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Help CenterCB/T3591-2005 Gate Valve for Onboard Ballast and Bilge Systems, Manual Handwheel
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As a professional valve manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to introduce our high-performance CB/T3591-2005 Gate Valve, specifically engineered for demanding marine applications. Established in 2016 and serving a global clientele across five continents, we understand the critical need for reliability in onboard systems. This manual handwheel-operated gate valve is designed to deliver precise and secure flow control for ballast and bilge systems, ensuring vessel safety and operational efficiency. Its robust construction and adherence to the stringent CB/T3591-2005 standard make it a dependable choice for shipbuilders and marine engineers worldwide.
This valve is built to withstand the harsh marine environment. Key features and benefits include:
- Full-Bore Design: Provides minimal flow resistance and pressure drop, allowing for efficient pumping of ballast water and bilge fluids.
- Robust Construction: Manufactured from durable materials like cast steel or cast iron for the body, with corrosion-resistant trim (e.g., bronze or stainless steel seats), ensuring long service life even in saline conditions.
- Manual Handwheel Operation: Offers simple, direct, and reliable control without the need for external power sources, which is crucial for fail-safe operations onboard.
- Bidirectional Sealing: Effective sealing in both flow directions, providing versatility in system piping layouts.
- Easy Maintenance: The design often allows for in-line maintenance or repair, minimizing downtime for vessels.
Below is a summary of typical technical specifications. Custom configurations for materials, pressure ratings, and flange standards are available upon request to meet specific project requirements.
| Parameter | Specification / Option |
|---|---|
| Design & Manufacturing Standard | CB/T3591-2005 |
| Nominal Pressure (PN) | PN10, PN16, PN25 |
| Nominal Diameter (DN) | DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500 |
| Body Material | Cast Steel (WCB), Cast Iron (HT200/250), Ductile Iron |
| Disc/Seat Material | Bronze, Stainless Steel (304/316), Monel (optional) |
| Stem Material | Stainless Steel (2Cr13, 304) |
| Connection Type | Flanged (GB, ANSI, JIS, DIN standards customizable) |
| Operation Mode | Manual Handwheel (Rising Stem or Non-Rising Stem) |
| Applicable Medium | Sea Water, Bilge Water, Ballast Water, Oil (compatible material dependent) |
| Temperature Range | -20°C to +425°C (material dependent) |
The primary advantage of choosing our gate valve lies in its proven reliability and safety. For ballast systems, precise control is vital for ship stability, and for bilge systems, leak-tight shut-off is essential to prevent flooding. Our valve's design ensures these functions are performed consistently. Furthermore, the manual operation eliminates dependencies on shipboard power, making it a critical component for emergency scenarios. By opting for a valve manufactured to the CB/T standard, you are investing in a component recognized and trusted in the global maritime industry.
With an annual export value ranging between US$1 Million and US$1.5 Million and a presence in markets from North America and Western Europe to Southeast Asia and Africa, Shanghai Zhibang has demonstrated its capability to meet diverse international standards and client expectations. Our ISO9001 certified quality management system underpins every stage of production, from material sourcing to final testing. We support flexible shipment from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery. For your next marine project requiring dependable flow control solutions, consider our CB/T3591-2005 Gate Valve—a product where quality, compliance, and performance converge. Contact us today for a quotation or to discuss your specific requirements.
Frequently Asked Questions (FAQ)
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Q: What does the "CB/T3591-2005" standard signify for this valve?
A: CB/T3591-2005 is a Chinese national professional standard specifically for marine valves. It defines the design, material, manufacturing, testing, and inspection requirements for gate valves used in ship piping systems, ensuring they meet the safety and performance demands of maritime applications. -
Q: Is this valve suitable for both fresh water and seawater applications?
A: Yes, it is designed for marine environments. However, the specific material selection (e.g., choosing bronze or stainless steel for wetted parts) is crucial for seawater service to resist corrosion. Please specify the medium during inquiry for correct material recommendation. -
Q: Can the handwheel be replaced with a gearbox or actuator for remote operation?
A: The standard product is manual handwheel operation. However, modifications for fitting a gear operator or mounting pads for pneumatic/electric actuators are often available as optional features. Please inquire about customization. -
Q: What flange standards do you offer?
A: We can manufacture valves with flanges conforming to various international standards such as GB (Chinese), ANSI (American), JIS (Japanese), and DIN (German). The standard offering can be confirmed, and other standards are customizable upon request. -
Q: What is the lead time for an order of these valves?
A: Lead time depends on order quantity, specification complexity, and material availability. Standard specifications typically have shorter lead times. We provide estimated delivery schedules upon receipt of your detailed inquiry or order. -
Q: Do you provide pressure test certificates and material certificates with the valves?
A> Yes, as an ISO9001 certified manufacturer, we conduct routine hydrostatic shell and seat tests. Relevant test reports and material certificates (Mill Test Certificates) can be provided upon request, which is a common practice in B2B marine transactions. -
Q: How does this gate valve compare to a globe valve for bilge system use?
A: Gate valves are generally preferred for on/off service in pipelines where minimal flow restriction is needed (full-bore). They offer lower pressure drop compared to globe valves. For bilge systems requiring full flow during pumping, a gate valve is often the suitable choice. -
Q: What maintenance is required for this manual gate valve?
A: Maintenance is relatively simple. It primarily involves periodic inspection for external corrosion, ensuring the handwheel operates smoothly, and repacking the stem gland if a leak is observed. The robust design aims for long maintenance intervals under normal service conditions.
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