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Help CenterJIS F7481 Compliant Marine Butterfly Valve for HVAC, Extended 2-Year Warranty on Body and Seal
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As a specialized manufacturer with a focus on industrial and marine fluid control, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our JIS F7481 Compliant Marine Butterfly Valve, engineered specifically for demanding HVAC applications onboard vessels. Established in 2016, we have dedicated our expertise to producing valves that meet the rigorous standards of the global marine industry. This valve is a direct result of our commitment to quality and reliability, offering shipbuilders, shipyards, and marine equipment suppliers a robust and certified solution for their air conditioning, ventilation, and heating systems. The inclusion of an extended 2-year warranty on both the valve body and seal underscores our confidence in the product's durability and performance in the challenging marine environment.
Our marine butterfly valve is designed to provide precise and reliable flow control for seawater cooling circuits, chilled water systems, and air handling units within a ship's HVAC network. It is constructed to withstand the corrosive effects of saltwater, constant vibration, and variable pressure conditions typical of maritime operations.
Key Features and Technical Advantages:
- JIS F7481 Compliance: Manufactured in strict accordance with the Japanese Industrial Standard for ship valves (JIS F7481), ensuring compatibility with international marine specifications and acceptance in shipyards worldwide.
- Extended Durability Warranty: We offer a comprehensive 2-year warranty covering the valve body and sealing components, providing peace of mind and reducing total cost of ownership.
- Corrosion-Resistant Construction: Available in a variety of material combinations to combat marine corrosion. Common configurations include a ductile iron body with epoxy coating, a stainless steel disc, and an EPDM seat for excellent seawater resistance.
- Bubble-Tight Shut-Off: The precision-engineered disc and resilient seat design ensure bubble-tight sealing, essential for efficient system operation and preventing fluid loss in closed-loop HVAC circuits.
- Low Torque Operation: The streamlined disc design and low-friction seat material allow for easy operation with manual levers, gear operators, or automated actuators, reducing operational effort and actuator sizing requirements.
- Bi-Directional Flow: The valve provides reliable sealing and control for flow in either direction, simplifying installation and system design.
- Compact and Lightweight Design: Compared to gate or globe valves, the butterfly valve offers a significant space and weight saving, a critical factor in marine applications where every kilogram counts.
- Easy Maintenance: The wafer or lug design allows for easy installation and removal from the pipeline without disturbing adjacent piping. The seat can often be replaced without removing the valve body from the line.
Technical Specifications Table:
| Parameter | Specification |
| Design Standard | JIS F7481 |
| Size Range (Nominal Diameter) | DN50 (2") to DN600 (24") |
| Pressure Rating | PN10, PN16, Class 125, Class 150 |
| Connection Types | Wafer, Lug, Double Flange (Drilled to various standards) |
| Body Material Options | Ductile Iron (epoxy coated), Cast Iron, Stainless Steel (CF8/CF8M) |
| Disc Material Options | Ductile Iron (coated), Stainless Steel 316, Aluminum Bronze |
| Seat Material Options | EPDM (Standard for seawater), NBR, PTFE, Viton (FKM) |
| Operating Temperature Range | -10°C to +120°C (depending on seat material) |
| Operation Method | Lever, Gearbox, Electric Actuator, Pneumatic Actuator |
| Face-to-Face Dimension | Complies with ISO 5752 / API 609 standards |
Benefits for Your Marine HVAC Project:
- Enhanced System Reliability: JIS compliance and robust construction minimize valve failure risks, ensuring uninterrupted operation of critical shipboard HVAC systems.
- Reduced Maintenance Costs: The extended warranty and durable materials lower long-term maintenance and replacement expenses.
- Simplified Procurement & Approval: The JIS F7481 certification is widely recognized, facilitating faster approval processes with ship classification societies and shipowners.
- Operational Efficiency: Low torque operation and bubble-tight sealing contribute to energy-efficient system performance.
- Design Flexibility: A wide range of sizes, materials, and actuation options allows for perfect integration into any new build or retrofit project.
Backed by our ISO9001:2015 certified manufacturing processes, Shanghai Zhibang Valve ensures consistent quality in every valve we produce. With an annual export value ranging between US$1 Million and US$1.5 Million, our products have been successfully delivered and installed in vessels across key global markets including North America, South America, Europe, Southeast Asia, Africa, and Oceania. We ship efficiently from major ports like Shanghai, Guangzhou, and Hong Kong. Our direct manufacturer status allows us to offer competitive pricing, reliable lead times, and full technical support. Choose our JIS F7481 Marine Butterfly Valve for your HVAC applications and partner with a supplier committed to maritime quality and service. Contact us today for a quotation or to discuss your specific project requirements.
Frequently Asked Questions (FAQ):
Q1: What does "JIS F7481 Compliant" mean for my project?
A1: JIS F7481 is a Japanese Industrial Standard specifically for ship valves. Compliance ensures the valve is designed, manufactured, and tested to meet recognized maritime requirements for materials, dimensions, pressure ratings, and performance, which is often required or preferred by shipyards and classification societies.
Q2: Is this valve suitable for raw seawater service in cooling systems?
A2: Yes, it is well-suited for this application. We recommend specifying a body material like epoxy-coated ductile iron or stainless steel, paired with an EPDM seat, which offers excellent resistance to saltwater corrosion and biological growth.
Q3: What is covered under the 2-year extended warranty?
A3: The warranty specifically covers defects in materials and workmanship for the valve body and the primary sealing components (seat and disc seal interface) under normal operating conditions as specified. It provides added assurance against premature failure.
Q4: Can you provide valves with actuators for automated control?
A4: Absolutely. We can supply the valve as a manual unit or pre-assembled with electric or pneumatic actuators. Actuator selection (torque, control signal, fail-safe mode) can be customized based on your system design requirements.
Q5: Do you offer different flange drilling standards besides JIS?
A5: Yes. While the valve design complies with JIS F7481, the flange faces can be drilled to match other common standards such as ANSI/ASME, DIN, BS, or GB upon request to ensure compatibility with your existing piping.
Q6: What is the typical delivery time for an order?
A6: For standard configurations and sizes, lead times are generally competitive. Exact timing depends on the order quantity and specific specifications. We provide reliable schedules and ship from multiple ports for logistical efficiency.
Q7: How do I select the correct seat material for my HVAC fluid?
A7: The optimal seat material depends on the fluid temperature and composition. EPDM is standard for chilled/sea water up to 120°C. NBR is for oils, PTFE for high temps or aggressive chemicals, and Viton for higher temperatures and hydrocarbons. Our technical team can assist you in selection.
Q8: Are test reports and certification documents provided?
A8: Yes, standard documentation includes a material test report and a certificate of compliance. Additional testing like a shell test or seat leak test report can be provided upon request.
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