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Home > Industrial Equipment & Components > Valve > Check Valve > Dual Plate Marine Slow Closing Check Valve, Counterweight Type, DN100-DN300, PN16, Flanged Connection, LR ABS Approved
Dual Plate Marine Slow Closing Check Valve, Counterweight Type, DN100-DN300, PN16, Flanged Connection, LR ABS Approved
Product Spotlights
LR & ABS approved dual plate check valve with counterweight slow closing mechanism for DN100–DN300 marine systems. Eliminates water hammer, low pressure drop, adjustable closure speed, durable flanged design. ISO 9001 quality, customizable materials, global shipping from Shanghai Zhibang Valve.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, Ductile Iron / Stainless Steel / Carbon Steel (optional)
Application:
Other, Marine / Shipbuilding Systems
Standard:
Other, ISO 9001 (Manufacturing Quality)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Ductile Iron / Stainless Steel / Carbon Steel (optional)
Application
Other, Marine / Shipbuilding Systems
Standard
Other, ISO 9001 (Manufacturing Quality)
size_range
DN100 – DN300
pressure_rating
PN16
connection_type
Flanged (EN 1092 / BS 4504)
valve_type
Dual Plate, Counterweight, Slow Closing
certification
LR ABS Type Approval
operation_style
Automatic (gravity counterweight closure)
temperature_range
Available upon request
Shanghai Zhibang Valve Manufacture Co., Ltd. presents our premium Dual Plate Marine Slow Closing Check Valve, Counterweight Type – a high-performance solution designed to prevent reverse flow in seawater cooling systems, ballast lines, and other marine piping applications. Engineered with a counterweight mechanism that ensures gradual, shock-free closure, this valve significantly reduces water hammer and system noise. With flanged connections spanning DN100 to DN300, a PN16 pressure rating, and full LR & ABS type approval, it meets the rigorous demands of global shipbuilding and offshore industries.
Key Features & Technical Specifications
- Dual Plate Design: Compact, lightweight structure with low pressure drop, ideal for space‑constrained marine installations.
- Counterweight Slow Closing: Adjustable weight ensures a smooth, delayed closure, preventing slam and prolonging valve life.
- Flanged Connection: Conforms to EN 1092 / BS 4504 standards for reliable, leak‑free piping integration.
- Durable Materials: Available in ductile iron, stainless steel, or carbon steel – customizable for seawater, oil, or freshwater services.
- Type Approval: LR (Lloyd's Register) and ABS (American Bureau of Shipping) certified, ensuring compliance with international marine class society rules.
| Parameter | Value |
|---|---|
| Nominal Diameter | DN100 – DN300 |
| Pressure Rating | PN16 (16 bar) |
| Connection | Flanged (EN 1092 / BS 4504) |
| Valve Type | Dual Plate, Counterweight Slow Closing |
| Material Options | Ductile Iron / Stainless Steel / Carbon Steel |
| Certification | LR, ABS Type Approval |
Why Choose Our Marine Check Valve?
- Anti‑Water Hammer Performance: The counterweight system allows a controlled, incremental closing cycle that eliminates pressure surges.
- Low Maintenance: Few moving parts, with corrosion‑resistant coatings available for extended service life in harsh marine environments.
- Easy Installation: Flanged face‑to‑face dimensions comply with standard marine piping layouts, reducing retrofit costs.
- Versatile Sizing: From DN100 to DN300, suitable for main engine cooling, fire fighting, and bilge systems.
- Customizable Counterweight: Weight balance can be adjusted on site to match specific flow conditions and closure speed requirements.
Shanghai Zhibang Valve Manufacture Co., Ltd. has been a trusted manufacturer since 2016, with an annual export value of US$1 million to US$1.5 million. Our products are shipped from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing to markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. We are ISO 9001 certified, ensuring rigorous quality control from raw material inspection to final testing. Each dual plate check valve undergoes a hydrostatic test and a functional slow‑closing test before delivery.
Our valves are widely used in newbuild vessels and marine retrofitting projects. With LR & ABS type approval, you can be confident that this product meets the highest class society standards. We also offer full technical support, including installation guidance and spare parts supply.
Contact us today to request a quote or discuss your specific marine check valve requirements. Shanghai Zhibang Valve – your reliable partner in flow control.
Frequently Asked Questions
-
Q: Can this valve be installed vertically?
A: Yes, the counterweight type check valve is designed for both horizontal and vertical upward flow installations. However, for optimal slow‑closing performance, horizontal mounting is recommended. -
Q: What media is suitable?
A: This valve is suitable for seawater, fresh water, oil, and other non‑aggressive fluids. For corrosive media, stainless steel or lined materials are available upon request. -
Q: Does the valve require external power or control?
A: No. It is fully automatic – the counterweight provides the closing force without the need for pneumatic, hydraulic, or electrical actuation. -
Q: What class society approvals are included?
A: The valve holds LR (Lloyd's Register) and ABS (American Bureau of Shipping) type approval. Certificates can be provided upon request. -
Q: How do I adjust the closing speed?
A: The counterweight can be repositioned or additional weights added/removed. Our technical team can provide adjustment instructions. -
Q: What is the temperature range?
A: Standard design temperature is -10°C to 80°C. Higher temperature versions are customizable – please specify your requirement. -
Q: Do you offer custom flange drilling?
A: Yes, flange drilling can be adapted to ANSI, JIS, or other standards per your specification. -
Q: What is the typical lead time?
A: For standard sizes (DN100–DN300), lead time is 15–25 working days. Custom orders may require additional time.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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