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Help CenterDIN 3202 Wafer Butterfly Valve for Bilge and Ballast Systems on Vessels
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Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our DIN 3202 Wafer Butterfly Valve for Bilge and Ballast Systems on Vessels — a high-performance solution engineered specifically for marine environments. Leveraging over 8 years of manufacturing expertise and ISO9001 quality management system certification, we deliver valves that ensure reliable flow control in critical shipboard applications such as bilge pumping and ballast water management. Our strict adherence to the DIN 3202 standard guarantees dimensional interchangeability and robust sealing performance under demanding marine conditions.
This wafer-style butterfly valve is designed to be lightweight yet durable, offering easy installation between flanges and reducing overall system weight. Its corrosion-resistant materials and advanced sealing technology minimize leakage risks, extending service life in saltwater and oily bilge water environments. Whether for new builds or retrofitting projects, our valve meets the rigorous requirements of classification societies and shipyards worldwide.
Below are the key technical specifications and features that set our DIN 3202 wafer butterfly valve apart:
| Parameter | Specification |
| Design Standard | DIN 3202 (ISO 5752 series, face-to-face dimensions) |
| Size Range | DN50 to DN600 (2" to 24") – other sizes available upon request |
| Pressure Rating | PN10 / PN16 / Class 150 (customizable) |
| Body Material Options | Cast iron (GG25), Ductile iron (GGG40), Stainless steel (CF8, CF8M, 316L) |
| Disc Material | Stainless steel (SS304, SS316) / Duplex stainless steel / Bronze – optional |
| Seat Material | EPDM (standard), NBR, PTFE, VITON – for seawater or oil resistance |
| Stem Material | Stainless steel (SS410, SS316) – blow-out proof design |
| Temperature Range | -20°C to +120°C (higher temperature optional) |
| Operation Mode | Manual lever (DN50-DN200), gearbox (DN250-DN600), electric actuator, pneumatic actuator – customized |
| Applicable Medium | Fresh water, seawater, bilge water, light oil, ballast water |
product features and customer benefits
- Cost-effective sealing: The resilient seat design ensures bubble-tight shut-off even under low pressure, reducing leakage risks in bilge and ballast lines.
- Long service life in marine environments: Stainless steel disc and stem combined with corrosion-resistant seat materials withstand saltwater, oil residues, and biofouling.
- Lightweight and compact: Wafer body style saves weight and space in engine rooms and pipe galleries; compatible with standard flanges.
- Low torque operation: Optimized disc geometry minimizes flow resistance and actuator size, lowering power requirements for automated systems.
- Easy maintenance: The valve can be repaired inline without removing the pipework; seat replacement simplified by modular design.
- Full compliance with classification societies: Our manufacturing process follows ISO9001 quality standards, and valves can be supplied with certificates for DNV, GL, LR, ABS, CCS upon request (customer to specify).
- Customizable accessories: Available with limit switches, positioners, solenoid valves, and manual override for remote control integration.
Our manufacturing facility in Shanghai has been producing high-quality valves since 2016, with an annual export value of US$1 million to US$1.5 million. Our products are trusted by shipyards and marine service providers across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and many other regions. Each valve undergoes rigorous testing — including shell pressure tests, seat leakage tests, and dimensional checks — to guarantee performance before leaving our factory.
We understand the critical role that bilge and ballast valves play in ship safety and environmental compliance. Our DIN 3202 wafer butterfly valve offers a balanced combination of reliability, durability, and cost-efficiency. Whether you need a standard manual valve or a fully automated actuated solution, our engineering team provides technical support and customized options to meet your vessel's specific requirements.
Choose Shanghai Zhibang Valve for your next marine project. Contact us for a quotation or technical datasheet — we look forward to partnering with you for reliable fluid control on board.
Frequently Asked Questions
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Q: Can this valve be used for both bilge and ballast systems?
A: Yes, our DIN 3202 wafer butterfly valve is designed for both applications. It handles fresh water, seawater, and light oil, making it suitable for bilge pumping and ballast water transfer. -
Q: What is the maximum working pressure?
A: Standard models are rated PN10/PN16 (150 psi class). Higher pressure ratings (e.g., PN25) can be manufactured on request — please provide your system specifications. -
Q: Which seat material is best for seawater?
A: EPDM is the standard choice for seawater applications due to its excellent resistance to saltwater and ozone. For high-temperature or aggressive chemicals, we recommend PTFE or VITON. -
Q: Do you provide actuator mounting kits?
A: Yes, we offer ISO 5211 mounting top flanges and brackets for electric or pneumatic actuators. We can also supply a complete valve + actuator assembly if needed. -
Q: Can the valve be installed in any orientation?
A: The wafer butterfly valve can be installed horizontally or vertically. However, we recommend mounting with the stem horizontal for manual valves to reduce disc sagging effects. -
Q: What certifications are available?
A: Our factory holds ISO9001 certification. We can provide material certificates (EN 10204 3.1), hydrostatic test reports, and classification certificates (DNV, GL, ABS, CCS, etc.) as per customer requirements — please specify at order time. -
Q: What is the typical lead time?
A: For standard sizes and materials, lead time is 2–4 weeks. Custom configurations may require 4–8 weeks depending on complexity. We maintain a stock of popular models for quick shipment. -
Q: Do you offer a warranty?
A: Yes, we provide a standard 12-month warranty from shipment date against manufacturing defects. Extended warranty options are available upon negotiation.
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