Everything about the handwheel butterfly valve

A handwheel butterfly valve is a product used to open and close or regulate the flow through the steering wheel. So what is a crank butterfly valve? In the article below, let’s learn more about this product line from Bao Tin Steel.

What is a handwheel butterfly valve?

Handwheel butterfly valve, also known as Handwheel Butterfly Valve, is a type of butterfly valve controlled by hand force through rotation. This type of valve can adjust, open, and close the flow in the pipeline system.

Overall, the handwheel butterfly valve is quite similar to the shape of a butterfly. The outer shell is the butterfly body, the valve disc is the butterfly wing, and the shaft forming the handwheel is the butterfly head and antennae.

Why should you use the steering wheel butterfly valve?

It is not without reason that steering wheel butterfly valves are commonly used on the market today. Because they bring good results when used in pipeline systems. After knowing what a handwheel butterfly valve is? Bao Tin Steel will reveal the reasons why you should use this type of valve:

• Designed in many different sizes.
• It is manufactured from many materials, so it can be installed in many different environments.
• Assemble in a lot of space, even in tight spaces.
• With the power assist, the operation is gentle and does not require much effort.
• Ability to regulate the steady flow of fluid, helping to control the rate of flow. Suitable for the needs of many piping systems.
• The product is suitable for pipe sizes up to DN600.
• It can be operated manually, so no accompanying system is needed.
• It brings operational efficiency as well as work productivity.

Technical specifications of a handwheel butterfly valve

• Size: DN50 – DN600
• Body material: Stainless steel, cast iron, steel, plastic,…
• Valve shaft: Made from cast iron, and stainless steel,…
• Connection type: Clamp type, flange
• Valve disc: Stainless steel, plastic, PTFE coated cast iron,…
• Connection standards and working pressure: BS4504 – DIN 2632 (PN10, PN16, PN25), JIS B2220 (10K, 16K), ASME B16.42 (150LB).
• Working environment: water, gas, oil, steam, chemicals,…
  Control: steering wheel (handwheel)

Customers can refer to and buy the product: ShinYi handwheel butterfly valve is officially distributed at Bao Tin Steel.

Structure and operating principle of the handwheel butterfly valve

The handwheel butterfly valve is one of the pipeline devices with a simple structure and operating principle that brings many benefits to users. To better understand the structure and operating mechanism, please continue reading the content below:

Structure of handwheel butterfly valve

Body

The valve stem is the outer circle that covers the inner valve disc. It functions as a frame to help connect the parts and supports the opening and closing operation of the butterfly valve.

Disc

The handwheel butterfly valve disc is circular and fits inside the valve body. In the middle of the valve disc, there will be a stern passing through, dividing the valve disc into two balanced halves capable of rotating from 0 to 90 degrees.

Stern)

The valve stern is in the form of a solid cast block, which has the function of fixing the valve disc, valve body, actuator, and handwheel to create a linkage to adjust the rotating valve shaft. In addition, the valve shaft is also located in the handwheel and gearbox to transmit torque.

 Handwheel

The handwheel (steering wheel) is the part mounted on top; it is round and designed similarly to the steering wheel on a car. This part has the function of affecting the valve disc when rotating in two different directions:

• If it rotates in the same direction, the valve will be locked.
• Rotate counterclockwise to open the valve.

Box

As the name suggests, the power steering gearbox can assist, making the valve opening and closing easier when controlled with hand force on the steering wheel. The gear system in the gearbox will help reduce pressure when acting on the valve.

 Gasket

Located between the valve and valve disc, it is made from elastic materials to reduce friction in the movement of the valve disc when rotating around the axis. Not only that, the sealing gasket also helps limit the risk of fluid leakage in the pipeline system during operation.

Operating principle of the handwheel butterfly valve

Normally, the handwheel butterfly valve is in the closed state. To open the steering wheel butterfly valve, you will turn the steering wheel from right to left (counterclockwise). Each time the steering wheel is turned, the gearbox will move and cause the butterfly valve shaft to rotate. When the valve is fully open, the valve blade will rotate 90 degrees from its original position. In this state, the valve disc lies perpendicular to the valve body and parallel to the fluid flow.

When closing the handwheel butterfly valve, you just need to turn the steering wheel in the opposite direction (clockwise). The steering wheel butterfly valve will close when the valve disc comes into contact with the valve body and is sealed by the sealing gasket. At this time, the valve blade will lie perpendicular to the flow to prevent fluid from passing through.

Classification of popular handwheel butterfly valves on the market

With high applicability, steering wheel butterfly valves are manufactured in a variety of types and designs. Among them, classifying handwheel butterfly valves according to material, connection type, and origin is the most common way.

Below are the popular types of steering wheel butterfly valves today:

Classified by material

Handwheel butterfly valves are manufactured from many different materials, specifically: stainless steel, cast iron, steel, plastic, etc. Each material will be suitable for different systems and working environments.

• Handwheel stainless steel butterfly valve. Usually, use 304 or 316L stainless steel. Stainless steel material has good heat resistance, corrosion resistance, and strength, so it is commonly used in clean water supply systems, chemicals, etc.
• Cylinder-cast iron butterfly valve. This is one of the most popular valves among consumers because it has quite good durability, is low-cost, and is suitable for clean water and compressed air systems. However, the ability to withstand heat – withstand pressure, and withstand pressure is not great. If there is a strong impact, the steering wheel cast iron butterfly valve may be warped, making operation difficult.
• Handwheel steel butterfly valve. If you need a steering wheel butterfly valve to work in high-pressure and temperature environments, steel material is the best choice.
• Handwheel plastic butterfly valve. This is the cheapest butterfly valve line today, mainly made from high-quality PVC, UPVC, etc. materials. This product is often used in chemical pipeline systems and food production,…

Classified by connection type.

Depending on the system, flange, or pipe size, we choose the handwheel butterfly valve connection type.

• Flange handwheel butterfly valve. The valve body is designed with a flange-like rim, helping to connect more tightly to the pipe and limiting the risk of fluid leakage during operation.
• Wafer handwheel butterfly valve. This valve has two threaded holes designed on the valve body, located near the junction between the valve body and valve stem on both sides. To fix the valve, bolts are used to tighten the two flanges that have been welded on both sides of the transmission line.

Classified by origin

Currently, many brands produce crank butterfly valves to meet customer needs. Below is one of the leading brands that produce steering wheel butterfly valves:

• Handwheel butterfly valve brand Y.D.K of Korea
• Handwheel butterfly valve brand Shinyi of China
• Handwheel butterfly valve brand Wonil of Korea
• Handwheel butterfly valve brand BTL of China
• Handwheel butterfly valve brand ARV of Malaysia

You can refer to the Korean brand DHC handwheel butterfly valve in the article: DHC handwheel butterfly valve.

Application of handwheel butterfly valve

Handwheel butterfly valves are one of the most commonly used industrial valves today. They can control and manipulate the medium (water, air, gas, or any liquid in the pipeline). Join Bao Tin Steel to review some common applications of steering wheel butterfly valves:

• Used in clean and domestic water supply systems. Specifically, in the system of residential and industrial zones,…
• Used in wastewater treatment systems in pipes, equipment in industrial parks, cities, residential areas,…
• Suitable for compressed air, oil, etc. systems.
• Used in oil pipelines and material supply systems
• Used in production systems for fresh water, mineral water, bottled water, etc.
• Used for systems that handle corrosive chemical solutions
• Used for fluid systems with high temperatures and high working pressures,

Handwheel butterfly valves appear on clean water pipeline systems that we use every day, so it is no longer too strange. However, not all systems can use this type of valve. You need to consult with professionals to choose the right product. To help the system operate most effectively and safely.

Should you choose a handwheel or hand lever butterfly valve?

A hand lever butterfly valve is a type of butterfly valve that uses a hand lever to control the operation of the valve by pushing to open the valve and pushing to close the valve to allow fluid to pass through or fluids to move. They are often used for sizes from DN50 to DN150.

As mentioned above, what is a crank butterfly valve? The handwheel butterfly valve is a type of butterfly valve that uses a steering wheel to control valve operation by turning the steering wheel to open the valve and turning the steering wheel to close the valve to adjust the fluid flow rate. They are often used in sizes DN50–DN600.

Because the mechanisms of these two types of valves are quite similar, Therefore, many people wonder which product to choose for the system. Which valve product to choose depends on many factors related to the entire system and is not something that can be determined naturally.

In summary, to decide which type of butterfly valve to choose for the system, you need to consider the following basic factors:

• System size
• Investment costs
• Medium (water, steam, gas, gasoline, oil, chemicals, etc.)
• Working pressure
• Installation location,…

Where can I buy genuine, quality handwheel butterfly valves?

Bao Tin Steel Co., Ltd. is proud to be a leading supplier of industrial valves and civil valves in general, and handwheel butterfly valves in particular. All products at Bao Tin Steel are imported from reputable manufacturers.

Not only that, products are strictly inspected before being put into the Bao Tin Steel warehouse. Ensuring quality goods with clear labels, meeting all customer needs.

To buy genuine hand crank butterfly valves, you need good prices and full quality certification, as well as a good warranty policy. Please contact Bao Tin Steel Co., Ltd. for advice and purchasing support.

Above is the entire article on what a handwheel butterfly valve is. Provides readers with knowledge about the concept of hand crank butterfly valves, structure-operating principles, applications, etc. Bao Tin Steel hopes this article will help you better understand steering wheel butterfly valves. As well as choosing a place to buy genuine, quality products.

Tiger Steel is a branch of Bao Tin Steel.