Wax Thermostatic Element LG068X

• Highest stroke output in the Legom light-duty range – Delivers greater piston travel than the LG071X, LG0874, and LG0874A across every temperature band while maintaining the same 90N/1N/mm mechanical platform
• High initial actuation band – Stroke of 1.8mm between 15°C and 38°C is 50% higher than the LG071X (1.2mm), providing more valve opening in the lower ambient temperature range
• Strong cumulative stroke above 38°C – 2.4mm cumulative stroke from 38°C to 60°C and 1.6mm in the 38°C~46°C band confirm the element continues to deliver substantial travel in the upper portion of the active range
• Deceleration zone at 35°C~38°C – Reduced stroke of 0.6mm in this narrow 3°C band creates a deliberate pause between the lower and upper actuation bands, shared with the LG071X profile structure
• 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
• 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 requiring higher travel – The LG068X is suited for compact TMV assemblies on the light-duty platform where more valve opening is needed across the full 15°C to 60°C range than the LG071X can deliver
• Compact plumbing and sanitary devices – Applied in small-format thermostatic valves where spring force constraints limit the element to 90N maximum, but the valve mechanism requires greater piston travel than other light-duty models provide
• Automotive cooling system thermostats – Used in engine cooling thermostats with lighter valve designs where more complete valve opening across the warm-up range is a design requirement
• HVAC and air conditioning systems – Applied in low-resistance thermostatic control assemblies where maximum stroke output within the light-duty load constraint is the primary selection criterion
• Sanitary and medical equipment – Integrated into precision thermostatic assemblies requiring low-force, high-travel staged temperature control with a defined pause at 35°C~38°C
• Shipping, military, and other industries – Suitable for specialized applications requiring self-acting, maximum-stroke light-duty thermostatic control without electrical dependency

• The LG068X 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 will reduce the effective stroke output, particularly in the lower 15°C~35°C band
• 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 LG068X 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 LG068X 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.