WhenActuated butterfly valve with switch-type designWhen fully open, the only resistance to flow through the valve body is the thickness of the butterfly plate, which is why this valve generates reduced pressure, thereby exhibiting excellent flow control characteristics. The sealing types of butterfly valves mainly include elastic and metallic seals. In elastic sealing valves, the sealing ring can be both embedded in the valve body and adhered to the periphery of the butterfly plate.

Control Circuit

• S Type (Standard)The valve is operated by a switch circuit to open and close, and it outputs a set of active position signals (indicating fully open and fully closed states).

• W Type (Passive Contact Type)Similarly, the switch circuit controls the opening and closing of the valve, while simultaneously outputting a set of passive switch signals indicating the fully open and fully closed positions of the valve. Its structure features two intermediate position switches.

• P Type (Open Signal Type)The switch circuit is used to control the opening angle of the valve, outputting a resistance signal corresponding to the opening position. This type of butterfly valve is equipped with a potentiometer of either 500Ω or 1000Ω.

• Type A (Intelligent Adjustment Type)Adjustable function; accepts input signals of 4-20mADC or 1-5VDC, and outputs a 4-20mADC signal. Structurally equipped with a servo controller and a 1KΩ potentiometer.

• H-type (with potentiometer and center position switch)The valve's opening angle is controlled through a switch circuit, which not only outputs a resistance signal corresponding to the opening position but also provides a set of passive position signals. The structure includes a potentiometer and a center position switch.

• Z-Type (DC Control Circuit)The valve operates by reversing the polarity of the DC power supply through an external circuit, thereby controlling its opening and closing, and outputs a set of passive contacts (indicating full open and full closed states). The structure includes a center-position switch.

• J-Type (AC380V Control Circuit)With an external phase-reversal circuit, the motor can be operated in both forward and reverse, enabling the opening and closing of the valve. Simultaneously, it outputs a set of passive contacts (fully open, fully closed) signals. The structure includes a center-position switch.

  
  

  
  

  
  

  
  

【Notable Features】

• Sealed mating materials are made of stainless steel paired with nitrile oil-resistant rubber, offering high durability and extended service life.

• The installation position of rubber sealing rings is flexible, allowing them to be mounted on the valve body or on the butterfly plate. They can provide diverse options for users based on the characteristics of different media.

• The butterfly plate is designed with a framework structure, offering high strength, a large flow area for the medium, and low fluid resistance.

• Fully baked finish for effective rust prevention. Additionally, it can be adapted to different media simply by replacing the sealing material of the valve seat.

• Utilizes a double eccentric structure with a sealing feature that tightens further with increased pressure, offering excellent sealing performance.

• Features bidirectional sealing function; installation is not restricted by medium flow direction or space position; can be installed in any direction.

• The overall structural design is rational, with flexible, effortless, and convenient operation.