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Home > Industrial Equipment & Components > Valve > Other Valves & Parts > Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation thumbnail-3

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation thumbnail-4

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation thumbnail-5

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation photo-1

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation photo-2

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation photo-3

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation photo-4

Butterfly Valve for Ship Desulfurization Tower, DN50 to DN800 Size Range With Manual or Pneumatic Actuation photo-5

Product Spotlights

Engineered for harsh marine scrubber environments, these butterfly valves (DN50-DN800) offer corrosion-resistant construction, bubble-tight sealing, and manual/pneumatic actuation options. Ensure reliable emission control, reduce maintenance, and comply with IMO regulations. ISO9001 certified manufacturer with global export experience.

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

Key Specifications

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Material:

Carbon Steel, Stainless Steel, or Special Alloys

Size Range:

DN50 to DN800

Actuation Type:

Manual Lever, Gearbox, or Pneumatic

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
Company Profile
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Material Carbon Steel, Stainless Steel, or Special Alloys

Size Range DN50 to DN800

Actuation Type Manual Lever, Gearbox, or Pneumatic

Connection Type Wafer, Lug, or Flanged

Seat Material PTFE, EPDM, or Metal Seated

Application Ship Desulfurization Tower Systems

Pressure Rating PN10, PN16, PN25, or ANSI Class 150

Design Standard ISO, API, or DIN Standards

Temperature Range -20°C to +200°C (depending on seat)

Coating/Option Epoxy Coating or Customizable upon request

As a leading valve manufacturer with ISO9001 certification since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for demanding maritime applications. Our Butterfly Valves for Ship Desulfurization Towers are engineered to withstand the harsh, corrosive environments of exhaust gas cleaning systems (EGCS or scrubbers). Designed for precise control of seawater, alkaline solutions, and process fluids within the desulfurization circuit, these valves ensure operational efficiency, regulatory compliance, and long-term reliability for your vessel's emission control system.

The core value of our desulfurization butterfly valve lies in its tailored design for marine scrubber service. We understand that failure in this critical system can lead to costly downtime and non-compliance with IMO regulations. Therefore, our valves are built with materials and configurations that resist corrosion from seawater and absorbent slurries, provide bubble-tight shut-off to prevent leakage, and offer smooth, low-torque operation for easy actuation even in limited engine room spaces.

Key Product Features & Technical Advantages:

Corrosion-Resistant Construction: Available in a variety of materials including carbon steel with protective epoxy coatings, 316 stainless steel, and duplex stainless steels to match the specific fluid chemistry (seawater, caustic soda mix) in your scrubber system.
Robust Disc & Stem Design: The disc is designed for optimal flow with minimal pressure drop, crucial for pump energy savings. The stem is securely connected to the disc, often with a pinned or keyed design, to prevent blow-out and ensure reliable operation under varying pressure conditions.
High-Performance Sealing: We offer multiple seat options. Resilient seats (PTFE, EPDM) provide excellent bubble-tight sealing for lower temperature applications. Metal-seated designs are available for higher temperature flue gas bypass lines or where abrasive particles are present.
Flexible Actuation Solutions: To suit different automation levels and space constraints on board.
- Manual: Simple lever or precision gearbox operation for local control.
- Pneumatic: Double-acting or spring-return actuators for remote, automated control integrated with the scrubber's control system. Actuators can be fitted with positioners, limit switches, and solenoid valves as required.
Compact & Lightweight Design: The wafer-style body is particularly advantageous for shipboard installations where space and weight are critical factors, allowing for easy installation between pipe flanges.

Detailed Technical Specifications:

Parameter	Specification / Options
Size Range (DN)	50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800
Pressure Rating	PN10, PN16, PN25 / ANSI Class 150
Body Material	Carbon Steel (WCB), 316 Stainless Steel (CF8M), Duplex Stainless Steel, Other alloys upon request
Disc Material	Stainless Steel, Duplex Steel, Carbon Steel with coating
Stem Material	Stainless Steel (416, 304, 316) or stronger alloys
Seat Material	PTFE, EPDM, NBR, Metal Seat (Stainless Steel)
Actuation Type	Manual Lever, Worm Gear Operator, Pneumatic Actuator (Double-acting/Spring-return)
End Connection	Wafer, Lug, Double Flanged
Temperature Range	-20°C to +150°C (Resilient Seat); Up to +425°C (Metal Seat)
Design & Test Standards	ISO 10631, API 609, EN 593, ISO 5208 (Leakage Test)

Benefits for Your Vessel's Operation:

Ensures Compliance: Reliable valve operation is key to maintaining the scrubber's efficiency, helping your vessel consistently meet IMO MARPOL Annex VI sulfur emission limits.
Reduces Maintenance & Downtime: Durable materials and robust construction minimize corrosion, wear, and the need for frequent replacements or repairs, lowering lifecycle costs.
Improves System Efficiency: Low-pressure drop design reduces the pumping power required, contributing to overall energy savings for the scrubber system.
Offers Installation Flexibility: The comprehensive size range (DN50-DN800) and multiple connection types allow for seamless integration into both newbuild and retrofit scrubber projects.
Provides Operational Safety: Positive shut-off and reliable actuation prevent unintended fluid release, protecting personnel and equipment.

Backed by our ISO9001 certified manufacturing processes and an annual export value demonstrating global trust, Shanghai Zhibang Valve is a partner you can rely on. Our valves are shipped from major ports like Shanghai, Guangzhou, and Hong Kong, reaching key maritime markets worldwide. We understand the critical nature of scrubber system components. Choosing our butterfly valve means investing in a component designed for the specific challenges of ship desulfurization, backed by a manufacturer with proven export capability and a commitment to quality. Contact us today to discuss your specific DN size, material, and actuation requirements for a reliable, cost-effective valve solution.

Frequently Asked Questions (FAQ)

Q: What makes your butterfly valve suitable for ship desulfurization towers compared to a standard valve?
A: Our valves are specifically engineered for the corrosive environment of scrubbers. We use corrosion-resistant materials (e.g., coated carbon steel, stainless steels), select seat materials compatible with seawater and alkaline solutions, and ensure designs meet relevant marine and industrial standards for pressure and temperature cycling common in EGCS.
Q: Can you provide valves for both the seawater inlet/outlet and the chemical dosing lines in a scrubber?
A: Yes. We offer material and seat recommendations based on the service fluid. For seawater lines, 316SS or coated carbon steel with EPDM/PTFE seats is common. For chemical dosing (e.g., NaOH), material compatibility is crucial, and we can advise on suitable alloys and sealing materials upon request.
Q: What are the lead times for an order of DN300 valves with pneumatic actuators?
A: Lead times vary based on order quantity and specific configuration. Standard configurations typically have shorter lead times. We recommend contacting our sales team with your detailed specifications (size, material, actuator type, accessories) for an accurate production and delivery schedule.
Q: Do you offer fire-safe design options for valves in certain areas of the scrubber system?
A: Fire-safe designs, often incorporating metal secondary seals, are available. Please specify this requirement when inquiring, as it influences the seat and disc design.
Q: How do I choose between a manual gearbox and a pneumatic actuator?
A: The choice depends on your system's automation needs and location. Manual gearboxes are used for local, infrequent operation. Pneumatic actuators are essential for remote, automated control as part of the scrubber's PLC system, allowing for quick opening/closing and integration with sensors.
Q: What certifications do your valves have for marine use?
A: Our manufacturing facility is ISO9001 certified, ensuring consistent quality management. Valves are manufactured to international standards like ISO, API, or DIN. Specific marine society approvals (e.g., ABS, DNV, LR) can be discussed and arranged upon request, depending on project requirements.
Q: Can you provide technical support for installation and maintenance?
A: Yes. We provide detailed installation and maintenance manuals with our products. For complex systems or specific issues, our engineering team is available to offer technical support and guidance.
Q: What is your packaging for export to ensure the valve arrives undamaged?
A: We use robust export-standard packaging. Valves are typically cleaned, dried, internal parts protected, and the whole unit is wrapped and secured in a wooden crate to withstand long-distance sea freight and handling.