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DELCO Hydraulic Wafer Butterfly Valve
Durable cast iron construction with hydraulic actuation, providing reliable shut-off, smooth flow control, and long-lasting performance for industrial water and pipeline systems.
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DELCO MYD-WB Hydraulic Wafer Butterfly Valve | Cast Iron Material, High Torque, Anti-Water Hammer, Large Bore Industrial Pipelines
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Nominal Diameter: DN50–DN1600 (2"–64")
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Connection Options: Flange Type, Wafer Type
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Body Material: A216-WCB, A351-CF8/CF8M, A351-CF3/CF3M
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Temperature Range: -40ºC ~ +80ºC
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Pressure Range: PN 16 ~ PN40
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Medium Type: Water, Oil, Gas, Air, Chemical Fluids
Hydraulic Wafer Butterfly Valve is a high-performance fluid control valve driven by hydraulic actuators, designed for large-diameter, high-pressure, and heavy-duty industrial pipelines. It features large output torque, stable operation, excellent anti-water hammer performance, and reliable bidirectional sealing, supporting both automatic control and manual emergency operation.
Key Features
- High Torque & Smooth Operation: Hydraulic actuators deliver powerful opening/closing force with shock-free movement, suitable for large-diameter, high-pressure applications.
- Water Hammer Protection: Features staged fast/slow closing to effectively eliminate water hammer and prevent damage to piping networks and equipment.
- Bi-directional Zero-Leakage Sealing: Double- or triple-offset designs with metal or resilient seal options ensure long-term, reliable zero-leakage performance.
- Emergency Operation: Manual override capability ensures system safety during power outages or malfunctions.
- Integrated & Easy Installation: Wafer or lug-style designs offer compact dimensions and convenient installation, serving as a space-saving alternative to gate valve plus check valve combinations.
- Automation Compatibility: Supports remote control and integration with PLC, DCS, and SCADA systems, making it ideal for smart pipeline networks.
Primary Applications
- Water Conservancy & Hydropower: Pump outlets, reservoirs, hydroelectric plants, and water supply/drainage networks.
- Municipal Engineering: Wastewater treatment, long-distance water transmission, and flood control/drainage.
- Energy & Power: Thermal power plants, nuclear power stations, district heating networks, and circulating water systems.
- Petrochemicals: Oil products, chemical media, and oil/gas transmission pipelines.
- Metallurgy & Mining: Slurry, wastewater, and industrial circulating water systems.
Operating Conditions
- Pipeline control involving large diameters, high pressures, and high flow rates
- Critical systems requiring rapid shut-off and water hammer protection
- Pump outlets, main pipeline networks, and emergency shut-off scenarios
- Demanding industrial environments across water conservancy, power generation, municipal infrastructure, and chemical processing
The Hydraulic Operated Wafer Butterfly Valve is designed for efficient control of fluid flow in various industrial applications. Featuring a robust hydraulic actuator, this valve ensures reliable performance in high-pressure systems. Its butterfly-style design allows for quick and precise operation, making it ideal for regulating flow in pipelines carrying water, oil, gas, and other fluids. Available in a wide range of sizes, it offers flexibility in installation, ensuring compatibility with different pipeline standards. The hydraulic actuator allows for smooth, controlled operation, while the valve body material options such as WCB, LCC, and others provide excellent durability and resistance to corrosion. This valve is widely used in sectors like oil & gas, water treatment, and chemical industries for applications requiring reliable flow regulation under varying conditions.
| Standard | Design and manufacturing | Face-to-face dimensions | Flange dimensions | Pressure and temperature ratings | Inspection and testing | Leakage class |
| National standards and industry standards | GB/T12224, GB/T12238, JB/T8527 | GB/T12221 | GB/T91129124, HG/T2059220635, SH3406JB/T79 | GB/T9124, GB/T12224 | JB/T9092, GB/T13927 | GB/T4213 |
| American Standard | API 609 | API 609 | ASME B16.5, ASME B16.47 | ASME B16.34 | API 598 | ANSI/FCI70-2, ASME B16.104 |
| Other national standards | JIS B2002, ISO5752 | EN1092 |
Overview of Hydraulic Actuators
The MYD series quarter-turn hydraulic actuator is an ideal hydraulic actuator developed by DELCO, incorporating advanced international technology. It features a long service life, high output torque, a compact and rational structure, rugged durability, and an aesthetically pleasing design. It supports programmable and microprocessor-based control, enabling modulating control or rapid on/off functions. Suitable for various quarter-turn valves—such as ball valves, butterfly valves, and plug valves—it is widely used in industrial pipeline control systems across sectors including petrochemicals, metallurgy and papermaking, nuclear power, boiler equipment, and military marine applications.
The MYD series compact hydraulic actuators are designed and manufactured in strict accordance with standardization, miniaturization, and modular series principles, ensuring high versatility and ease of installation and maintenance. The bottom mounting interface complies with the ISO 5211 standard, facilitating easy valve installation. An opening indicator provides a clear visual display of "Open" and "Close" positions and is easily removable to allow for manual wrench operation. Stroke adjustment bolts mechanically limit the actuator's rotation angle, enabling on-site adjustment of the open and closed positions; standard products offer a ±5° adjustment range at both the 0° and 90° positions. The MYD series represents a new type of hydraulic actuator independently developed and manufactured by DELCO, holding a relevant technical patent (Patent No.: ZL201020225905.6).
Structural Features
1. Utilizes a rack-and-pinion transmission mechanism, offering a simple, reliable, and compact design with high output torque.
2. The hydraulic cylinder is made of cast carbon steel, providing excellent comprehensive mechanical properties and an attractive appearance.
3. The actuator piston features an integrated structure capable of withstanding higher pressures and delivering greater output torque.
4. A manual override mechanism can be installed at the bottom of the hydraulic cylinder.
5. Adjustment bolts allow for fine-tuning (±5°) of the fully open and fully closed positions.
6. Limit switches, travel switches, or proximity switches can be mounted on the top to enable remote control operations.
7. The bottom mounting interface adheres to the ISO 5211 standard, ensuring high versatility and easy integration with various types of valves.
Key Technical Parameters
1. Hydraulic source pressure: 2.0–16 MPa
2. Ambient temperature: -20–80°C; low-temperature model: -40–80°C; high-temperature model: -20–120°C.
3. Model specifications: MYD 32/50/63/80/100/125.
4. Hydraulic fluid: Hydraulic fluid with a viscosity not exceeding 40 cSt; low-temperature hydraulic fluid should be used in cold regions.
5. Installation: Avoid installation environments exposed to open air, extreme temperatures (high or low), high humidity, or corrosive elements; otherwise, appropriate protective measures must be taken.
What is a Hydraulic Wafer Butterfly Valves?
The hydraulic wafer butterfly valve is an automated valve that utilizes a hydraulic actuator to drive the rotation of the butterfly plate for opening and closing. Characterized by a compact structure, ease of installation, precise control, and reliable sealing, it is widely used in water treatment, industrial piping, and large-scale fluid control systems.
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Custom Hydraulic Wafer Butterfly Valves – Tailored for Heavy-Duty Industrial Pipeline Control
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01Oil & Gas
The oil and gas industry operates in extreme pressures and offshore environments. Valves must ensure long service life, corrosion resistance, andabsolute reliability to secure production safety.VIEW MORE -
02Water & Wastewater
Treatment facilities demand valves that can handle continuous operation and variable flows. Efficient sealing and low-maintenance performance are essential to ensure clean water supply and stable processes.VIEW MORE -
03Power Generation
Power plants require durable valves capable of withstanding high temperatures, steam, and critical pressure conditions. Reliability and safety are vital to maintain uninterrupted energy output.VIEW MORE -
04Pharmaceutical
Production in pharmaceutical and food industries requires hygienic valves with precise flow control. Easy cleaning, FDA/GMP compliance, and contamination-free operation are critical to product quality.VIEW MORE -
05Chemical & Petrochemical
Chemical processes involve aggressive media and corrosive conditions. Valves must provide excellent sealing, chemical resistance, and operational stability to protect equipment and ensure plant safety.VIEW MORE -
06Marine & Shipbuilding
Marine and offshore systems demand valves resistant to seawater corrosion, vibration, and harsh climate conditions. Strong reliability ensures safe operation on vessels and offshore platforms.VIEW MORE
Frequently Asked Questions
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How do I choose the right valve for my application?
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What information is needed for valve quotation?
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What materials are available for industrial valves?
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What is the difference between manual, pneumatic, and electric valves?
Choosing the right valve is essential for safe and efficient fluid control. Here are common questions about valve types, materials, specifications, and applications to help you find the best valve solution for your project.
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How do I select the correct valve size and pressure rating?
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What industries can industrial valves be used in?
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Do you provide customized valves and OEM services?