• Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve

Lug Type Butterfly Valve

A Lug Butterfly Valve is a type of valve commonly used in piping systems for regulating or controlling the flow of fluids. It is a variant of the butterfly valve that features lug-style threaded connections on both sides of the valve body, which allows it to be mounted between two flanged pipe ends without the need for additional support.
Size
DN40-DN1200
Flange
PN6/PN10/PN16/150LB/10K/Table D /Table E
Design
EN593/API609/BS5155/ISO5211/EN1092
Mounting Flange
ISO 5211
Testing Standard
API598 ISO5208 EN12266-1
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve
  • Lug Type Butterfly Valve

Description

Lug Connection: The valve has threaded lugs on both sides of the valve body, allowing the valve to be bolted directly to the pipe flanges. This makes it suitable for applications where the valve may need to be isolated and removed without affecting the rest of the system.

Bidirectional Flow: The lug butterfly valve can be used in both directions, which is beneficial in systems where the direction of flow may change or needs to be controlled from either direction.

Compact Design: Like other butterfly valves, the lug butterfly valve has a compact and lightweight design compared to other valve types, making it ideal for applications with limited space.

Quick Operation: The butterfly valve is typically operated by a hand lever, Gear Box,electric actuator, or pneumatic actuator, offering quick and easy operation.

Low Pressure Drop: These valves are designed to offer minimal resistance to fluid flow, reducing energy consumption and optimizing system efficiency.

Corrosion and Wear Resistance: Lug butterfly valves can be made from various materials, such as stainless steel, cast iron, and ductile iron, which offer good resistance to corrosion and wear, depending on the application.

Applications:

  • Water Treatment: Used to control flow in water and wastewater treatment plants.
  • HVAC Systems: Used in heating, ventilation, and air conditioning systems to regulate air flow.
  • Piping Systems: Common in industries like chemical, food processing, and oil & gas for isolating and controlling fluid flow.
  • Fire Protection: Utilized in fire suppression systems to isolate pipelines.

Advantages:

  • Ease of Maintenance: The lug design allows the valve to be replaced or serviced without removing the entire pipeline, which is useful in systems where the pipeline cannot be easily disconnected.
  • Flexibility: The valve can be mounted between two flanges, or between a flange and a blind flange, providing more installation flexibility than other valve types.
  • Compactness: These valves are space-efficient and generally lighter than other valve types like gate or ball valves.

 Working/Testing Pressure
 


             Size              DN          40mm-300mm        350mm-1200mm
            Inch            1-1/2''-12''               14''-24''
                                   Working               16bar                 10bar
          Testing           Shell                24bar                 15bar
          Seal              17.6bar                 11bar

 Working Temperature    

     Seat Material             EPDM             NBR          FKM            PTFE
     Temperature      -10℃ to 120℃       -10℃ to 80℃      -15℃ to 200℃     -25℃ to 180℃

Material Specification

           Part          Material 
          Body        Cast Iron  Ductile Iron  WCB  CF8 CF8M  CF3M Duplex Steel  Al-Bronze 
           Disc       Ductile Iron   CF8 CF8M CF3M   Duplex Steel   Al-Bronze   Harlar Coated 
           Shaft                          SS410  SS416  SS420  SS431  SS316 17-4PH  
           Seat                                              EPDM NBR PTFE FKM  Silicone 
       Bushing                                         FRP   PTFE   Bronze 
           Lever                       Malleable Iron         Carbon Steel    Aluminum    SS316
        Gear Box                                    Ductile Iron         Aluminum    SS316 


 Corrosion Protection    

Epoxy Resin Powder Spray,The minimum thickness is not less than 300 microns  

 Disc Options   

  Through shaft with Pin
  Pinless disc 
  Slim disc concentric design(DN50-DN350)

 Seat Options   

Cartridge rubber seat 
Tongue and Groove/Replaceable Seat




            NOTE:
           *The shaf end can be doubl D and key connecton. From DN700 and above, the shaf end is double key type.
          *The flange connecton of the above table can be DIN2501 PN16, ASME B16.47-A 125/150LB, BS4504 PN10/PN16, JIS 10K,Table D ,Table E 
          * DN400’s valve face to face can be 85.7mm & 102mm. DN450’s valve face to face can be 104mm & 114mm

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