Electronic three-way control valve

Electric control valve is a kind of high-precision automatic control valve driven by electric actuator, which is widely used in petroleum, chemical industry, electric power, metallurgy, pharmacy and environmental protection and many other industrial working conditions. The valve is suitable for water, steam, gas, oil and a variety of corrosive media, with excellent corrosion resistance and sealing performance. Electric control valve through the electric actuator to achieve precise adjustment of the spool, can respond sensitively to the control signal, accurate control of flow, pressure and temperature, to meet the needs of complex automation control system. Advantages of the product include compact structure, high regulation accuracy, fast response speed, stable operation, easy maintenance, support for a variety of intelligent control protocols, easy to integrate with DCS and PLC systems. Electric control valve not only improves the automation level and efficiency of industrial production, but also ensures the safety and reliability of the system operation, which is the core equipment in modern industrial process control.

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products

Electronic three-way control valve

Model: ZDLX, ZDLQ

Subtitle：Electronic mixing valve, electronic water distribution valve

The Electronic 3-Way Control Valve is a versatile flow management device for flow mixing (confluence) or diverting (shunt) in liquid, gas and steam systems. The valve integrates an electronic actuator and advanced control algorithms to precisely regulate flow in heating, ventilation and air conditioning (HVAC), chemical processing and industrial energy systems...

Classification:Motorized Control Valve

Working conditions:chemical plant, construction work

Product Overview

The Electronic 3-Way Control Valve is a versatile flow management device for flow mixing (confluence) or diverting (shunt) in liquid, gas and steam systems. The valve incorporates an electronic actuator and advanced control algorithms to precisely regulate temperature, pressure and flow distribution in heating, ventilation and air conditioning (HVAC), chemical processing and industrial energy systems.

Applicable working conditions

HVAC systems: Mixing mode: mixes hot and cold water for precise temperature control of the heating/cooling circuits. Shunt mode: distributes the flow between the primary and secondary circuits in plumbing and heating systems.

Chemical processes: control of reagent mixing ratios in reactors or neutralization processes.

Power Generation: Manages condensate return and feedwater distribution in the steam system.

Industrial processes: Distribute diversions for parallel process lines or cooling towers.

Main features

Tee function:

L-Port (Mix): Combines two inlet flows into a single outlet with a mixing accuracy of ±1%.
T-Port (Split): splits a single inlet flow into two outlets with adjustable proportional control.
Flow: Cv values range from 5 to 1200 to support high traffic applications.

Intelligent electronic actuator:

Control signal: 4-20mA, 0-10V, HART, Modbus or Profibus protocol.
Positioning accuracy: ±0.25%, using self-regulating PID algorithm.
Power options: 24VDC, 110VAC or 220VAC (IP67/IP68 waterproof rating).

Flow Optimization:

Valve insert options: linear, equal-percentage, or custom spool.
Anti-cavitation design: Multi-stage valve internals reduce noise and corrosion in systems with high differential pressure (ΔP) (≤80 bar).

Sturdy and durable:

Valve body materials: carbon steel (WCB), 316L stainless steel, duplex steel (UNS S31803).
Valve internals: Stellite alloy coated spool and seat for greater wear resistance.
Seals: Graphite, PTFE or Kalrez® seals for high temperature/high pressure environments.

Security and Compliance:

Certifications: ATEX, IECEx (Zone 1/2), SIL2/3 (IEC 61508).
Standards: API 598, ANSI B16.34, ISO 5208.

Product Advantages

Precise control: Adaptive PID control ensures flow mixing/splitting accuracy of ±0.25%.

Energy saving: maintains a constant flow rate and reduces pump/compressor loads.

Flexibility: Programmable switching of mixing and shunting modes.

Intelligent diagnostics: real-time monitoring of torque, position and seal status.

Comparison with 2-way control valves

specificities	Three-way control valves	2-way control valves
functionality	Mixing/Shunting	On/off or linear flow control
system efficiency	Reduced piping complexity and energy consumption	Requires auxiliary valve to mix
appliance	HVAC, chemical mixing, parallel systems	Basic Pressure/Flow Adjustment
cost-effectiveness	Higher upfront costs, lower life cycle costs	Lower initial cost

Medium of use

Water/hot water

working condition

chemical plant, construction work

summarize

The electronic 3-way control valve is a versatile, high-precision solution for complex flow management in HVAC, chemical and industrial systems. Its electronic actuation, rugged design and dual-mode functionality enable efficient temperature mixing, flow distribution and process optimization. The valve combines intelligent control with durable construction to ensure reliability, accuracy and energy efficiency in critical applications.

Product Parameters

Nominal diameter	DN25 to DN300 (1" to 12")
Nominal pressure	PN16 to PN100 / Class 150 to 600 (ASME B16.34)
Applicable temperature	-40°C to 450°C (depending on seal material)
Flow coefficient (Cv)	5 to 1200
leakage rate	ANSI Class IV (standard) / Class VI (optional)
Structure type	L-Port (Mix) or T-Port (Split)
actuators	Rotary or linear electronic actuators with torque/speed regulation
response time	2-10 seconds (configurable via software)
communications protocol	HART, Modbus RTU, Profibus PA, Foundation Fieldbus
Connection type	Flange (RF/RTJ), Welding (Socket Weld)