Construction

Butterfly?valves are?typically?constructed?with?a?cast?iron?or?stainless?steel?body?and?a?rubber?or?plastic?disc.?The?disc?is?attached?to?a?shaft

that?is?supported?by?bearings?at?each?end.?The?shaft?is?turned?by?a?handle?or?actuator,?which?can?be?manual?or?automated.

Advantages

Butterfly?valves?offer?a?number?of?advantages?over?other?types?of?valves,?including:

• Compact size: Butterfly valves are relatively small and lightweight, making them easy to install and maintain.
• Low pressure drop: The streamlined design of the butterfly valve results in a low pressure drop, which can save energy costs.
• Quick operation: Butterfly valves can be opened or closed quickly, making them ideal for applications where rapid flow control is required.
• Low?cost:?Butterfly?valves?are?relatively?inexpensive?to?manufacture?and?purchase,?making?them?a?cost-effective?option?for?many?applications.

Applications

Butterfly?valves?are?used?in?a?wide?variety?of?applications,?including:

• HVAC systems: Butterfly valves are used to control the flow of air and water in HVAC systems.
• Industrial plants: Butterfly valves are used to control the flow of fluids in industrial plants, such as oil, gas, and chemicals.
• Municipal water systems: Butterfly valves are used to control the flow of water in municipal water systems.
• Wastewater?treatment?plants:?Butterfly?valves?are?used?to?control?the?flow?of?wastewater?in?wastewater?treatment?plants.

China Butterfly Valve

China?is?a?major?manufacturer?of?butterfly?valves.?China butterfly?valves?are?known?for?their?high?quality?and?low?cost.?Many?of?the?world’s?leading?butterfly?valve?manufacturers have

operations?in?China.

Butterfly Valve Factory

There?are?many?butterfly?valve?factories?in?China.?Some?of?the?most?reputable?butterfly?valve?factories?include:

• Lixin Valve Group Co., Ltd
• Tianjin Tianfa Valve Co., Ltd.
• Baoyuan Valve Co., Ltd.
• Lishen?Valve?Co.,?Ltd.

These?factories?produce?a?wide?range?of?butterfly?valves,?including:

• Single disc butterfly valves
• Double disc butterfly valves
• Lug butterfly valves
• Wafer?butterfly?valves

Butterfly Valve Selection

When?selecting?a?butterfly?valve,?it?is?important?to?consider?the?following?factors:

• Size: The size of the valve should be appropriate for the diameter of the pipe in which it will be installed.
• Pressure rating: The pressure rating of the valve should be greater than the maximum pressure that will be applied to it.
• Temperature rating: The temperature rating of the valve should be greater than the maximum temperature that the fluid will reach.
• Media compatibility: The valve should be compatible with the fluid that will be flowing through it.
• Actuation?type:?The?valve?should?be?actuated?in?a?manner?that?is?compatible?with?the?application.

Butterfly Valve Installation

Butterfly?valves?are?typically?installed between?two?flanges.?The?flanges?are?bolted?together,?and?the?valve?is?inserted?between?them.

The?valve?is?then?secured?to?the?flanges?using?bolts?or?studs.

It is important to ensure that the valve is installed in the correct orientation. The flow arrow on the valve body should point in the

direction of the flow.

Butterfly Valve Maintenance

Butterfly valves require minimal maintenance. The only regular maintenance task is to lubricate the shaft bearings. The frequency of

lubrication will depend on the application.

It?is?also?important?to?inspect?the?valve?regularly?for?leaks.?If?a?leak?is?detected,?the?valve?should?be?repaired?or?replaced.

Butterfly Valve Troubleshooting

The?following?are?some?common?butterfly?valve?troubleshooting?tips:

• Valve will not open or close: The valve may be stuck due to corrosion or debris. Try lubricating the shaft bearings. If the valve still does not open or close, it may need to be replaced.
• Valve leaks: The valve may leak due to a damaged disc or seat. The valve should be repaired or replaced.
• Valve is noisy: The valve may be noisy due to cavitation. This can be reduced by increasing the pressure drop across the valve.

Butterfly Valve Resources

The?following?are?some?useful?butterfly?valve?resources:

Butterfly Valve Wikipedia Article

Butterfly Valve Lixin

For More Detailed Information, Visit: Lixin Valve Group