Wax Thermostatic Element LG071X

• Light-duty platform with wide-range coverage – The 90N maximum load and 1N/mm spring rate of the light-duty platform combined with activation starting from 15°C gives designers access to the full ambient-to-high-temperature range in a low-force element
• Deceleration zone at 35°C~38°C – Reduced stroke of 0.7mm in this narrow 3°C band creates a deliberate pause between the lower actuation band (15°C~35°C) and the upper actuation band (38°C~46°C), enabling staged valve behavior at a precisely defined mid-point
• Resuming actuation above 38°C – After the 35°C~38°C deceleration zone, stroke increases again to 1.5mm between 38°C~46°C and 1.9mm cumulatively up to 60°C, confirming the element continues to deliver significant travel above the pause point
• Ultra-soft spring rate of 1N/mm – Enables precise, controlled piston travel in low-resistance valve assemblies where standard 5N/mm elements would cause over-actuation or mechanical damage
• 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 in high-use installations
• 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. Refer to the Temperature VS. Stroke curve in the Datasheet for the full graphical representation.

• Light-duty thermostatic mixing valves – The wide 15°C to 90°C operating range combined with the 90N light-duty load platform makes the LG071X suited for compact TMV assemblies requiring early ambient activation and staged response through the anti-scald temperature range
• Compact plumbing and sanitary devices – Applied in small-format thermostatic valves where both physical and mechanical constraints limit available spring force, but a wide temperature response range is still required
• Automotive cooling system thermostats – Used in thermostats with lighter valve designs requiring controlled, staged actuation from near-ambient cold-start temperatures through normal engine operating range
• HVAC and air conditioning systems – Applied in low-resistance thermostatic control assemblies where the detailed five-stage profile supports proportional valve control from ambient through elevated operating temperatures
• Sanitary and medical equipment – Integrated into precision thermostatic assemblies where low-force, staged temperature control with a defined pause at 35°C~38°C is a design requirement
• Shipping, military, and other industries – Suitable for specialized applications requiring self-acting, light-duty, multi-stage thermostatic control without electrical dependency

• The LG071X must be installed in direct contact with the fluid whose temperature it is intended to sense, ensuring accurate thermostatic response across all five stages of the stroke profile
• Ensure the element is fully immersed in the flow path within the host valve or assembly. Partial immersion is particularly impactful for elements with closely spaced stage boundaries such as the 35°C~38°C deceleration zone
• Do not expose the element to temperatures exceeding 90°C, as sustained exposure above the maximum rated temperature may permanently degrade the wax charge
• The LG071X has a maximum load of only 90N. Do not use this element in valve assemblies with return springs rated above this force
• The spring rate of 1N/mm is significantly softer than standard Legom models. Ensure the host valve return spring stiffness is matched to this spring rate to achieve accurate piston reset on cooling
• Keep the element away from external heat sources not part of the intended sensing medium to avoid premature actuation across any of the five stroke stages
• 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 LG071X 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.