Working Principle: When the valve core moves up and down, it changes the flow area of the two channels:
• One channel opens wider, while the other closes smaller.
• The total flow capacity remains relatively stable with minimal flow fluctuations.
• Achieves continuous, proportional regulation, rather than simple on/off switching.
Key Features:
• One valve replaces two straight-through valves + three-way piping, saving space and costs.
• Smooth regulation, suitable for closed-loop temperature control.
• Good flow characteristics, linear/equal percentage selectable.
• Leakage rating is generally Class IV or V.
• Common diameters: DN25～DN300, pressure PN16～PN40.
Applications:
• Heat exchange stations, central air conditioning: hot and cold water temperature balance control.
• Chemical industry: reactor temperature control, media proportioning.
• Boilers, waste heat systems: bypass desuperheating, flow distribution.
• Oil and water treatment systems: flow switching and proportional regulation.
