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Help CenterMarine Wafer Pneumatic Butterfly Valve With Solenoid for Seawater Cooling Systems, GB/T3036-94
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As a leading manufacturer with ISO9001 certification, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing robust and reliable fluid control solutions for demanding marine environments. Our Marine Wafer Pneumatic Butterfly Valve with Solenoid is engineered specifically for the harsh conditions of seawater cooling systems, offering superior corrosion resistance, dependable actuation, and long service life. With an annual export value reflecting our global reach across markets from North America to Oceania, we understand the critical need for valves that perform under pressure. This valve combines a compact wafer design with precise pneumatic-solenoid control, ensuring efficient and safe operation in vital shipboard cooling circuits, helping to protect main engines and auxiliary machinery from overheating.
This valve is designed to meet the rigorous demands of marine applications. Its core construction utilizes high-grade corrosion-resistant materials such as CF8M (316 stainless steel) for the body and disc, effectively withstanding the aggressive nature of seawater. The seat is typically made from EPDM or PTFE, providing excellent sealing and chemical resistance. The integration of a pneumatic actuator with a solenoid pilot valve allows for remote and automated on/off or modulating control, which is essential for modern, centralized marine engine room management systems. The wafer-style connection conforms to the Chinese national standard GB/T 3036-94, ensuring compatibility with a wide range of piping flanges and facilitating easy installation and maintenance in space-constrained engine rooms.
Key Technical Specifications & Advantages:
- Optimized for Seawater: Material selection and protective design minimize pitting, crevice corrosion, and biofouling, ensuring reliable performance and reducing maintenance frequency.
- Rapid and Reliable Actuation: The pneumatic-solenoid system provides quick response times for opening and closing, crucial for emergency shutdowns or rapid system adjustments in cooling loops.
- Compact & Lightweight Design: The wafer configuration offers significant space and weight savings compared to lug or flanged valves, a critical factor in marine vessel design.
- Low Torque Operation: The butterfly valve design requires lower actuation torque, allowing for the use of smaller, more economical pneumatic actuators and reducing overall system energy consumption.
- Bubble-Tight Shut-off: Precision-machined disc and resilient seat combine to achieve excellent sealing performance, preventing leakage and ensuring system efficiency.
- Easy Integration: The standard ISO 5211 mounting pad on the actuator allows for easy interchangeability and connection with various pneumatic control systems.
The table below outlines common configurations:
| Parameter | Specification / Option |
|---|---|
| Standard Sizes (DN) | 50, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600 |
| Pressure Rating (PN) | 10, 16, 25 |
| Body Material | CF8 (304 SS), CF8M (316 SS), Duplex Stainless Steel |
| Seat Material | EPDM (Standard), PTFE (High-temp/Chemical) |
| Actuator Air Supply | 4-7 bar (Standard), other pressures customizable |
| Solenoid Voltage | 24VDC, 110VAC, 220VAC (Available upon request) |
| Action Type | Fail-Close (Air-to-Open) or Fail-Open (Air-to-Close) |
For ship owners, operators, and shipyards, the benefits are clear. This valve contributes to enhanced operational safety by ensuring reliable cooling flow control. Its durability leads to reduced lifecycle costs through fewer replacements and lower maintenance downtime. The automated control capability supports improved operational efficiency and can be integrated into predictive maintenance systems. Furthermore, its compliance with recognized standards like GB/T 3036-94 provides assurance of quality and interchangeability, simplifying procurement and spare parts management for global fleets.
Frequently Asked Questions (FAQ):
-
Q: Is this valve suitable for raw seawater service?
A: Yes, it is specifically designed for seawater cooling systems. We recommend the CF8M (316 SS) or Duplex Stainless Steel body material with EPDM seats for optimal corrosion resistance against chlorides and marine organisms. -
Q: What is the lead time for standard sizes?
A: For standard configurations in common sizes (DN50-DN300), we typically maintain stock or can deliver within 15-30 days. Larger sizes or special materials may require additional production time. -
Q: Can you provide valves with different end connections, like lug type?
A: Absolutely. While the standard is a wafer type per GB/T 3036-94, we can manufacture lug-type or double-flanged butterfly valves upon request to meet specific project piping requirements. -
Q: What certifications do your valves have?
A: Our manufacturing process is certified to ISO9001, ensuring consistent quality control. The valves are produced to meet GB/T 3036-94. Other specific marine certifications (e.g., from classification societies) can be discussed as a customizable option. -
Q: How does the fail-safe function work?
A: The pneumatic actuator can be configured as "fail-close" (spring return closes the valve on air/electrical failure) or "fail-open." This is determined by the spring arrangement inside the actuator, which is specified at the time of order. -
Q: Do you offer technical support for system integration?
A: Yes, our engineering team can provide support regarding valve sizing, actuator selection, solenoid valve specifications, and integration advice for your specific cooling system schematic. -
Q: What is the expected service life in a marine environment?
A: With proper material selection (e.g., 316 SS) and routine maintenance (e.g., checking actuator function), these valves are designed for a service life exceeding 10 years in typical seawater cooling applications. -
Q: What are the main shipping ports?
A: We ship globally from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring flexible and efficient logistics to our international customers.
Backed by our ISO9001-certified manufacturing expertise and a proven track record of supplying valves across six continents—from North America and Western Europe to Southeast Asia and Africa—Shanghai Zhibang stands as a trusted partner in marine fluid control. Our annual export volume is a testament to the reliability and performance our clients have come to expect. Choosing our Marine Wafer Pneumatic Butterfly Valve means investing in a component that safeguards your vessel's critical cooling systems, reduces operational risks, and delivers long-term value. Contact us today to discuss your specific requirements or to request a detailed quotation.
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