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ZT Self-operated Electric Temperature Control Valve

ZT Self-operated Electric Temperature Control Valve

  • Model:ZT-16C/ZT-25C/ZT-40C/ZT-64C/ZT-16P/ZT-25P/ZT-40P/ZT-64P/ZT-16R/ZT-25R/ZT-40R/ZT-64R
  • Specification:DN20~200
  • Temperature:-20~250℃
  • Medium:Steam, hot water, thermal oil, etc.
  • Pressure:PN1.0~6.4MPa
  • Connection method:Flanged
  • Driving method:Self-operated
  • Material: Cast Steel,Stainless Steel,Duplex Stainless Steel
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ZT Self-operated Electric Temperature Control ValveOverview

The ZT  self-operated electronically controlled temperature regulating valve is an automated fluid control unit integrating a high-precision Pt100 temperature sensor, an intelligent electronic controller, and an electric actuator. The valve eliminates the need for external DCS or PLC systems; it monitors the controlled medium's temperature via its own sensor and feeds data to the microprocessor inside the intelligent actuator. The actuator performs PID calculations based on the preset temperature and drives the valve stem for linear displacement, accurately regulating the flow of heating media (steam, hot water) or cooling media. Available in heating (closes on temperature rise) and cooling (opens on temperature rise) types, this series is widely used in heat exchange stations, domestic hot water systems, food processing, pharmaceuticals, and various heat exchangers in chemical processes.

Product Image of ZT Self-operated Electric Temperature Control Valve

ZT Self-operated Electric Temperature Control ValveCharacteristic

1.Highly integrated intelligent control:Combines sensor, controller, and actuator in one unit, simplifying system integration and eliminating the need for separate control cabinets, which significantly reduces costs and installation space.
2.High-precision PID regulation:Through electronic continuous sampling and intelligent algorithms, it achieves microsecond-level response and precise compensation, with temperature control accuracy up to ±1℃, effectively overcoming the lag of traditional mechanical valves.
3.Flexible control logic switching:Equipped with both heating and cooling modes. Users can easily set target temperatures and action directions via the actuator panel to meet various requirements such as heating, air conditioning, or equipment cooling.
4.Durable valve body construction:Body materials available in cast steel or stainless steel, with internals made of hardened stainless steel. It offers excellent resistance to erosion and high temperatures for long-term stable operation in harsh thermal cycles.
5.Pressure-balanced structure:The valve plug typically adopts a pressure-balanced design to offset unbalanced forces from the media pressure differential. This allows smaller actuators to handle high-pressure fluids, ensuring a smooth regulation process.
6.Real-time monitoring and diagnosis:The actuator features an LED or LCD screen to display current temperature, set point, and valve position. It includes protection against sensor disconnection, motor stall alarms, and power-off memory for parameters.
7.Intrinsic safety and electrical protection:The actuator has a high protection rating and built-in thermal protection switches and electrical limits. In case of abnormal temperature rise, it can execute a safety reset based on presets.
8.Ease of maintenance and long life:Compact design with few moving parts leads to minimal mechanical wear. The top-entry design allows for internal maintenance without removing the valve from the line, lowering O&M costs.

ZT Self-operated Electric Temperature Control Valvestructure principle

Structural Drawing of ZT Self-operated Electric Temperature Control Valve

List of Component Names and Materials

ComponentMaterial
Body, BonnetHT200, ZG230-450, ZG1Cr18Ni9Ti
Plug (Core)ZG1Cr18Ni9Ti, Stellite alloy hardfacing reinforced PTFE
PackingPTFE (Teflon), Flexible graphite
Stem, Bushing2Cr13
GasketRubber asbestos sheet, 10# steel, 1Cr18Ni9Ti asbestos spiral wound gasket
Bellows1Cr18Ni9Ti


ZT Self-operated Electric Temperature Control Valvetechnology parameter

Performance Specification Sheet

Performance Specification Sheet
Nominal Pressure1.62.54.06.4MPa
Strength test pressure2.43.86.09.6
Sealing test pressure1.762.84.47.04
Applicable Temperature-20~250℃

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard


ZT Self-operated Electric Temperature Control Valvestandard size

Outline dimension table(Unit:mm)

Nominal Diameter DN20253240506580100125150200
D155155162162162170170170170170170
H 4290290325325325380380380380380380
L150160180200230290310350400480600
H 5175180215218230280285315400460540
H 6535870758292100110125142170
Weight (PN 16 40)10121517183446547679100
Weight (PN 64)1316192627436985120125150


Due to the rapid R&D iteration speed of valve products from China Kaivex Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!