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Marine Suction Stop Check Valve With Combined Stop and Check Function, GB/T1855-1993 Compliant
Product Spotlights
Integrates stop and check functions into one robust unit, saving space, weight, and cost in marine piping systems. Manufactured in compliance with GB/T1855-1993 standard for reliable performance and interchangeability. Constructed from durable materials like cast steel or stainless steel to withstand harsh marine environments. Available in a wide size range (DN50-DN500) and optional actuation for flexible integration. Backed by ISO9001-certified production from an established manufacturer serving global markets.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Cast Steel or Stainless Steel
Application:
Other, Marine shipbuilding
Function:
Other, Combined stop and check operation
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Cast Steel or Stainless Steel
Application
Other, Marine shipbuilding
Function
Other, Combined stop and check operation
Size Range
DN50 to DN500, customizable
Connection Type
Flanged, GB/T standard
Pressure Rating
PN10 to PN40, depending on model
Standard Compliance
GB/T1855-1993
Operation Mode
Manual or actuator optional
Certification
ISO9001 Quality Management System
As a professional manufacturer with a focus on marine and industrial valve solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance Marine Suction Stop Check Valve. Engineered to meet the rigorous demands of shipbuilding and offshore applications, this valve integrates a reliable stop function with an efficient check mechanism, providing a compact and robust solution for critical fluid control systems. With our ISO9001-certified production processes and a commitment to GB/T1855-1993 standards, we ensure each valve delivers dependable performance, enhancing system safety and operational efficiency for our global clients across diverse maritime sectors.
The core design of this valve addresses the need for both flow isolation and prevention of backflow in suction lines. Its combined functionality eliminates the need for separate valves, simplifying piping layouts, reducing installation points, and lowering overall system weight and cost. This is particularly advantageous in marine environments where space optimization and reliability are paramount.
Key Technical Features & Specifications:
- Dual-Function Design: Acts as a stop valve to completely shut off flow when required, and simultaneously functions as a check valve to automatically prevent reverse flow, protecting pumps and upstream equipment.
- Rugged Construction: Typically manufactured from high-grade cast steel or corrosion-resistant stainless steel options to withstand harsh marine conditions, including saltwater exposure and variable pressures.
- Standard Compliance: Designed and produced in strict accordance with the Chinese national standard GB/T1855-1993, ensuring dimensional compatibility, performance benchmarks, and interchangeability within standardized piping systems.
- Flexible Configuration: Available in a wide range of sizes to suit different pipeline diameters. Operational modes can be customized from standard manual handwheel operation to automated actuation (electric or pneumatic) for integration into controlled systems.
- Enhanced Sealing: Features precision-machined sealing surfaces and durable sealing elements to maintain a tight seal in both the closed (stop) position and during check valve operation, minimizing leakage.
Detailed Parameter Table (Common Models):
| Parameter | Specification / Range | Notes |
|---|---|---|
| Nominal Diameter (DN) | 50, 80, 100, 150, 200, 250, 300, 350, 400, 500 | Other sizes available upon request |
| Pressure Rating (PN) | 10, 16, 25, 40 | Corresponding to applicable pressure classes |
| Connection Standard | Flanged, GB/T | Ensures easy integration with standard piping |
| Main Material | Cast Steel (WCB), Stainless Steel (304/316) | Material selection based on corrosion requirements |
| Operation Temperature | -20°C to +200°C (depending on material) | Suitable for various fluid temperatures |
| Seat Type | Metal-to-metal or soft seat optional | Customizable for specific sealing needs |
Advantages & Client Benefits:
- Space & Cost Savings: The integrated design reduces the number of required valves, fittings, and associated support structures, leading to more compact installations and lower material and labor costs.
- System Reliability: By combining two critical functions into one robust unit, potential failure points are reduced. The valve's compliance with GB/T1855-1993 guarantees predictable performance and longevity.
- Operational Safety: Provides secure flow isolation for maintenance or emergency shutdowns, while its check function automatically prevents damaging backflow, protecting expensive pumps and system integrity.
- Ease of Maintenance: Designed for accessibility, with many models allowing for in-line maintenance or component replacement without removing the entire valve body from the pipeline.
- Global Compatibility: Supplied from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, facilitating smooth logistics to our main markets including North America, Europe, Southeast Asia, Africa, and beyond.
Shanghai Zhibang Valve, established in 2016, has rapidly grown into a trusted supplier with an annual export value ranging between US$1 Million and US$1.5 Million. Our ISO9001 certification underpins a consistent quality management system for every valve we produce. This Marine Suction Stop Check Valve embodies our expertise in serving diverse international markets—from Northern Europe to Oceania, and the Domestic Market. By choosing our GB/T1855-1993 compliant valve, you gain not just a product, but a reliable component backed by a manufacturer dedicated to precision, durability, and customer satisfaction. Contact us today to discuss how this valve can optimize your marine fluid system.
Frequently Asked Questions (FAQ):
-
Q: What is the primary advantage of a combined stop and check valve over using two separate valves?
A: The main advantage is system simplification. It reduces installation points, saves space, lowers weight, decreases potential leak paths, and can reduce overall procurement and installation costs. -
Q: Can this valve be used in applications other than marine suction lines?
A: While specifically designed for marine suction applications, its robust construction and dual functionality make it suitable for other industrial processes requiring combined flow isolation and backflow prevention, such as in certain power plant or chemical plant auxiliary systems. -
Q: How does the check function operate within this valve?
A: The check function is typically integrated into the valve disc or closure mechanism. When forward flow pressure drops or reverses, the internal mechanism automatically closes the passage, preventing backflow without requiring manual intervention. -
Q: Are actuators available for remote operation?
A: Yes, actuation is an optional feature. We can provide valves equipped with electric or pneumatic actuators for integration into automated control systems, allowing for remote opening, closing, and status monitoring. -
Q: What materials are recommended for highly corrosive seawater environments?
A: For severe corrosion conditions, we recommend stainless steel options such as 316 or 316L. Cast steel with appropriate protective coatings can also be considered for less aggressive environments. -
Q: Does compliance with GB/T1855-1993 ensure compatibility with international flange standards?
A: GB/T1855-1993 is a Chinese national standard. While it ensures compatibility within systems using GB/T flanges, the flange dimensions may differ from other international standards like ANSI or DIN. It is important to verify flange compatibility for your specific piping system. We can discuss customization if needed. -
Q: What is the typical delivery lead time for standard sizes?
A> Lead times vary based on order quantity, material selection, and customization. For standard models in common sizes and materials, we typically aim for delivery within 4-6 weeks after order confirmation. -
Q: What support does your ISO9001 certification provide to buyers?
A> Our ISO9001 certification signifies a structured quality management system throughout design, manufacturing, testing, and delivery. It provides buyers with confidence in consistent product quality, traceable processes, and a framework for continuous improvement.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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