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Home > Industrial Equipment & Components > Valve > Other Valves & Parts > Manual Marine Butterfly Valve With Extended Lever Handle for Easy Operation in Tight Engine Rooms

Manual Marine Butterfly Valve With Extended Lever Handle for Easy Operation in Tight Engine Rooms

Manual Marine Butterfly Valve With Extended Lever Handle for Easy Operation in Tight Engine Rooms thumbnail-3

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Manual Marine Butterfly Valve With Extended Lever Handle for Easy Operation in Tight Engine Rooms photo-3

Manual Marine Butterfly Valve With Extended Lever Handle for Easy Operation in Tight Engine Rooms photo-4

Manual Marine Butterfly Valve With Extended Lever Handle for Easy Operation in Tight Engine Rooms photo-5

Product Spotlights

Designed for confined marine engine rooms, this manual butterfly valve features an extended lever handle for easy operation with minimal force. It offers robust, corrosion-resistant construction in various materials (SS316, Bronze, DI) and seat options (EPDM, NBR, Viton) for seawater, fuel, and bilge applications. Provides reliable bubble-tight shutoff, space-saving wafer/lug design, and is backed by ISO9001 certification for global maritime use.

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

Key Specifications

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Material:

Stainless Steel/Ductile Iron/Bronze

Size:

DN50 to DN300 (2“ to 12“)

Connection Type:

Wafer/Lug/Flanged

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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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Material Stainless Steel/Ductile Iron/Bronze

Size DN50 to DN300 (2“ to 12“)

Connection Type Wafer/Lug/Flanged

Seat Material EPDM/NBR/Viton

Disc Material Stainless Steel/Ductile Iron

Operation Type Manual Extended Lever Handle

Application Marine Engine Room, Seawater, Bilge

Pressure Rating PN10/PN16/150LB

Temperature Range -20°C to 120°C

Standard ISO 5752, API 609

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 marine environments. Our Manual Marine Butterfly Valve with Extended Lever Handle is engineered to address the unique challenges of tight engine room spaces, where accessibility and ease of operation are paramount. This valve combines robust construction with a user-centric design, ensuring smooth quarter-turn operation even in confined areas. With an annual export value reflecting our global reach across markets from North America to Southeast Asia, we understand the critical need for equipment that performs consistently under pressure. This valve is a testament to our commitment to quality, certified under ISO9001, and designed for the rigorous demands of marine applications.

Core Features & Design Advantages:

Extended Lever Handle for Ergonomic Operation: The defining feature is the elongated manual lever. It provides significant mechanical advantage, reducing the force required to open or close the valve. This is crucial in tight engine rooms where standard handwheels or short levers are difficult to turn due to limited swing space or awkward positioning.
Compact & Space-Saving Wafer/Lug Design: The valve body is designed to fit between two pipe flanges without the need for additional gaskets on the valve itself (in wafer style), minimizing the overall installation length. The lug-style version allows for dead-end service and easier system isolation.
Robust Construction for Marine Corrosion: We offer a range of material combinations to combat seawater corrosion and marine atmospheres. Common configurations include a stainless steel disc and body with EPDM seats for general seawater, or bronze bodies for specific saltwater applications.
Bubble-Tight Shut-Off: The precision-machined disc and resilient seat material ensure reliable, bubble-tight sealing, essential for controlling critical systems like bilge, cooling water, ballast, and fuel lines.
Simple & Maintenance-Friendly: The design features a simple stem/disc connection and a self-compensating seat, requiring minimal maintenance. The extended lever itself is often a simple, robust steel component, easy to inspect and replace if necessary.
Versatile Pressure & Temperature Ratings: Suitable for a wide range of shipboard services within standard marine pressure and temperature parameters.

Technical Specifications & Configuration Options:

The following table outlines common specifications. Custom configurations regarding materials, sizes, and end connections are available upon request.

Parameter	Specification / Option
Size Range	DN50 (2") to DN300 (12")
Body Material	Ductile Iron (Epoxy Coated), Stainless Steel 316/316L, Bronze
Disc Material	Stainless Steel 316, Ductile Iron (Nylon Coated), Bronze
Seat Material	EPDM (Water, Sea Water), NBR (Oil, Fuel), Viton (High Temp/Chemical)
Stem Material	Stainless Steel 316, Monel (optional)
Connection Standard	ISO, ANSI, JIS, DIN flanges; Wafer or Lug type
Pressure Rating	PN10, PN16, 150LB
Lever Handle Length	Standard and Extended lengths available; customizable

Benefits for Ship Operators and Engineers:

Enhanced Safety & Efficiency: Easy operation reduces crew fatigue and the risk of injury in cramped spaces, leading to faster system isolation during maintenance or emergencies.
Reduced Operational Downtime: The valve's reliability and simple design mean fewer failures and easier, quicker repairs when needed.
Cost-Effective Solution: Compared to actuated valves, manual extended lever valves offer a highly reliable and lower-cost alternative for applications where automation is not required.
Design Flexibility: The availability in various materials and sizes allows it to be specified for numerous fluid services onboard, from fire mains to tank vent lines.
Global Compliance & Supply: Manufactured under an ISO9001-certified quality system and shipped from major ports like Shanghai, Guangzhou, and Hong Kong, ensuring consistent quality and reliable delivery to shipyards and fleets worldwide.

Trust and Global Reach:

Shanghai Zhibang's commitment to quality is backed by our ISO9001 certification, ensuring every valve meets stringent production standards. With an annual export value between US$1 Million and US$1.5 Million, our products have earned the trust of clients across six continents, including key maritime regions in North America, Europe, and Southeast Asia. Our valves are shipped from strategic ports for global accessibility. Choosing our Manual Marine Butterfly Valve means selecting a component designed for the real-world constraints of vessel engine rooms, backed by a manufacturer with proven international supply chain experience. For a reliable, easy-to-operate solution that simplifies marine piping system management, contact us to discuss your specific requirements and receive a competitive quotation.

Frequently Asked Questions (FAQ):

Q: What is the main advantage of the extended lever handle compared to a standard handwheel?
A: The extended lever provides greater torque with less applied force and requires less radial swing space. In a tight engine room, you may not have the room to turn a handwheel fully, but a long lever can often be operated through its 90-degree arc even in confined areas.
Q: Can this valve be used for both freshwater and seawater systems?
A: Yes, but the material selection is critical. For seawater, we recommend a stainless steel 316/316L body and disc with an EPDM seat. For freshwater, ductile iron with epoxy coating and an EPDM seat is a common and cost-effective option.
Q: Is the extended lever handle adjustable or fixed?
A: The standard configuration features a fixed-length extended lever for optimal strength. However, some models may offer a lever that can be detached or have an adjustable stop. Customizable lever lengths are available upon request to suit specific space constraints.
Q: How does the wafer design differ from the lug design, and which should I choose?
A: A wafer valve is sandwiched between two flanges using longer bolts and relies on the pipeline flanges for support. A lug valve has threaded inserts (lugs) on the valve body, allowing it to be bolted to each flange independently, enabling dead-end service and easier removal of downstream piping without disturbing the valve.
Q: What maintenance does this valve typically require?
A: Maintenance is minimal. Periodic visual inspection for external corrosion and operational checks are recommended. The resilient seat is self-compensating for minor wear. If the seat does require replacement, many designs allow for in-line seat replacement without removing the valve body from the pipeline.
Q: Are these valves suitable for fuel oil service?
A: Yes, with the correct material selection. For fuel oil, a configuration with a Nitrile (NBR) seat is typically specified due to its compatibility with hydrocarbons. The body and disc materials would be selected based on the specific fuel type and service conditions.
Q: Do you provide documentation like material certificates and test reports?
A> As an ISO9001-certified manufacturer, we can provide standard documentation including material certificates (CMTR) and factory test reports (for shell strength and seat leakage) upon request. Specific classification society approvals would be a custom order item.
Q: What is the typical lead time for orders?
A> Lead times vary based on size, material, and order quantity. For standard configurations in common sizes, we often have stock or short production cycles. We provide specific lead time estimates with every quotation to facilitate your planning.