.
Backed by an annual export value demonstrating consistent global demand, Shanghai Zhibang has established itself as a reliable partner for industrial valve solutions. Our valves are shipped from major ports including Shanghai, Guangzhou, and Hong Kong, ensuring efficient logistics to your site. Choosing our GB/T1855-1993 Industrial Pump Inlet Protection Valve means investing in a product proven across continents—from the demanding markets of North America and Europe to the growing industries of Southeast Asia and Africa. Its robust design translates directly into reduced operational risk and long-term reliability. Contact us today to discuss how this essential component can fortify your pumping systems and contribute to your bottom line.
Frequently Asked Questions (FAQ):
Q1: What is the main purpose of this valve on a pump inlet?
A1: Its primary purpose is to act as a one-way check valve specifically at the suction side. It allows fluid to enter the pump but automatically closes to prevent any backflow when the pump stops, protecting the pump from damage.
Q2: How does the "Suction Stop Check Box Design" differ from a standard check valve?
A2: This design is optimized for pump suction service. It typically features a streamlined flow path to minimize pressure drop and is engineered to operate reliably under the specific conditions found on the inlet side of a pump, helping to prevent issues like cavitation.
Q3: Can this valve be used with fluids other than water?
A3: Yes, it can handle various general liquids like oil. The specific compatible media depends on the selected construction materials (e.g., cast steel, stainless steel). Please consult with our team regarding your specific fluid properties.
Q4: What pressure classes (PN) are typically available?
A4: We commonly supply valves in pressure ratings from PN10 to PN40. For requirements outside this standard range, custom manufacturing options are available upon request.
Q5: Is the valve suitable for vertical pipe installation?
A5: The standard gravity-operated design is typically intended for horizontal installation to ensure proper disc closure. For vertical installation, specific design considerations or alternative models may be required. Please provide your installation details for a precise recommendation.
Q6: What is the lead time for standard sizes?
A6: For standard DN sizes and common pressure ratings, we generally maintain stock or short production cycles. The exact lead time will be confirmed upon order, considering specifications and quantity.
Q7: Do you provide customization for non-standard flanges or materials?
A7: Absolutely. As a manufacturer, we offer customization options including special flange standards (ANSI, JIS, etc.), alternative materials like stainless steel for corrosive service, and special coatings. Contact us with your requirements.
Q8: What after-sales support do you offer?
A8: We provide technical documentation, installation guidance, and spare parts support. Our quality management under ISO9001 ensures we stand behind our products.
Send Inquiry to This Supplier
You May Also Like
-
Suction Stop Check Box Valve for Shipboard Firefighting Pump Systems, Cast Iron ConstructionNegotiableMOQ: 1 Unit
-
Marine Fuel Oil Globe Valve Compliant With CB/T590 Standard, DNV Type ApprovalNegotiableMOQ: 1 Unit
-
Standard Compliant Marine Valve With Flanged Ends, Includes Technical DocumentationNegotiableMOQ: 1 Unit
-
CB/T590 Marine Globe Valve for Main Engine Fuel Oil Supply and Return SystemsNegotiableMOQ: 1 Unit
-
CB/T590 Globe Valve for Ship Fuel Oil Lines, Flanged Connection, DN50-DN200 SizesNegotiableMOQ: 1 Unit
-
Fuel Oil Service Globe Valve, CB/T590 Design, Carbon Steel Body With Stellite TrimNegotiableMOQ: 1 Unit
-
CB/T590 Fuel Oil Globe Valve, Factory Direct With Technical Support and WarrantyNegotiableMOQ: 1 Unit
-
CB/T590 Marine Globe Valve Supplied With Full Material Mill Test ReportNegotiableMOQ: 1 Unit
-
CB/T590 Standard Marine Globe Valve for Steam Systems, Carbon Steel Body, Bolted Bonnet, PN16NegotiableMOQ: 1 Unit
-
CB/T590 Regulating Globe Valve for Marine Fuel Oil Supply, PN4.0MPa Pressure ClassNegotiableMOQ: 1 Unit
