Wax Thermostatic Element LGX7388

• Electrically-commanded actuation – Unlike passive temperature-sensing wax elements, the LGX7388 activates on applied voltage, enabling integration into automated control systems, timers, thermostats, and building management platforms without relying on fluid temperature as the trigger
• Four voltage variants in one product family – Available as LGX7385 (12V), LGX7386 (24V), LGX7387 (110V), and LGX7388 (220V), covering DC low-voltage systems through standard AC mains voltage in a single consistent form factor
• Fast response time – Start response time under 2 minutes and full stroke completion under 6 minutes, comparable to conventional wax thermal actuators and suitable for zone control and on/off valve applications
• High force output of 140N maximum – Provides sufficient actuation force to operate standard manifold and zone valves typically used in underfloor heating and hydronic HVAC systems
• Verified long-term durability – Stroke length change kept below 8% after 30,000 actuation cycles (approximately 250 days of 6-minute on / 6-minute off cycling), confirming reliable performance over extended service life
• Patented wax formula – Proprietary Legom formulation delivers consistent, repeatable stroke output with each electrical actuation cycle
• ACS and WRAS certified – Passed European experimental institution product certification, confirming suitability for potable water and HVAC applications in international markets
• OEM and ODM customization available – Voltage, stroke, force, and response time can be customized for specific product requirements

All Models and Specifications

• Electrically-controlled zone valves – Used as the actuating element in zone valves for underfloor heating and hydronic HVAC systems where electrical command from a room thermostat or building controller triggers valve opening and closing, replacing conventional wax thermal actuators in applications requiring electrical rather than thermal triggering
• Automated plumbing control systems – Applied in motorized ball valves and mixing valve assemblies for automated domestic hot water recirculation, remote shut-off, and timed irrigation or water management systems
• Building automation and smart home systems – The 24V variant integrates directly with standard building management system (BMS) outputs and smart thermostat controllers that use 24V switching signals for zone control
• Automotive and industrial flow control – Used in electrically-commanded fluid circuit valves for automotive cooling, industrial process lines, and temperature management systems requiring on-demand actuation rather than temperature-triggered response
• Sanitary and medical equipment – Applied in electrically-controlled mixing and diverting valves in hospital, laboratory, and hygiene-sensitive facilities where valve actuation must be commanded by a control system rather than responding passively to fluid temperature
• Military and specialty applications – Suitable for electrically-actuated valve assemblies in demanding environments where reliable, voltage-commanded wax actuation is preferred over solenoid or motor-driven alternatives

• Select the correct voltage variant before ordering — LGX7385 (12V), LGX7386 (24V), LGX7387 (110V), or LGX7388 (220V). Applying the wrong voltage will either prevent actuation or damage the heating element
• Ensure the power supply voltage and polarity are correct before connecting. The heating resistance values are specific to each voltage variant and must match the supply
• The element requires up to 2 minutes to begin stroke and up to 6 minutes to reach full stroke after power is applied. Design the control system timing accordingly and do not assume instantaneous actuation
• After power is removed, the element cools and retracts passively. Ensure the host valve assembly provides adequate spring-back force to reset the piston as the wax cools
• Do not expose the element to ambient temperatures exceeding 60°C, as this reduces the temperature differential available for wax expansion during electrical heating and may degrade stroke output
• Avoid applying forces exceeding the maximum force of 140N to the piston during assembly or operation
• For OEM integration, confirm four key parameters in writing before finalizing the order: working voltage, stroke, response time requirement, and maximum force

Legom supports full OEM and ODM services for the LGX7388 Electrically-Heated Wax Thermostatic Element series. Our engineering team can customize working voltage, stroke, response time, and maximum force to match your product requirements. Before any commitment, written confirmation of key performance parameters is required: temperature range, working stroke, working voltage, and maximum force. All customization projects are handled with strict confidentiality. Contact us via WhatsApp or info@legomsmart.com.