I. Core Structure and Working Principle

1. Unique Design

   • Valve Body Structure: Employing T-shaped or L-shaped flow channels, fluid distribution or convergence into three channels (one inlet and two outlets, or two inlets and one outlet) is achieved through the rotation of a single butterfly valve.

   • Electric Actuator: Typically equipped with an intelligent regulating actuator (such as one supporting 4-20mA signals), enabling precise control of the butterfly valve plate angle (stepless adjustment from 0 to 90 degrees).

   
   

2. Sealing Technology

   • Soft seal: EPDM or PTFE valve seats, suitable for clean water and weakly corrosive media at temperatures ≤150°C.

   • Metal hard seal: Stainless steel + Stellite alloy coating, resistant to high temperatures (≤600°C) and high pressure differentials (PN64).

   
   

二、Typical Application Scenarios

1. HVAC System

   • Dynamically balances hot and cold water branch flow rates, replacing traditional three-way ball valves (40% reduction in flow resistance).

   
   

2. Chemical Process Control

   • Corrosive medium diversion (requires fluorinated valve body lining), such as acid-base liquid ratio adjustment.

   
   

3. Water Treatment Engineering

   • Wastewater treatment plant inlet and outlet switching, supporting remote automated control.

   
   

三、Key Selection Parameters

四、Technology Trends and Innovation

1. Smart Upgrade

   • Built-in flow sensor provides real-time data feedback to the PLC system (such as Siemens S7-1200).

   
   

2. Energy-saving design

   • Low-torque actuator (power consumption < 50W), suitable for remote areas powered by solar energy.

   
   

五、Maintenance and Troubleshooting

• Frequently Asked Questions: Internal leakage (replace valve seat), actuator overload (check power supply voltage).

• Maintenance Cycle: Lubricate the valve stem every 12 months and replace the seals every 3 years (shorter intervals required for harsh chemical environments).

Model Selection Recommendations