Wax Thermostatic Element LG015X

• Precise low-temperature activation – Designed to actuate between 1.6°C and 4°C with a stroke of 3.5 ± 0.35mm, making it ideal for freeze protection valves and cold-threshold control applications
• Minimal movement above threshold – Stroke of ≤0.5mm between 4°C and 25°C ensures the element remains effectively closed once the freeze risk temperature has passed, preventing unintended actuation during normal operating conditions
• Patented wax formula – Proprietary Legom formulation delivers superior sensitivity and temperature-response accuracy versus standard wax elements
• ACS and WRAS certified – Passed European experimental institution product certification, confirming suitability for potable water and HVAC applications in international markets
• Rated for 100,000 cycles – Exceptional service life verified through rigorous lifecycle testing, ensuring reliable long-term performance
• High testing load – Testing load of 90N and maximum load of 140N provide strong actuation force suitable for spring-loaded valve assemblies requiring firm piston engagement at low temperatures
• Copper construction – Corrosion-resistant material ensures long-term durability in wet and thermally cycled environments
• OEM and ODM customization available – Temperature range, working stroke, and maximum load can be customized to suit specific product requirements

Temperature vs. Stroke

Stroke values measured during heating-up cycle. Cooling-down cycle may exhibit slight hysteresis typical of wax thermostatic elements.

• Anti-freeze valve assemblies – Used as the thermostatic actuator inside freeze protection valves for heat pump systems, underfloor heating, and outdoor piping exposed to sub-4°C temperatures
• Cold-threshold drain valves – Integrated into automatic drain mechanisms that activate only when water temperature approaches freezing, protecting pipes and system components from frost damage
• HVAC and air conditioning systems – Applied in refrigerant or chilled water circuit protection assemblies where low-temperature actuation triggers a protective response
• Plumbing freeze protection devices – Installed in thermostatic elements for self-acting frost protection valves in residential and commercial water supply systems
• Automotive cooling systems – Used in thermostatic assemblies requiring precise actuation at low coolant temperatures during cold-start conditions
• Shipping, military, and other industries – Suitable for demanding environments where self-acting low-temperature protection is required without electrical dependency

• The LG015X must be installed in direct contact with the fluid whose temperature it is intended to sense, ensuring accurate thermostatic response at the 1.6°C to 4°C activation threshold
• Ensure the element is fully immersed in the flow path within the host valve or assembly to prevent slow or inaccurate actuation caused by partial exposure to the medium
• Do not expose the element to temperatures exceeding 90°C, as sustained exposure above the maximum rated temperature may permanently degrade the wax charge
• Avoid applying forces exceeding the maximum load of 140N to the piston during assembly or operation
• The host valve or actuator assembly must provide adequate spring-back force to reset the piston on warming, as the wax element generates push force only during the cooling-to-heating transition
• Keep the element away from external heat sources not part of the intended sensing medium, as stray heat can prevent the element from reaching its activation threshold in freezing conditions
• For OEM integration, confirm three key parameters in writing before finalizing the order: temperature range, working stroke, and maximum load

Legom supports full OEM and ODM services for the LG015X Wax Thermostatic Element. Our engineering team can customize the activation temperature range, working stroke, and maximum load to match your product requirements. Before any commitment, written confirmation of three key performance parameters is required: temperature range, working stroke, and maximum load. All customization projects are handled with strict confidentiality. Contact us via WhatsApp or info@legomsmart.com.