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Home > Industrial Equipment & Components > Valve > Gate Valve > Marine Sewage System Gate Valve, GB/T Standard, Cast Iron Body With Epoxy Coating

Marine Sewage System Gate Valve, GB/T Standard, Cast Iron Body With Epoxy Coating

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Product Spotlights

Designed for marine sewage systems, this gate valve features a durable cast iron body with protective epoxy coating for superior corrosion resistance. Compliant with GB/T standards, it ensures reliable sealing, easy operation, and long service life in harsh saltwater environments. Ideal for shipbuilders and operators seeking a cost-effective, dependable component for black and grey water management.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Standard:

Other, GB/T Standard

Application:

Other, Marine Sewage Systems

Product Type:

Gate Valve for Sewage System

Contact Supplier Request Quote Chat Now

Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Standard Other, GB/T Standard

Application Other, Marine Sewage Systems

Product Type Gate Valve for Sewage System

Body Material Cast Iron with Epoxy Coating

Connection Type Flanged (Common)

Operation Type Handwheel Operated

Pressure Rating PN10/PN16 (Typical)

Temperature Range Suitable for ambient to moderate temperatures

Coating/Finish Epoxy Coating for Corrosion Resistance

As a professional manufacturer with years of experience in fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine Sewage System Gate Valve. Engineered to meet the rigorous demands of maritime applications, this valve is designed for reliable isolation and control in shipboard sewage systems. Built with a robust cast iron body and protected by a durable epoxy coating, it offers exceptional resistance to corrosive elements commonly found in marine environments. Adhering to the GB/T standard, our valve ensures compatibility and performance reliability for shipbuilders and vessel operators worldwide.

The core value of this gate valve lies in its durability and dependable sealing performance, which are critical for maintaining sanitary conditions and preventing leaks in sensitive marine sewage pipelines. Its design prioritizes ease of operation and long service life, even under challenging conditions, making it a trusted component for ensuring environmental compliance and operational safety on vessels.

Key Features and Technical Advantages:

Superior Corrosion Protection: The cast iron valve body is coated with a high-quality epoxy layer. This coating provides an effective barrier against saltwater, sewage, and other corrosive media, significantly extending the valve's lifespan compared to uncoated alternatives.
Robust Construction for Demanding Service: The gate valve features a sturdy design capable of withstanding the pressures and mechanical stresses typical in marine sewage lines. Its solid wedge or parallel disc design ensures a tight shut-off when closed.
Compliance and Compatibility: Manufactured in accordance with GB/T standards, this valve meets widely recognized specifications for dimensions, pressure ratings, and testing. This guarantees seamless integration into piping systems designed under similar frameworks.
Reliable Sealing Mechanism: Equipped with precision-machined seating surfaces, the valve offers excellent sealing performance to prevent leakage and backflow, which is essential for hygiene and environmental protection onboard.
Easy Operation and Maintenance: The handwheel operation allows for straightforward opening and closing. The design often facilitates maintenance, such as gland packing adjustment, without requiring removal from the pipeline.
Versatile Application Scope: Primarily designed for marine sewage systems, including black water (toilet waste) and grey water (sink/shower waste) lines. It can also be suitable for other onboard seawater or ballast applications where its material compatibility is confirmed.

Technical Specifications Overview:

Parameter	Specification / Description
Valve Type	Rising Stem Gate Valve
Body Material	Cast Iron (GG25/GGG40 equivalent) with Epoxy Coating
Design Standard	GB/T
Nominal Pressure (PN)	PN10, PN16 (Common options, others customizable)
Connection	Flanged ends as per GB/T standard dimensions
Seat & Disc Material	Bronze, Stainless Steel, or other materials upon request
Stem Material	Stainless Steel (common)
Operation	Manual Handwheel

Benefits for Our Clients:

Enhanced System Longevity: The epoxy coating combats corrosion, reducing maintenance frequency and replacement costs over the vessel's lifecycle.
Operational Reliability: Consistent performance ensures the sewage system functions as intended, avoiding blockages or failures that could lead to downtime.
Regulatory Compliance Support: Using valves built to recognized standards like GB/T helps shipowners and shipyards meet various international maritime equipment guidelines.
Cost-Effective Solution: Combining durable cast iron with a protective coating offers a balance of performance and value, providing a reliable component without excessive cost.
Global Supply Chain Compatibility: Our manufacturing and quality processes are structured to support a global clientele, ensuring timely delivery and consistent product quality.

Shanghai Zhibang Valve Manufacture Co., Ltd. stands behind this product with the solid foundation of being an established manufacturer since 2016, holding ISO9001 certification for our quality management system. Our products reach customers across North America, South America, Europe, Asia, Africa, and Oceania, with an annual export value between US$1 Million and US$1.5 Million, demonstrating our international market acceptance and reliability. We ship efficiently from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing. Choosing our Marine Sewage System Gate Valve means selecting a component backed by professional manufacturing expertise, a commitment to quality standards, and a proven track record of serving the global marine industry. Contact us today to discuss your specific requirements or to request a quotation.

Frequently Asked Questions (FAQ)

Q: What is the primary advantage of the epoxy coating on this cast iron gate valve?
A: The epoxy coating acts as a protective shield, significantly enhancing the valve's resistance to corrosion from saltwater, sewage, and other harsh chemicals found in marine environments. This extends the valve's service life and reduces maintenance needs.
Q: Is this valve suitable for both black water and grey water systems on a ship?
A: Yes, it is designed for general sewage applications onboard vessels, which typically include both black water (from toilets) and grey water (from sinks, showers, galleys). Always verify pressure and temperature ratings for your specific system.
Q: How does compliance with the GB/T standard benefit international buyers?
A: The GB/T standard is a comprehensive Chinese national standard widely recognized and often harmonized with other international norms. Compliance ensures predictable dimensions, pressure ratings, and performance, facilitating easier integration into global shipbuilding and repair supply chains.
Q: Can this valve be supplied with different end connections or pressure ratings?
A: While flanged connections per GB/T are standard, other connection types or specific pressure classes (higher than PN16) may be available as a custom order. Please inquire with your specific requirements.
Q: What maintenance does this gate valve typically require?
A: Routine maintenance usually involves occasional operation to prevent seizing and checking/repacking the gland seal if a leak develops at the stem. The epoxy coating minimizes external corrosion-related upkeep.
Q: Does your company provide certifications or test reports for the valves?
A: As an ISO9001 certified manufacturer, we maintain strict quality control. Standard test reports (like shell test, seat test) can be provided upon request. Specific marine classification society certifications would be subject to custom order requirements.
Q: What is the typical lead time for an order of these valves?
A: Lead times vary based on order quantity, specification, and current production schedule. We pride ourselves on efficient logistics and ship from multiple major Chinese ports to ensure timely delivery worldwide.
Q: Are the valves suitable for use with other corrosive media besides marine sewage?
A: The epoxy-coated cast iron construction offers good chemical resistance. However, suitability for other specific corrosive fluids (acids, strong alkalis) should be evaluated case-by-case. Please provide fluid details for a proper material recommendation.