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Home > Industrial Equipment & Components > Valve > Butterfly Valve > Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage

Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage

Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage thumbnail-3

Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage thumbnail-4

Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage thumbnail-5

Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage photo-1

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Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage photo-3

Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage photo-4

Wafer Type Butterfly Valve DN50-DN300 Cast Iron Body NBR Seal for Marine Sewage photo-5

Product Spotlights

Durable cast iron wafer butterfly valve with NBR seal, designed for reliable on/off control in marine sewage lines. Offers sizes DN50-DN300, compact design for easy installation, bi-directional sealing, and low maintenance. Ideal for shipbuilders seeking a cost-effective, long-lasting solution for wastewater handling.

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

Key Specifications

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Application:

Other, Marine Sewage Systems

Body Material:

Cast Iron

Seal Material:

NBR (Nitrile Rubber)

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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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Application Other, Marine Sewage Systems

Body Material Cast Iron

Seal Material NBR (Nitrile Rubber)

Connection Type Wafer Type

Size Range DN50 to DN300

Product Type Butterfly Valve

Operation Lever/Gear Operated (Optional)

Design Standard Available upon request

Pressure Rating Customizable

As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing reliable and durable fluid control solutions for demanding industrial and marine applications. Our Wafer Type Butterfly Valve, designed specifically for marine sewage systems, represents our commitment to engineering excellence and customer satisfaction. Engineered with a robust cast iron body and a high-performance NBR seal, this valve ensures long-lasting, leak-proof operation in corrosive and abrasive environments, offering a cost-effective and low-maintenance solution for shipbuilders and marine engineers worldwide.

This valve series is meticulously crafted to meet the rigorous demands of onboard sewage handling. The compact wafer design allows for easy installation between pipe flanges, saving significant space and weight – a critical advantage in marine construction. Below is a detailed overview of its key features, technical specifications, and the tangible benefits it delivers to your operations.

Core Features & Technical Advantages:

Superior Durability: The cast iron body provides exceptional strength and resistance to deformation under pressure and mechanical stress, ensuring a long service life even in harsh marine conditions.
Excellent Sealing Performance: The Nitrile Butadiene Rubber (NBR) disc seal is specifically chosen for its outstanding resistance to sewage, wastewater, oils, and a wide range of chemicals commonly found in marine environments, guaranteeing a bubble-tight shut-off.
Compact & Lightweight Design: The wafer-style construction eliminates the need for additional flange bolts on the valve itself, resulting in a lighter and more space-efficient assembly compared to lug-type or flanged valves.
Bi-Directional Flow Capability: The valve is designed to seal effectively against flow from either direction, providing flexibility in pipeline layout and installation.
Low Torque Operation: The precision-machined disc and stem assembly ensures smooth 90-degree rotation from fully open to fully closed, reducing the effort required for manual operation or the size of the required actuator.
Easy Maintenance: The simple design features minimal moving parts. The seal can often be replaced without removing the valve body from the pipeline, drastically reducing downtime and maintenance costs.

Detailed Technical Specifications:

Parameter	Specification
Valve Type	Wafer Style Butterfly Valve
Body Material	Cast Iron (GG25/GGG40)
Disc Material	Ductile Iron / Coated Cast Iron (Optional)
Stem Material	Stainless Steel (SS304/SS416)
Seat / Seal Material	NBR (Standard), EPDM, Viton® (Optional)
Size Range (Nominal Diameter)	DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300
Pressure Class	PN10 / PN16 (Customizable)
Temperature Range	-10°C to +80°C (for NBR seal)
Operation	Lever Handle (Standard), Gearbox, Pneumatic/Hydraulic Actuator (Optional)
End Connection	Wafer (Fits between ANSI/DIN/JIS standard flanges)
Application	Marine Sewage Lines, Wastewater Treatment, Slurry Handling, Industrial Water

Benefits for Your Marine Project:

Enhanced System Reliability: Minimizes the risk of leaks and failures in critical sewage lines, ensuring environmental compliance and operational safety at sea.
Reduced Lifetime Cost: The combination of durable materials and low maintenance requirements leads to a lower total cost of ownership.
Simplified Inventory: A single valve type covering DN50 to DN300 simplifies procurement and spare parts management for shipyards and fleet operators.
Global Compatibility: Designed to fit between international standard pipe flanges, facilitating integration into both new builds and retrofit projects worldwide.

Frequently Asked Questions (FAQ):

Q: Is this valve suitable for seawater applications?
A: While the cast iron body and NBR seal are resistant to many marine conditions, for direct seawater service, we recommend discussing optional materials like epoxy-coated bodies or different seal compounds (e.g., EPDM for better seawater resistance) with our technical team.
Q: Can this valve be automated?
A: Absolutely. This wafer butterfly valve is designed to be easily fitted with pneumatic (on/off or modulating) or electric actuators. Please specify your automation requirements for a tailored solution.
Q: What is the lead time for an order of DN200 valves?
A: Lead times vary based on order quantity and specification. For standard DN200 valves with lever operation, we typically maintain stock for prompt shipment. Contact us for an accurate delivery schedule.
Q: Do you provide documentation like test reports or material certificates?
A: Yes, as an ISO9001 certified manufacturer, we can provide standard inspection reports. Detailed material test certificates (MTC) are available upon request.
Q: How does the wafer design differ from a lug-type butterfly valve?
A: A wafer valve is installed by clamping it between two pipe flanges with through-bolts. A lug-type valve has threaded inserts (lugs) allowing it to be bolted directly to each flange end, which can be beneficial for end-of-line applications. The wafer type is generally more compact and cost-effective for inline use.
Q: What maintenance is required for these valves?
A: Routine maintenance is minimal. We recommend periodic visual inspection and operational checks. The resilient seat may require replacement after extended service, which can often be done without removing the valve body.
Q: From which ports do you ship?
A: We ship regularly from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring flexible and efficient logistics to global destinations.
Q: Are your valves compliant with specific marine classification society rules?
A> We can manufacture valves to meet the general requirements of various marine applications. For valves requiring specific classification society approvals (like DNV-GL, ABS, LR), please consult with us during the inquiry stage as these are typically project-specific.

Backed by our ISO9001 quality management system and an annual export value ranging between US$1 Million to US$1.5 Million, Shanghai Zhibang has established a strong reputation for reliability across diverse markets including North and South America, Europe, Asia, Africa, and Oceania. Our valves are trusted in marine sewage systems worldwide because they are built to last and perform under pressure. Choosing our Wafer Type Butterfly Valve means investing in a product backed by rigorous manufacturing standards and a company dedicated to global customer support. Contact us today to discuss your specific requirements, request a detailed quotation, or learn more about how our solutions can enhance the efficiency and reliability of your marine projects.

Product Tags: Wafer Butterfly Valve , Cast Iron Butterfly Valve , Marine Sewage Valve