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Home > Industrial Equipment & Components > Valve > Check Valve > GB/T1855-1993 Standard Cast Iron Suction Stop Check Box Valve for Marine Pump Protection
GB/T1855-1993 Standard Cast Iron Suction Stop Check Box Valve for Marine Pump Protection
Product Spotlights
Dual-function GB/T1855-1993 standard valve combining automatic check and manual stop for marine pump protection. Features robust cast iron construction, flanged connections, and customizable seal options (NBR/EPDM/Viton). Enhances system safety, allows isolated maintenance, saves space, and offers reliable performance backed by ISO9001 certified manufacturing. Custom sizes and pressures available.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Cast Iron
Standard:
Other, GB/T1855-1993
Application:
Other, Marine Pump Protection Systems
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Cast Iron
Standard
Other, GB/T1855-1993
Application
Other, Marine Pump Protection Systems
Valve Type
Suction Stop Check Box Valve
Connection Type
Flanged (Standard)
Seal Material
Optional: NBR, EPDM, Viton
Pressure Rating
Available upon request
Size Range
Customizable
Operation
Automatic check, manual stop
As a professional manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance Cast Iron Suction Stop Check Box Valve, designed specifically for demanding marine pump protection applications. Engineered to the GB/T1855-1993 standard, this valve combines reliability with robust construction, ensuring critical systems remain safeguarded against backflow and pressure surges. Our decade of experience since 2016 in serving global markets, including North America, Southeast Asia, and Europe, is built into every valve we produce, offering you a dependable solution from a trusted partner.
This specialized valve serves a dual function: it acts as an automatic check valve to prevent reverse flow, while also incorporating a manual stop feature for complete isolation when needed. This is crucial for marine environments where pump maintenance or system segmentation is required without compromising the entire pipeline's integrity.
Core Product Features & Technical Advantages:
- Dual-Function Design: Integrates non-return check valve functionality with a positive shut-off isolation valve, simplifying system layout and enhancing operational control.
- Robust Cast Iron Construction: Provides excellent corrosion resistance and mechanical strength, ideal for handling seawater, ballast, bilge, and other marine fluids.
- Standard Compliance: Manufactured in strict accordance with the Chinese National Standard GB/T1855-1993, ensuring dimensional interchangeability, performance reliability, and quality consistency.
- Reliable Sealing: Available with various seal materials (such as NBR, EPDM, or Viton) to match specific fluid compatibility and temperature requirements.
- Flanged Connections: Standard flanged ends facilitate secure and leak-free installation into existing marine piping systems.
- Low Maintenance: Simple internal mechanism designed for long service life with minimal intervention, reducing total cost of ownership.
Detailed Technical Specifications:
| Parameter | Description / Specification |
| Product Standard | GB/T1855-1993 |
| Primary Material | Cast Iron |
| Valve Type | Suction Stop Check Box Valve |
| Main Application | Marine Pump Protection (Bilge, Ballast, Fire, Cooling Systems) |
| Connection Standard | Flanged (Dimensions per GB Standard) |
| Operation | Automatic Check (Flow-Dependent) / Manual Stop (Positive Isolation) |
| Seal Options | NBR, EPDM, Viton (Customizable) |
| Pressure & Size | Available upon request to suit specific project requirements |
Benefits for Your Marine Operations:
- Enhanced System Safety: Prevents damaging backflow to pumps, protecting critical marine machinery from failure.
- Operational Flexibility: The integrated stop feature allows for safe isolation of a single pump for maintenance without draining the entire line.
- Reduced Installation Footprint: Combines two valve functions into one unit, saving space in crowded engine rooms and pump rooms.
- Global Compliance & Compatibility: Adherence to GB/T1855-1993 ensures the valve meets recognized specifications for many international marine projects.
- Cost-Effective Solution: Durable cast iron construction and low maintenance design lead to a favorable lifecycle cost.
Shanghai Zhibang's commitment to quality is underscored by our ISO9001 certification and a track record of exporting US$1-1.5 million annually to diverse markets worldwide. Our valves are shipped efficiently from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. When you choose this GB/T1855-1993 Standard Valve, you are not just purchasing a component; you are investing in reliability backed by a manufacturer with proven expertise in serving the global marine industry. Contact us today to discuss your specific requirements and experience the Zhibang difference in valve performance and service.
Frequently Asked Questions (FAQ):
-
Q: What is the primary purpose of a "Stop Check Box Valve" in marine applications?
A: It serves two key purposes: firstly, as a check valve to automatically prevent reverse flow (backflow) into the pump, which can cause damage. Secondly, it incorporates a manual shut-off (stop) mechanism to positively isolate the pump for maintenance or repair, offering greater control than a standard check valve alone. -
Q: How does the GB/T1855-1993 standard benefit me as an international buyer?
A: This Chinese national standard specifies dimensions, materials, pressure ratings, and testing methods. Using a valve built to this standard ensures predictable performance, dimensional compatibility with other GB-standard fittings, and a verified level of quality and safety, which is often recognized or required in many international procurement specifications. -
Q: Is cast iron suitable for handling seawater?
A: Yes, cast iron offers good general corrosion resistance and is a cost-effective, durable material commonly used for marine valves handling seawater, ballast, and other non-potable water services. For specific highly corrosive media, alternative material options can be discussed. -
Q: Can I get this valve in sizes and pressure classes not listed?
A: Absolutely. As a manufacturer, we specialize in customization. Please provide your required nominal size (DN), pressure rating (PN), and any other specific parameters, and we can engineer a valve to meet your exact project specifications. -
Q: What are the available sealing material options and how do I choose?
A: We typically offer seals in NBR (Nitrile), EPDM, and Viton (FKM). The choice depends on the fluid type and temperature:
- NBR: Good for oils and water at moderate temperatures.
- EPDM: Excellent for hot water, steam, and certain chemicals.
- Viton: Superior resistance to fuels, oils, and high temperatures. Our team can advise based on your application details. -
Q: What is the typical lead time for an order?
A: Lead time varies based on order quantity, size, and customization level. For standard configurations, we often maintain some inventory. For custom orders, production time will be provided upon receipt of your detailed inquiry. Our multiple shipping port options help expedite delivery. -
Q: Do you provide documentation like test reports or certificates?
A: Yes, we can provide standard documentation including material certificates and factory test reports (e.g., shell test, seat test) as per the GB/T1855-1993 requirements. Specific certification needs should be stated during the inquiry phase. -
Q: What after-sales support do you offer?
A: We provide technical support for installation and operation. While the valve is designed for low maintenance, we can supply spare parts kits (like seals) upon request to ensure long-term operational readiness.
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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