Another name for butterfly valve is flap valve, which is a kind of regulating valve with simple structure. According to the driving method, electric butterfly valve can be divided into various types. The one we are going to explain today is the electric butterfly valve. It is a very common type, easy to operate and simple in structure. Let’s take a look at the functions and advantages of this butterfly valve.
Electric butterfly valve consists of electric actuator and butterfly valve, so it has the advantages of simple operation and simple structure of butterfly valve. The function principle of electric butterfly valve: through the electric device to drive the valve stem, the butterfly plate produces 90° rotational movement to open and close the valve. The principle of electric actuator is actually very simple. Just like the scraper used in daily life, the energy source is electric power, which drives the valve plate to open and close the valve and circulate or stop the fluid.
The electric actuator of electric butterfly valve can be divided into switching type and regulating type. The switching type electric butterfly valve plays the role of switching; the regulating type electric butterfly valve plays the role of regulating the flow, which can accurately adjust the flow to the thousandth degree, and is also a kind of valve with higher price. Valve as a device installed in the pipeline, if the field check its switching status seems unrealistic, so there is a feedback signal. The regulating type itself has a feedback signal, and the switching type can choose whether to install a feedback signal according to the specific needs of the customer.
Advantages of electric type butterfly valve
1.Electric multi-turn actuator:Electric multi-turn actuator is one of the commonly used and reliable actuator types. It uses a single-phase or three-phase motor to drive the gear or worm gear to drive the stem nut, and the stem nut makes the stem move to open or close the valve. The main advantage of this type of actuator is that all components are installed in one housing and all basic and advanced functions are integrated in this waterproof, dustproof and explosion-proof housing.
2.Electric single rotary actuator: This actuator is similar to electric multi-turn actuator. The main difference is that the actuator finally outputs 1/4 turn to record 90 degrees of motion. The single rotary actuator is compact and can be installed on small size valves, and the output torque is usually up to 800 kg. In addition, due to the small power supply required, batteries can be installed for fail-safe operation.
3. Fluid-driven multi-rotary or linear output actuators:This type of actuator is often used to operate straight-through valves (globe valves) and gate valves, which use pneumatic or hydraulic operation. Simple construction, reliable operation, and easy to implement fail-safe operation mode.
Advantages:Electric actuators have the advantages of easy energy access, fast signal transmission, long transmission distance, convenient centralized control, high sensitivity, high precision, easy coordination with electric regulators, and simple installation and wiring. The disadvantages are complex structure, small thrust, higher average failure rate than pneumatic actuators, and suitable for places with low explosion-proof requirements and insufficient gas source.
Butterfly valves are used to control the flow of fluids through a piping system. There are three main types of butterfly valves: resilient seated, high performance, and triple offset. Here are the key differences between these three types:
Resilient Seated Butterfly Valves:
Resilient seated butterfly valves are the most common type of butterfly valve. They have a flexible rubber seat that provides a tight seal against the disc when the valve is closed. Resilient seated butterfly valves are generally used for low-pressure applications and are typically less expensive than high-performance and triple-offset butterfly valves.
Resilient Seated Butterfly Valves application
Resilient seated butterfly valves are commonly used in a variety of applications where low-pressure and moderate temperature fluid control is required. Some common applications for resilient seated butterfly valves include:
Water treatment plants: Resilient seated butterfly valves are often used in water treatment plants for regulating the flow of water and other fluids through various stages of the treatment process.
HVAC systems: Resilient seated butterfly valves are used in heating, ventilation, and air conditioning (HVAC) systems for regulating the flow of air and water through the system.
Industrial applications: Resilient seated butterfly valves are used in many industrial applications, including chemical processing, food and beverage, pharmaceutical, and pulp and paper industries.
Fire protection systems: Resilient seated butterfly valves are commonly used in fire protection systems for regulating the flow of water and other fire-fighting agents through sprinkler systems and fire hydrants.
In general, resilient seated butterfly valves are suitable for applications that require a simple and cost-effective solution for controlling low-pressure fluid flow.
High-Performance Butterfly Valves:
High-performance butterfly valves have a metal seat and are designed for high-pressure applications. They have a tighter seal than resilient seated butterfly valves, which makes them ideal for applications where leakage cannot be tolerated. High-performance butterfly valves also have a higher temperature range than resilient seated butterfly valves.
High Performance application
High-performance butterfly valves are designed for use in applications where higher pressures, temperatures, and tighter shut-off requirements are necessary. Here are some common applications for high-performance butterfly valves:
Oil and gas industry: High-performance butterfly valves are commonly used in the oil and gas industry for controlling the flow of various fluids, including crude oil, natural gas, and refined petroleum products. These valves are designed to withstand high pressures and temperatures and can operate reliably in harsh environments.
Power generation: High-performance butterfly valves are used in power generation plants to control the flow of steam, gas, and other fluids in turbines and boilers. These valves are designed to handle high temperatures and pressures and provide a tight seal to prevent leaks.
Chemical processing: High-performance butterfly valves are used in the chemical processing industry for regulating the flow of corrosive and hazardous fluids. These valves are made of materials that can withstand corrosion and can operate at high temperatures and pressures.
Water treatment plants: High-performance butterfly valves are also used in water treatment plants for regulating the flow of water and other fluids at high pressures and temperatures.
Overall, high-performance butterfly valves are suitable for applications that require a more robust and reliable solution for controlling fluid flow at high pressures and temperatures with a tighter shut-off requirement.
Triple Offset Butterfly Valves:
Triple offset butterfly valves are designed for high-performance applications where tight shut-off is critical. They have a unique sealing mechanism that eliminates rubbing and wear between the seat and disc, which provides a tight seal even at high temperatures and pressures. Triple offset butterfly valves are typically more expensive than resilient seated and high-performance butterfly valves.
Triple Offset Butterfly Valves application
Triple offset butterfly valves are designed for use in critical applications where high performance, tight shut-off, and low leakage rates are essential. Here are some common applications for triple offset butterfly valves:
Oil and gas industry: Triple offset butterfly valves are commonly used in the oil and gas industry for controlling the flow of various fluids, including crude oil, natural gas, and refined petroleum products. These valves are designed to provide a tight seal even at high pressures and temperatures, which makes them ideal for critical applications.
Chemical processing: Triple offset butterfly valves are used in the chemical processing industry for regulating the flow of corrosive and hazardous fluids. These valves are made of materials that can withstand corrosion and can operate at high temperatures and pressures with a tight shut-off.
Power generation: Triple offset butterfly valves are used in power generation plants to control the flow of steam, gas, and other fluids in turbines and boilers. These valves are designed to handle high temperatures and pressures and provide a tight seal to prevent leaks.
Pulp and paper industry: Triple offset butterfly valves are used in the pulp and paper industry for controlling the flow of various chemicals and liquids used in the manufacturing process. These valves are designed to handle harsh chemicals and high temperatures with a tight shut-off.
Overall, triple offset butterfly valves are suitable for critical applications that require high performance, tight shut-off, and low leakage rates, especially in harsh environments where corrosive and hazardous fluids are being used.
General selection principles of valve materials for air conditioning
1. The pressure resistance grade, operating temperature range, corrosion resistance and material of the valve body should not be lower than the requirements of the process connection piping material. The manufacturer’s definitive products should be preferred. Cast steel or forged steel valve body is usually used for selection.
Water vapor or moisture with high water content and flammable fluids, cast iron valve body should not be used.
3. When the ambient temperature is lower than -20 ℃, cast iron valve body should not be selected.
4. Valve internal parts should be able to resist corrosion, fluid corrosion, fluid throttling caused by cavitation damage.
Valve internal parts of the choice of materials
1. Non-corrosive fluid selection of 1Crl8Ni9, 1Crl8Ni9Ti or other stainless steel.
2. Corrosive fluids should be based on the type of fluid, concentration, temperature and pressure, containing oxidants and flow rate to choose the appropriate corrosion-resistant materials. Commonly used corrosion-resistant materials are 1Crl8Ni9Ti, 0Crl8Nil2M02Ti, 20# alloy, Hastelloy and titanium steel.
3. For the working conditions with high flow rate and serious scouring, wear-resistant materials should be selected. For example, 9Crl8 and 17-7PH heat treatment, and chromium-molybdenum steel, G6X and other materials with strong curing oxide layer, toughness and fatigue strength.
4. Material selection for severe wear.
When the fluid flash, cavitation and containing particles, the spool and seat surface should be hardened. When the fluid temperature is too high, the pressure difference is too large, the spool and seat should be surface hardening. For example, the surface weld Stellite alloy.
Third, the regulating valve leakage and flow.
According to the process requirements for leakage, choose the type of valve with different levels of leakage. In general, the leakage of straight-through single-seat valves should be less than or equal to the rated 01% or less, and the leakage of double-seat valves needs to be below 0,1% of the rated c value.
1. Ball valves and ordinary butterfly valves do not require flow direction, you can choose any flow direction.
2. Three-way valve, venturi angle valve, double-sealed sleeve valve with balance hole has specified a certain flow direction, generally can not be changed.
3. Single-seat valves, angle valves, high-pressure valves, single-sealed sleeve valves without balance holes, small flow rate adjustment valves, etc. The flow direction of the regulating valve should be selected according to different working conditions.
A butterfly valve is a type of flow control device that regulates the flow of fluid through a pipe. It consists of a circular disk that rotates within a valve body. The disk has a hole in the center, and as the disk is rotated, the hole aligns or misaligns with the pipe, allowing or blocking the flow of fluid. When the disk is rotated so that the hole is in line with the pipe, fluid can flow freely through the valve. When the disk is rotated so that the hole is perpendicular to the pipe, the flow of fluid is blocked. The valve is operated by a handle or lever that rotates the disk, or by an electric or pneumatic actuator.
A butterfly valve is a type of flow control device that regulates the flow of a fluid (such as water, air, or steam) through a pipe or duct. It consists of a circular disc (the “butterfly”) that rotates within a cylindrical body to open or close the flow. Butterfly valves are often used in industrial and commercial applications because they are relatively inexpensive, easy to install and maintain, and can handle high-pressure and high-temperature fluids. They are also commonly used in HVAC systems and plumbing applications.
what is a double offset butterfly valve
In a double offset butterfly valve, the centerline of the disc is offset from both the centerline of the valve body and the centerline of the shaft. This design allows for the disc to open and close at an angle, which reduces the amount of friction between the disc and the valve seat. This, in turn, reduces the torque required to operate the valve and increases the flow capacity. Additionally, the double offset design also reduces the wear on the valve seat, increasing the overall lifespan of the valve. These valves are commonly used in larger diameter piping systems, high-pressure and high-temperature applications, and in industries such as power generation, oil and gas, and water treatment.
In this post, We will tell you that butterfly valves are a type of valve used to regulate the flow of fluid through a pipe. In addition, they are typically made of metal or plastic. Butterfly valves application could be in a variety of applications, including piping systems for water, oil, gas, and other fluids. Certainly, Butterfly valves include wafer butterfly valve and lug type. Today, let us read related knowledge about Butterfly type valves.
What is butterfly valve?
Following the question as what butterfly valves are? We will explain that generally, butterfly valves are a type of valve that use to control the flow of fluid through a pipe. Normally, insiders name this valves for the butterfly-like shape of their valve leaflets. Especially, uses of butterfly valves are often in applications where a quick and easy way to start or stop the flow of fluid.
How butterfly valves work?
Let us tell you, butterfly valve works by using a disc that is attached to a rod. When the valve is open, the disc is in the open position. When close the valve, the disc is in the closed position. Then, by using a lever to move The disc.
The different types of valves of butterfly
Actually, butterfly type is a type of valve that use a disc to control the flow of fluid through a pipe. And mounted the disc on a hinge, so that when opened and closed the valves, it can be like a butterfly’s wings. There are several different types of butterfly valves, each with its own advantages and disadvantages. The most common type of butterfly valve is the wafer valve. Certainly, wafer type valves are thin, so they are easy to install in tight spaces. They also have a low pressure drop, so ideally, wafer butterfly valve for gas and for high-volume applications.
Wafer Butterfly Valve: An Essential Piece of Industrial Piping Equipment
A wafer butterfly valve medium pressure is a key piece of industrial piping equipment that used to regulate and control the flow of fluids through a system. This type of valve is a disk-type valve that has a rotating disk that placed in the center of the valve body. The disk attached to a shaft through a handwheel, gearbox, or electric motor to turn. After rotates the disk, it opens or closes the valve, allowing or stopping the flow of fluid. If consider for butterfly valve wafer type quotes, you have to contact with China butterfly valves manufactuer for lower prices.
1. What is a wafer type butterfly valves?
About wafer-type, Actually, This kind of butterfly valve is a type of valve used to control the flow of fluids through a pipe. Also, it consists of a flat disk-shaped valve body with a pair of hinged wings or flaps called “butterflies” that use them to open and close the valve. We typically installed the valve in a pipeline between two flanges and operated it through turning a handle or lever.
2. What are the benefits of using a wafer butterfly valve?
When use about wafer butterfly valves, they offers many benefits over other types of valves. Some of these benefits include: • Reduced weight and size – Wafer butterfly valves are often much smaller and lighter than other types of valves, making them easier to install and operate. • Ease of use – Wafer butterfly valves are typically very easy to open and close, even under high pressure conditions. • Durability – Wafer type butterfly valves are typically quite durable and can withstand a great deal of wear and tear. • Low cost – They are often less expensive than other types of valves.
3. What are the key features of a wafer valves?
The wafer-type butterfly valve from China wafer butterfly valve manufacturer is a type of valves. And its uses a disc to control the flow of fluid through a pipe. Accurately mount the disc on a shaft, and when the valve is opened, At the same time positioned the disc so that the fluid can flow through the opening in the middle of the disc. When tried to close the valve, Simultaneously the disc as positioned so that the fluid cannot flow through the opening.
One of the key features of a wafer butterfly valve is its low profile. This makes it a good choice for applications where there is the limited space in the pipe. Another key feature is its tight seal. When positioned the disc so that the edges of the opening come into contact with the edges of the pipe, creating a seal that prevents the fluid from flowing through.
4. How a wafer valve typically used in industrial piping?
As well-known in this industry, typically use the wafer butterfly valves for industrial piping to regulate the flow of liquids and gases. inserted the valve into the pipe. And rotating the disc-shaped actuator to open or close it. This action moves the two valve seats either parallel or perpendicular to the flow of fluid, which allows or blocks the passage of fluid through the valves.
