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Help CenterMarine Lug Type Handle Butterfly Valve Compatible With DN50 to DN300 Pipes
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Shanghai Zhibang Valve Manufacture Co., Ltd., a professional valve manufacturer established in 2016, proudly presents our Marine Lug Type Handle Butterfly Valve series designed for DN50 to DN300 pipelines. Engineered specifically for demanding marine applications, this valve combines robust construction with operational simplicity, offering a reliable solution for fluid control in shipbuilding, offshore platforms, and port infrastructure. With an annual export value reflecting our global reach across markets from North America to Southeast Asia, we understand the critical need for durable and accessible valves in marine environments where maintenance space can be limited.
Our lug type design provides a distinct advantage for marine systems. Unlike wafer valves that rely on line pressure to seal, the lug pattern features threaded inserts on both sides, allowing the valve to be installed as a standalone endpoint or between two flanges without requiring a continuous pipeline for support. This makes it particularly suitable for:
- Isolation points in ballast, cooling, or fuel systems.
- End-of-line applications where one side may be disconnected.
- System maintenance, enabling easy removal of a section without disassembling the entire line.
The handle operation ensures quick and manual control, a vital feature in marine settings where power availability or automated system failure might occur. The valve's core characteristics are detailed below:
Technical Specifications & Advantages:
| Feature | Description & Benefit |
| Lug Type Body Design | Flanged bolt holes are threaded. Allows installation as a dead-end valve or between flanges. Provides structural independence from pipeline continuity. |
| Size Range (DN50-DN300) | Covers common marine pipeline diameters from 2 inches approx. (DN50) to 12 inches approx. (DN300). Offers a versatile solution for various system capacities. |
| Handle (Lug) Operator | Manual lever for 90-degree rotation. Provides direct, fail-safe control without need for external power. Ideal for emergency or routine manual operation. |
| Material Options | Body/Disc: Stainless Steel (316/304) for corrosion resistance, Carbon Steel for strength. Seal: EPDM, PTFE, Viton for different fluid compatibilities and temperatures. |
| Sealing Performance | Disc seals against a resilient seat. Bubble-tight shut-off available depending on seal material selection. Minimizes leakage in critical systems. |
| Pressure & Temperature Ratings | Typical pressure ratings like PN10 or PN16. Temperature range depends on seat material (e.g., EPDM: -20°C to 120°C). Specifications are customizable per application. |
For clients, the benefits are tangible:
- Installation Flexibility: The lug design simplifies system layout and maintenance procedures.
- Operational Reliability: Manual handle ensures control is always available, enhancing system safety.
- Corrosion Resistance: Material options like stainless steel combat harsh marine environments (saltwater, humidity).
- Cost-Effectiveness: Butterfly valves generally offer a lower weight and cost profile compared to many other valve types for similar sizes.
- Quick Operation: The 90-degree turn from fully open to fully closed allows for rapid flow control.
Shanghai Zhibang's commitment to quality is underscored by our ISO9001 certification, ensuring consistent manufacturing processes. With annual exports reaching US$1 Million to US$1.5 Million and shipments from major ports like Shanghai, Guangzhou, Hongkong, and Beijing, we have established a robust supply chain to serve our main markets worldwide, including North America, South America, Eastern Europe, Southeast Asia, Africa, and Oceania. This global footprint means we are equipped to meet your delivery timelines and provide valves that adhere to international expectations for marine equipment. Choose our Marine Lug Type Handle Butterfly Valve for a dependable, versatile, and manually operable solution tailored to the unique challenges of marine pipeline systems. Contact us to discuss your specific DN requirements, material preferences, and application details.
Frequently Asked Questions (FAQ):
-
Q: What is the main difference between a lug type and a wafer type butterfly valve?
A: A lug type valve has threaded holes in its flanges, allowing it to be bolted directly to a flange on one side without needing a counterpart flange on the other side for structural support. A wafer type relies on the pipeline flanges to clamp it in place and cannot be used as an end-of-line valve. The lug type offers more installation flexibility. -
Q: Can this valve be used with other operators besides the handle?
A: While this product is configured with a manual handle, many butterfly valve designs can be adapted with gear operators, actuators, or other mechanisms. Please inquire for customization options if you require a different operation method. -
Q: What materials are recommended for seawater applications?
A: For seawater or highly corrosive marine environments, stainless steel (such as 316) for the body and disc, combined with a compatible seal material like EPDM or Viton, is commonly recommended to resist chloride attack. -
Q: Is the valve suitable for high-pressure marine systems?
A: Butterfly valves are typically used for moderate pressure applications. Our valves have customizable pressure ratings. It is important to specify your system's maximum working pressure so we can confirm suitability or recommend an appropriate design. -
Q: How does the handle indicate the valve position?
A: The handle is aligned with the disc. When the handle is parallel to the pipeline, the valve is generally open. When it is perpendicular, the valve is closed. Some models may include a position indicator. -
Q: Are these valves available in sizes outside the DN50 to DN300 range?
A: Our standard series focuses on DN50 to DN300, which covers a wide range of common marine pipes. For sizes smaller than DN50 or larger than DN300, please contact us to check availability or custom manufacturing possibilities. -
Q: What is the typical delivery time for orders?
A: Delivery time depends on order quantity, specification, and destination port. With our manufacturing base in Shanghai and multiple shipment ports, we strive to offer competitive lead times. Specific timelines can be provided upon request. -
Q: Does the valve come with any standard certifications for marine use?
A> Our manufacturing process is certified under ISO9001 for quality management. For specific marine industry certifications (e.g., from classification societies), please specify your requirements as these can often be arranged upon request or may depend on the exact valve configuration.
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