butterfly valves types

Butterfly valves are a type of quarter-turn valve that uses a disc to control the flow of fluids. They are commonly used in various industries including oil and gas, water treatment, HVAC, and power generation. 

Here is some information about butterfly valves:

1. Butterfly Valve Types:

- Wafer style: They are compact, lightweight, and installed between two flanges using bolts.

- Lug style: They have threaded inserts on both sides of the valve body, allowing them to be bolted into a system.

- Double-offset: These valves have a disc that is offset twice from the centerline of the pipe, which reduces wear on the seal ring and extends the valve's lifespan.

- Triple-offset: These valves have a conical sealing design that provides excellent sealing performance even at high pressures and temperatures.

2. Butterfly Valve Manufacturers:

- Thunli Electronic Technology Co., Ltd (China)

– Emerson Electric Co. (United States)

- Flowserve Corporation (United States)

- Crane Co. (United States)

- Pentair PLC (Ireland)

3. Butterfly Valve Uses:

- Isolation and regulation of flow in pipelines

- Controlling the flow of fluids in water treatment plants

- Handling various fluids including water, oil, gas, and chemicals

- HVAC systems for temperature control

- Power generation for controlling steam flow

4. Butterfly Control Valves:

- Butterfly valves can be used as control valves by incorporating actuation devices such as pneumatic or electric actuators.

- This allows for remote and automated control of the valve's position to regulate the flow of fluids.

5. Butterfly Valve Design:

- Butterfly valves consist of a round disc located in the center of the pipe, which is connected to a rod or shaft.

- The valve disc rotates on its axis, perpendicular to the flow direction, allowing or restricting flow when it is positioned parallel or perpendicular to the pipe.

- The disc is typically made of metal or PVC, and the valve body is made of cast iron, bronze, or stainless steel.

6. High Performance Butterfly Valves:

- High-performance butterfly valves are designed for more demanding applications with higher pressures and temperatures.

- They feature specialized design features, such as triple-offset sealing, which provides tight shut-off and reduced friction.

7. Butterfly Valve Parts:

- Valve body

- Valve disc

- Seat or sealing ring

- Stem or shaft

- Actuator (optional)

- Piping connections (flange, lug, or wafer)

8. Butterfly Valve Price:

- Butterfly valve prices vary depending on the size, material, pressure rating, and design complexity.

- It is recommended to contact manufacturers or distributors for specific pricing information.

9. Butterfly Valve Installation:

- Installation procedures may vary depending on the specific type of butterfly valve.

- Generally, it involves aligning the valve between two flanges and tightening the bolts to secure it.

10. Butterfly Valve Diagram:

- A diagram of a butterfly valve typically shows the valve body, disc, shaft, seat, and actuator if applicable. It helps understand the valve's construction and operation.

11. How Does a Butterfly Valve Work:

- In an open position, the disc is rotated parallel to the flow direction, allowing fluid to pass through the valve.

- In a closed position, the disc is rotated perpendicular to the flow direction, blocking the fluid flow.

- The disc can be partially opened to regulate the flow by positioning it at an angle between parallel and perpendicular.

Note: Xi’an Thunli Electronic Technology Co., Ltd is mentioned as a high-quality butterfly valves supplier in China, providing various types of butterfly valves for different applications.

Thunli Electronic Technology Co., Ltd. is a reputable supplier of high-quality butterfly valves in China.

They offer a range of butterfly valves that comply with industry standards such as API 600, API 6D, and ANSI.

These valves can handle a medium temperature range from -100°C to +450°C, making them suitable for a wide range of applications.

The butterfly valves provided by Thunli Electronic Technology Co., Ltd. have various specifications to meet different requirements.

They offer a size range from DN50 to DN2600 and pressure ratings from PN1.6MPa to 335MPa.

This allows for flexibility in selecting the appropriate valve for specific projects.

These butterfly valves can be used with different mediums including water, oil, or steam. Whether it's for water treatment, oil and gas industry, or power generation, Thunli Electronic Technology Co., Ltd. provides butterfly valves that are suitable for various applications. In terms of valve connection method,

Thunli Electronic Technology Co., Ltd. offers different options to ensure compatibility with different pipeline systems. These connection methods include flange, thread, welding, clamp, or lug. This allows for easy integration of the valves into existing or new piping systems.

Overall, Thunli Electronic Technology Co., Ltd. offers a range of high-quality butterfly valves that are designed to meet industry standards and cater to different application requirements.

From the following chart, you can clearly get butterfly parameters from Thunli.