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Help CenterManual and Pneumatic Actuated DIN 3202 Marine Butterfly Valves
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Shanghai Zhibang Valve Manufacture Co., Ltd. (established in 2016) is a professional manufacturer specializing in high-performance valves for marine and industrial applications. Our Manual and Pneumatic Actuated DIN 3202 Marine Butterfly Valves are designed to meet stringent maritime requirements, offering reliable flow control in challenging environments. These valves combine robust construction with flexible actuation options—manual lever/gearbox or pneumatic actuator—ensuring efficient operation and long service life. Trusted by global buyers across North America, Europe, and Asia, our products deliver value through precision engineering and cost-effective solutions.
Key Features & Technical Specifications
- Compliant with DIN 3202 Standard: Wafer-type face-to-face dimensions (F4/F5 series) ensure interchangeability and easy installation between flanges.
- Versatile Actuation Options: Manual handle with lever or gearbox for precise throttling; pneumatic actuator with double-acting or spring-return (fail-safe) configurations.
- Corrosion Resistance: Body materials include ductile iron epoxy coated, stainless steel CF8/CF8M, and nickel-aluminum bronze for seawater resistance.
- Bubble-Tight Shut-Off: Resilient seat (EPDM/NBR/PTFE) provides zero leakage performance up to full pressure rating.
- Low Torque Design: Optimized disc profile reduces operating torque, extending actuator life and reducing energy consumption.
- Marine Approvals: Engineered for shipbuilding, offshore platforms, and coastal systems; available with certification upon request.
- Wide Size Range: DN50 to DN600 (2"–24") to fit various pipeline diameters.
- Optional Accessories: Limit switches, solenoid valves, positioners, and manual override for pneumatic actuators.
| Parameter | Value |
|---|---|
| Pressure Rating | PN10, PN16, PN25 |
| Temperature Range | -20°C to +120°C (optional up to +200°C) |
| Actuator Supply Pressure (Pneumatic) | 4–7 bar (dry air or inert gas) |
| Suitable Fluids | Seawater, fresh water, oil, gas, and other non-aggressive media |
| Leakage Rate | Zero leakage (ISO 5208 Rate A) |
| Operating Torque (Manual) | Low torque: gearbox reduces effort for large sizes |
Why Choose Our DIN 3202 Marine Butterfly Valves?
- Longevity in Harsh Conditions: Epoxy coating (minimum 250 microns) resists salt spray and UV, ideal for deck and engine room applications.
- Lower Total Cost of Ownership: Minimal maintenance due to corrosion-resistant materials and easy replacement of seat/liner without special tools.
- Flexible Integration: Both manual and pneumatic actuation can be supplied with NAMUR mounting interface, allowing easy retrofitting of third-party actuators.
- Quality Assurance: Every valve undergoes pressure testing (shell and seat) and functional tests before shipment; ISO 9001 certified factory.
- Global Logistics: Shipped from Shanghai, Guangzhou, Hong Kong, or Beijing ports with fast delivery to all major markets.
With over 7 years of manufacturing experience and an annual export value of US$1–1.5 million, Shanghai Zhibang Valve has supplied hundreds of clients worldwide. Our valves are used in marine systems such as ballast water treatment, cooling water lines, firefighting systems, and cargo handling. We provide OEM/ODM services and can customize dimensions, materials, and actuators according to your specific requirements. Contact our team today for competitive pricing and technical support.
Frequently Asked Questions (FAQ)
Q1: What is the difference between manual and pneumatic actuation for these butterfly valves?
A: Manual actuation uses a lever or gearbox for hand operation—suitable for infrequent adjustment or isolation. Pneumatic actuation enables remote or automated control, ideal for systems requiring frequent cycling or integration with PLC/DCS. Both options are available for the same valve body.
Q2: Can these valves handle seawater? What materials are recommended?
A: Yes, they are designed for marine use. We recommend nickel-aluminum bronze disc and stainless steel shaft with EPDM seat for excellent seawater resistance. Ductile iron body with epoxy coating is also suitable. Please confirm your specific medium for best material selection.
Q3: Are the valves supplied with the pneumatic actuator assembled and tested?
A: Yes, each complete unit (valve + actuator) is assembled, tested for function and leakage, and calibrated before shipment. Additional accessories like solenoid valves and limit switches can be mounted upon request.
Q4: What certificates can you provide?
A: Our factory is ISO 9001 certified. For specific marine classification (e.g., CCS, DNV, ABS), we can arrange third-party inspection and certification at extra cost—please inquire with your requirements.
Q5: What is the lead time for a typical order?
A: For standard sizes and materials, lead time is 15–25 working days. Customized orders may take 30–40 days depending on complexity. We support express delivery for urgent needs.
Q6: Do you offer samples? Is there a sample fee?
A: Yes, we provide samples for evaluation. Sample cost depends on size and actuation type; freight is borne by the buyer. The sample fee can be deducted from the first bulk order.
Q7: How do I select the correct actuator for my system?
A: Specify the required supply pressure, fail-safe position (normally closed/open), and desired operating time. Our engineers can calculate the required torque and recommend the appropriate actuator size. Contact us with your working conditions.
Q8: What is the warranty period?
A: We offer a 12-month warranty from date of shipment against manufacturing defects. Extended warranty is available upon request.
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