Electronic single-seat control valves

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 single-seat control valves

Model: ZDLP

Subtitle：Electronic Flow Control Valve

The Electronic Single Seat Control Valve is a precision flow control device designed for applications requiring precise regulation of pressure, temperature or flow in liquid, gas and steam systems. It utilizes a single-seated shut-off valve design and electronic actuator that combines powerful shut-off capability with advanced digital control, and is ideal for chemical processing, HVAC air...

Tags:pressure regulating valve, Flow Control Valve, Temperature regulating valves

Classification:Motorized Control Valve

Working conditions:metallurgical plant, drugs manufacturing factory, chemical plant, power plants

Product Overview

The Electronic Single Seat Control Valve is a precision flow control device designed for applications requiring precise regulation of pressure, temperature or flow in liquid, gas and steam systems. It utilizes a single-seated shutoff valve design and electronic actuator that combines powerful shutoff capability with advanced digital control, making it ideal for chemical processing, HVAC and industrial automation.

working condition

Process industry: precise control of aggressive chemicals, solvents and process fluids.

HVAC systems: temperature and pressure regulation in heating/cooling circuits.

Water treatment: flow control for metering systems and filtration units.

Energy systems: Steam flow management in power plants and boiler systems.

Main features

Electronic actuator:

Control signal: 4-20mA, 0-10V or digital protocol (HART, Modbus, Profibus).
Positioning accuracy: ±0.25%, using adaptive PID algorithm.
Power supply: 24VDC, 110VAC or 220VAC optional.

Single-seat design:

Leakage class: ANSI Class IV (FCI 70-2) or Class VI (zero leakage).
Spool and seat: Hardened stainless steel (17-4PH/316L), wear-resistant.

Flow characteristics:

Linear or equal percentage valve internals options to optimize process control.
Cv values range from 0.01 to 450 for low or high flow rates.

Durable construction:

Body material: carbon steel (WCB), 316L stainless steel, or alloy steel (WC6).
Seals: Graphite, PTFE or Kalrez® (for high temperature/corrosive media).

Security and Compliance:

Explosion-proof: ATEX/IECEx approvals available (Zone 1/2).
Standards: IEC 60534, ANSI B16.34, ISO 5208.

Product Advantages

High accuracy: Intelligent actuator equipped with self-regulating PID ensures ±0.25% control accuracy.

Zero leakage: metal-to-metal or soft seal options for critical shutoffs.

Adaptable: Modular valve internals are designed to be customized to specific flow profiles.

Low Maintenance: Self-diagnostic actuators issue calibration or wear alarms.

Comparison with other control valves

specificities	Electronic Single Seat Valves	Pneumatic control valves
control accuracy	±0.25% (smart actuator)	±2-5% (depending on gas source stability)
energy conservation	No compressed air required	Need for continuous gas supply
response time	Adjustable (2-10 seconds)	Faster (<1 second), but less accurate
appliance	Precision processes, remote automation	High-speed industrial systems

Medium of use

petroleum, Water/hot water, oils, vapor

working condition

metallurgical plant, drugs manufacturing factory, chemical plant, power plants, waterwork, cement factory

summarize

The Electronic Single Seat Control Valve is a versatile and reliable solution for precise flow control in demanding industrial environments. It combines high shutoff capacity, intelligent actuation and durable construction, making it ideal for chemical, energy and HVAC systems that demand precision and safety. Whether regulating corrosive chemicals or high-pressure steam, the valve provides consistent performance and long-term reliability.

Product Parameters

Nominal diameter	DN15 to DN200 (½" to 8")
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)	0.01 to 450
Valve body type	Shut-off valve type (single-seated)
actuators	Rotary or linear electronic actuators with position feedback
control signal	4-20mA, 0-10V, Modbus RTU, HART
leakage rate	ANSI Class IV or VI
response time	2-10 seconds (adjustable by PID parameters)
protection class	IP67/IP68 (dustproof/waterproof)