Advantages of butterfly valve:
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1. Convenient opening and closing, labor saving, low fluid resistance, and can be operated frequently.
2. The structure is simple, the external dimensions are small, the structural length is short, the volume is small, and the weight is light. It is suitable for valves with large diameter.
3. Mud can be transported, and the least liquid is accumulated in the pipe mouth.
4. Under low pressure, a good seal can be achieved.
5. Good adjustment performance.
6. When fully opened, the effective flow area of the valve seat channel is large, and the fluid resistance is small.
7. The opening and closing torque is small, because the butterfly plates on both sides of the rotating shaft are basically the same under the action of the medium, and the direction of generating torque is opposite, so the opening and closing are more labor-saving.
8. The sealing surface material is generally rubber, plastic, so the low-pressure sealing performance is good.
9. Easy installation.
10. Flexible and labor-saving operation, you can choose manual, electric, pneumatic, hydraulic mode.
Disadvantages of butterfly valve:
1. The operating pressure and operating temperature range are small.
2. Poor sealing.
Butterfly valves can be divided into offset plate type, vertical plate type, inclined plate type and lever type according to the structure.
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According to the sealing form, it can be soft-sealed or hard-sealed. The soft seal type generally uses a rubber ring seal, and the hard seal type usually uses a metal ring seal.
According to the connection type, it can be divided into flange connection and wafer connection; according to the transmission mode, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
TH Valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil, Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D
related news /knowledge:
A Butterfly Valve is a shut-off valve with a relatively simple construction. In a closed position, the disc blocks the valve bore while in an open position, the disc turn allows flow. A quarter turn takes the valve from fully open to a fully closed position or the opposite, and thus the butterfly valve allows for quick opening and closure.
Butterfly valves can be used for a broad range of applications within water supply, wastewater treatment, fire protection, and gas supply, in the chemical and oil industries, in fuel handling systems, power generation etc. Some of the advantages for this type of valve are the simple construction not taking up too much space, and the lightweight and lower cost compared to other valve designs.
The valves can be operated by handles, gears or actuators according to any specific need.
Butterfly valves have been around for a long time, and are used for a variety of applications. They made their first appearance during the 1930s, and have been utilized by several industries ever since.
Often made out of cast iron, butterfly valve’s name is based on the functionality of its disc. There are a few different types of butterfly valves, however, they fall into two basic types – Lug and Wafer valves.
The lug version of the butterfly valve’s design is similar to a 3-piece ball valve in that one end of the line can be taken off without having an effect on the opposing side. This can be executed by using threaded inserts, flanges, along with two sets of lugs (bolts) that don’t utilize nuts since each flange features its own bolts. It’s also important to note that you don’t need to shut down the entire system in order to clean, inspect, repair, or replace a lug butterfly valve (you would need to with a wafer butter valve).
A wafer butterfly valve’s function is to retain a seal to protect against dual-directional pressure differential in the flow of fluid. In other words, the wafer version of butterfly valves was designed to hold a tight seal, safeguarding against bi-directional pressure differential in order to avoid any backflow in systems that have been manufactured for uni-directional flow.
This is accomplished by using a tightly fitted seal, such as an O-ring, gasket, precision machined, along with a flat valve face on the downstream and upstream sections of the valve.
Both lug and wafer butterfly valves are used in a number of applications for industrial sectors that include food processing, pharmaceutical, chemical, oil, water as well as wastewater management.
Butterfly valves, for the most part, have replaced ball valves in a lot of industries. This is especially the case for those dealing with petroleum because they are less expensive and easy to install. It’s important to note that pipelines that contain butterfly valves can’t be ‘pigged’ for cleaning. “Pigging” is the process of making use of devices referred to as “pigs” to carry out a variety of maintenance operations.
Advantages of butterfly valve:
1. Convenient opening and closing, labor saving, low fluid resistance, and can be operated frequently.
2. The structure is simple, the external dimensions are small, the structural length is short, the volume is small, and the weight is light. It is suitable for valves with large diameter.
3. Mud can be transported, and the least liquid is accumulated in the pipe mouth.
4. Under low pressure, a good seal can be achieved.
5. Good adjustment performance.
6. When fully opened, the effective flow area of the valve seat channel is large, and the fluid resistance is small.
7. The opening and closing torque is small, because the butterfly plates on both sides of the rotating shaft are basically the same under the action of the medium, and the direction of generating torque is opposite, so the opening and closing are more labor-saving.
8. The sealing surface material is generally rubber, plastic, so the low-pressure sealing performance is good.
9. Easy installation.
10. Flexible and labor-saving operation, you can choose manual, electric, pneumatic, hydraulic mode.
Disadvantages of butterfly valve:
1. The operating pressure and operating temperature range are small.
2. Poor sealing.
Butterfly valves can be divided into offset plate type, vertical plate type, inclined plate type and lever type according to the structure.
According to the sealing form, it can be soft-sealed or hard-sealed. The soft seal type generally uses a rubber ring seal, and the hard seal type usually uses a metal ring seal.
According to the connection type, it can be divided into flange connection and wafer connection; according to the transmission mode, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
TH Valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil, Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D
related news /knowledge:
A Butterfly Valve is a shut-off valve with a relatively simple construction. In a closed position, the disc blocks the valve bore while in an open position, the disc turn allows flow. A quarter turn takes the valve from fully open to a fully closed position or the opposite, and thus the butterfly valve allows for quick opening and closure.
Butterfly valves can be used for a broad range of applications within water supply, wastewater treatment, fire protection, and gas supply, in the chemical and oil industries, in fuel handling systems, power generation etc. Some of the advantages for this type of valve are the simple construction not taking up too much space, and the lightweight and lower cost compared to other valve designs.
The valves can be operated by handles, gears or actuators according to any specific need.
Butterfly valves have been around for a long time, and are used for a variety of applications. They made their first appearance during the 1930s, and have been utilized by several industries ever since.
Often made out of cast iron, butterfly valve’s name is based on the functionality of its disc. There are a few different types of butterfly valves, however, they fall into two basic types – Lug and Wafer valves.
The lug version of the butterfly valve’s design is similar to a 3-piece ball valve in that one end of the line can be taken off without having an effect on the opposing side. This can be executed by using threaded inserts, flanges, along with two sets of lugs (bolts) that don’t utilize nuts since each flange features its own bolts. It’s also important to note that you don’t need to shut down the entire system in order to clean, inspect, repair, or replace a lug butterfly valve (you would need to with a wafer butter valve).
A wafer butterfly valve’s function is to retain a seal to protect against dual-directional pressure differential in the flow of fluid. In other words, the wafer version of butterfly valves was designed to hold a tight seal, safeguarding against bi-directional pressure differential in order to avoid any backflow in systems that have been manufactured for uni-directional flow.
This is accomplished by using a tightly fitted seal, such as an O-ring, gasket, precision machined, along with a flat valve face on the downstream and upstream sections of the valve.
Both lug and wafer butterfly valves are used in a number of applications for industrial sectors that include food processing, pharmaceutical, chemical, oil, water as well as wastewater management.
Butterfly valves, for the most part, have replaced ball valves in a lot of industries. This is especially the case for those dealing with petroleum because they are less expensive and easy to install. It’s important to note that pipelines that contain butterfly valves can’t be ‘pigged’ for cleaning. “Pigging” is the process of making use of devices referred to as “pigs” to carry out a variety of maintenance operations.