What is Groove Signal Butterfly Valve
The grooved signal butterfly valve is a butterfly valve that connects to pipelines via grooved clamps and integrates a signal feedback device. It can monitor the valve's opening and closing status in real time and transmit signals to the control system or alarm device, enabling remote monitoring and automated management.
Structural Features
Grooved Clamp Connection: Utilizing a clamp connection, it eliminates the need for flange bolts, allowing for quick installation. It is suitable for flexible pipelines and can absorb thermal expansion and contraction caused by temperature changes, reducing installation and maintenance costs.
Signal Feedback Device: Integrating a microswitch or cam mechanism, it drives the butterfly plate to rotate via a worm gear transmission device, providing real-time feedback on the valve's opening and closing status ("on" or "off" electrical signal) to the control system.
Sealing Design:
Centerline Seal: Low torque, excellent sealing performance, suitable for low-pressure, normal-temperature environments.
Triple C-type Rubber Seal: Achieves bidirectional sealing, zero leakage in gas tests, suitable for solid particulate media control.
Actuation Method: Supports manual, worm gear, electric, and pneumatic operation to meet different operating conditions.
Material Selection:
Valve Body: Primarily constructed from ductile iron or thick-walled seamless carbon steel tubing, offering high strength and durability.
Sealing Material: Selected based on media characteristics, using rubber (EPDM, NBR, etc.), polytetrafluoroethylene (PTFE), or metal seals.
Working Principle
Opening/Closing Control: The butterfly plate is driven to rotate via a worm gear transmission device, achieving valve opening and closing.
Signal Feedback: When the butterfly plate rotates to the predetermined position, the cam mechanism triggers a microswitch, outputting "on" or "off" electrical signals to display the valve's open/closed status.
Application Scenarios
Fire Protection Systems:
As a key component of automatic sprinkler systems, it is linked with water flow indicators, alarm valves, etc., providing real-time feedback of valve status to the fire control center.
Installed on the water supply side and system side for easy system maintenance and commissioning.
Industrial Piping:
Used in petroleum, chemical, and steel industries to cut off or regulate the transport of gases, liquids, and solid powders.
Used in air conditioning, gas, and water treatment pipelines to control fluid flow.
Special Operating Conditions:
Bottom Discharge Valve: Used for controlling solid materials such as cement silos and stone powder silos, preventing jamming.
Explosion-proof Environment: Explosion-proof electric or pneumatic actuators are available to meet safety requirements.
Selection Considerations
Operating Conditions:
Media Characteristics: Select sealing materials based on fluid type (gas, liquid, particulate/corrosive media).
Temperature and Pressure: Select metal-sealed butterfly valves for high-temperature media; for low-temperature media, pay attention to material brittleness.
Structural Types:
Center-line Butterfly Valve: Suitable for low-pressure, normal-temperature applications without stringent sealing requirements.
Triple-eccentric Butterfly Valve: Resistant to high temperatures and pressures, suitable for harsh operating conditions (such as steam and oil/gas pipelines).
Connection Methods:
Grooved: Quick installation, suitable for pipelines with limited space.
Flanged: Easy to install and disassemble, good sealing performance, suitable for high-pressure, large-diameter pipelines.
Operation Methods:
Manual Operation: Suitable for small-diameter applications or applications where frequent operation is not required.
Electric Actuators: Used for automated control or remote operation.
Pneumatic Actuators: Suitable for explosion-proof environments or rapid opening and closing requirements.
Sealing Class:
Center-line Butterfly Valve: Typically Class VI (minor leakage is permissible).
Triple-eccentric Butterfly Valve: Can reach Class V or zero leakage (metal hard seal).
Maintenance Methods
Regular Inspection:
Check connections and seals for proper function. Address any looseness or leakage promptly.
Clean debris and contaminants from inside the valve to ensure smooth and normal operation.
Seal Maintenance:
Inspect sealing rings and sealing surfaces for wear or damage. Replace if necessary.
For butterfly valves that have not been used for a long time, conduct a trial run to ensure normal operation before putting them into use.
Lubrication and Corrosion Prevention:
Use a dedicated lubricant to ensure the valve's normal service life.
Regularly paint the valve to prevent corrosion and oxidation.
Operating Procedures:
Avoid excessive opening and closing to prevent damage to the butterfly plate and sealing surfaces.
When disassembling, pay attention to the installation position and bolt sequence to facilitate subsequent installation.
Storage Requirements:
Store in a dry indoor place, with the valve plate slightly open (4°–5°) to prevent deformation of the sealing surface.
Groove Signal Butterfly Valve factory
