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Help CenterLow Torque Marine Butterfly Valve for Desulfurization Tower Control, Wafer/Lug Design
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Shanghai Zhibang Valve Manufacture Co., Ltd. presents our premium Low Torque Marine Butterfly Valve specially engineered for desulfurization tower control applications. With over 8 years of valve manufacturing experience and an annual export value exceeding US$1 million, we understand the demanding requirements of industrial flow control. This butterfly valve combines a unique low-torque design with durable wafer or lug body configurations, providing reliable, efficient shut-off and regulation in corrosive and high-temperature environments. Our valves are trusted by customers across North America, Europe, and Southeast Asia, offering consistent performance and cost-effective operation.
Designed specifically for desulfurization processes, this valve features a streamlined disc profile that minimizes operating torque, reducing actuator size requirements and energy consumption. The bubble-tight sealing ensures zero leakage, critical for environmental compliance and process safety. Whether you need a wafer-style valve for space-saving installation between flanges or a lug-style valve for end-of-line or isolation service, our product delivers exceptional performance in harsh chemical and abrasive conditions.
Key Features & Benefits
- Low Torque Design – Offset disc geometry reduces operating torque by up to 30% compared to standard butterfly valves, allowing smaller actuators and lower installation costs.
- Versatile Body Options – Available in both wafer and lug configurations. Wafer type for compact installation between flanges; lug type for dead-end service or easy maintenance without draining the system.
- Superior Sealing Performance – Resilient liners (EPDM, PTFE, NBR) provide bubble-tight shut-off, even under low pressure conditions, meeting the strictest leakage standards.
- Corrosion Resistance – Body and disc materials available in ductile iron, stainless steel, or aluminum bronze, suitable for aggressive media like flue gas desulfurization slurry, seawater, and chemical solutions.
- Full Compatibility – Designed to comply with ISO, API, and AWWA standards (optional), ensuring interchangeability with existing piping systems.
- Low Maintenance – Simple design with fewer moving parts translates to reduced downtime and long service life.
Technical Specifications
| Parameter | Value / Range |
| Size Range | DN50 – DN600 (2” – 24”) |
| Pressure Rating | PN10 / PN16 / Class150 |
| Operating Temperature | -20°C to +120°C (customizable up to 200°C) |
| Body Material | Ductile Iron (GGG40/50), Stainless Steel (CF8/CF8M), Carbon Steel |
| Disc Material | Stainless Steel 304/316, Aluminum Bronze, Duplex (optional) |
| Seal / Liner | EPDM (standard), PTFE, NBR, Viton® (custom) |
| Operation | Manual Lever / Gearbox / Pneumatic Actuator / Electric Actuator (optional) |
| Face-to-Face Standard | ISO 5752, API 609 (Category A) |
Our Low Torque Marine Butterfly Valve undergoes rigorous quality control, including hydrostatic shell tests, seat leakage tests (ISO 5208 Rate A), and torque verification. Every valve is serial-number traced to ensure full accountability. With a proven track record in desulfurization towers, offshore platforms, and marine systems, this valve offers a reliable solution for demanding flow control applications.
Trust & Reliability from Shanghai Zhibang Valve
Founded in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. has grown into a trusted manufacturer with an annual export value of US$1 million to US$1.5 million. We hold ISO9001 certification for our quality management system, ensuring consistent product excellence. Our valves are shipped from Shanghai, Guangzhou, Hong Kong, and Beijing, serving markets across North America, South America, Eastern Europe, Africa, Oceania, the Middle East, and Asia. We support OEM/ODM requirements and offer customizations to meet specific project needs.
By choosing our low torque butterfly valve, you gain a partner committed to performance, durability, and responsive after-sales support. Our technical team provides installation guidance, sizing recommendations, and troubleshooting assistance. Contact us today to request a quote or sample test — experience the difference of precision-engineered marine valves designed for the toughest desulfurization environments.
Frequently Asked Questions (FAQ)
1. What is the difference between wafer and lug style in your butterfly valve?
The wafer type is designed to fit between two flanges, held in place by bolts that span the valve body. It is more compact and cost-effective for standard applications. The lug type has threaded inserts allowing one flange to be removed without draining the system, making it ideal for isolation or maintenance scenarios. Both are available in our low torque design.
2. What media can this valve handle?
It is suitable for a wide range of media including seawater, flue gas desulfurization slurry (FGD), cooling water, air, and diluted chemicals. Specific material compatibility (e.g., PTFE liner for aggressive chemicals) is available upon request. Always confirm with our engineering team for media with high abrasion or extreme pH.
3. How is the low torque performance achieved?
The disc profile features an offset design with a streamlined shape that reduces friction against the seat during opening and closing. This lowers the required torque by up to 30% compared to conventional butterfly valves, allowing the use of smaller actuators and reducing energy consumption.
4. Do you provide actuator mounting and automation?
Yes. Our valves come with standard ISO 5211 top flange for easy mounting of pneumatic, electric, or hydraulic actuators. We can supply complete actuated packages with solenoid valves, limit switches, and positioners as per your control requirements.
5. What certifications do you offer?
Our company is ISO9001 certified. Specific product certifications such as API 607 (fire test), ABS (marine), or WRAS (drinking water) can be arranged for an additional cost, depending on order volume. Please inquire for your particular market needs.
6. What is the typical lead time and warranty?
Standard lead time is 15–25 working days after order confirmation, depending on size and quantity. Custom orders may take longer. We offer a 12-month warranty against manufacturing defects from the date of shipment. Extended warranty options are negotiable.
7. Can I get a sample for testing?
Yes. Sample orders are welcome. We charge the sample cost plus shipping, and the sample fee can be deducted from future bulk orders. Contact our sales team to discuss the sample procedure and lead time.
8. How do I select the right valve size and material for my desulfurization tower?
Selection depends on pipeline pressure, temperature, and the chemical composition of the flue gas. Our technical documentation includes a valve selection guide. Alternatively, you can provide your operating parameters, and our engineers will recommend the optimal configuration (body, disc, seat, and actuator) free of charge.
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