Self-operated Temperature Control Valve

Self-operated temperature control valve is designed for heating and cooling applications where automatic temperature regulation is required without an external power supply or air source. The valve operates through a self-contained control system made up of a temperature bulb, capillary tube, and actuator, allowing it to respond directly to temperature changes in the controlled medium. For steam, hot water, heat transfer oil, and certain non-corrosive gas applications, Self-operated temperature control valve automatically adjusts valve opening according to the preset temperature, helping keep the controlled process within a stable temperature range.

In practical operation, Self-operated temperature control valve is valued for its ability to maintain stable temperature under continuous working conditions rather than simply performing on-off action. In heating applications, the valve opens when the controlled temperature drops below the set point, increasing the flow of steam, thermal oil, or other heating media. In cooling applications, the valve opens when the temperature rises above the set point, increasing the flow of cooling water or other cooling media. This makes Self-operated temperature control valve suitable for heat exchangers, tank jackets, reactors, hot water systems, and other temperature control loops that require simple structure, sensitive action, and low maintenance demand.

Size: DN15~DN150

Pressure: PN1.6, PN4.0

End connection: RF,RTJ

Material: WCB, WC6, LCB, CF8, CF8M, CF3M, LCB,904L, 316Ti, A105, F304,F316, Duplex stainless steel, Monel, Hastelloy, (Special Materials on Request)

Self-operated temperature control valve is mainly used in heating, cooling, and constant temperature control systems. Typical applications include heat exchangers, tank jackets, reactors, steam heating systems, hot water temperature control loops, cooling water systems, and selected liquid or gas process temperature control lines. For systems that need to maintain process temperature continuously within a defined range, this type of valve provides automatic adjustment without adding extra electric or pneumatic control units.
Depending on whether a heating type or cooling type structure is selected, Self-operated temperature control valve can be used for automatic compensation of heating media or cooling media. Whether used for steam, hot water, or heat transfer oil in heating service, or for cooling water and similar media in cooling service, this valve is especially suitable for applications that are sensitive to temperature fluctuation, require long-term stable operation, and prefer mechanical automatic regulation on site.

Founded in 2009, Huizheng owns a 50-mu standardized industrial plant and is an automatic control valve manufacturer integrating R&D, design, manufacturing, and sales. Its product range covers pneumatic control valves, electric control valves, self-operated control valves, ball valves, eccentric rotary valves, sliding gate valves, butterfly valves, gate valves, globe valves, and other series. These products have been widely used in power generation, metallurgy, petroleum, chemical processing, pharmaceuticals, new energy, and water treatment projects. The production facility is equipped with CNC machines, intelligent machining centers, robotic equipment, and testing devices for flaw detection, tensile testing, and spectrographic analysis, and the company has obtained ISO system certification, TS special equipment manufacturing license, CE, EAC, API, and TUV certifications.

Self-operated temperature control valve can be selected and customized according to temperature setting range, control mode, medium type, capillary length, connection standard, and body material. For project-based requirements, technical parameters can be evaluated and matched accordingly, and calculation sheets and drawing support can be provided after operating conditions are confirmed, ensuring that the temperature bulb, capillary tube, actuator, and valve body structure are suitable for the actual system.

The product supports drawing-based customization, customer design cooperation, and sample testing, making it suitable for standard model selection, non-standard operating condition matching, and batch project supply. It can also be configured according to different installation conditions and process requirements, allowing the final structure to fit the actual application more accurately.

Huizheng operates under a complete ISO9001 quality management system and applies standardized control throughout manufacturing, pressure testing, packing, and shipment. During order execution, pressure test videos, packing photos, packing lists, and customs declaration documents can be provided to confirm product condition, packing status, and shipping information, making the delivery process clearer and more traceable. For products such as Self-operated temperature control valve, which involve installation position, bulb arrangement, and temperature control precision, inspection during manufacturing and complete delivery documentation are equally important.

For after-sales service, corresponding solutions can be provided according to the actual issue if any abnormal condition is found after delivery. Problems that can be handled remotely will be supported by video guidance, while parts that cannot be repaired on site can be resent according to the actual case. The after-sales team has technical background and can respond more efficiently to installation, commissioning, and operation-related issues, helping ensure more stable and smoother long-term use.

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