Wax Thermostatic Element LG0766A

• High primary stroke at 38°C~53°C – Delivers 2.7 ± 0.15mm in the first actuation band, the strongest stroke output in this temperature range among comparable Legom models, ensuring decisive valve opening from the activation threshold
• Clean two-band profile starting at 38°C – Activates precisely at 38°C without any lower-temperature pre-actuation, making it the correct choice for assemblies that must remain fully retracted below 38°C
• Secondary stroke above 53°C – Additional 1.25mm of travel between 53°C and 60°C provides continued proportional response as temperature rises beyond the primary band
• Total stroke ceiling of ≤5.2mm – Clearly defined maximum stroke across the full 38°C to 90°C operating span allows valve designers to size the mechanism with a known upper travel limit
• 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.

• Thermostatic mixing valves (TMV) – The clean 38°C activation threshold and strong primary stroke make the LG0766A suited for TMV assemblies that must remain fully retracted below 38°C and open decisively as hot water enters the mixing chamber
• Anti-scald and hot water safety devices – Applied in plumbing fixtures and safety valves where the element must respond forcefully once temperature crosses the 38°C threshold, with continued proportional response up to 60°C
• HVAC and air conditioning systems – Used in thermostatic control assemblies where actuation must begin at a defined mid-range temperature without any pre-activation at ambient conditions
• Automotive engine cooling systems – Applied in engine thermostats requiring strong, precise actuation beginning at a defined temperature threshold during the warm-up phase
• Sanitary and medical equipment – Integrated into thermostatic valve assemblies in hospital and laboratory fixtures where the element must activate decisively at body-adjacent temperatures
• Shipping, military, and other industries – Suitable for demanding environments requiring self-acting, high-stroke thermostatic control beginning at a precisely defined temperature without electrical dependency

• The LG0766A must be installed in direct contact with the fluid whose temperature it is intended to sense, ensuring accurate response at the 38°C activation threshold
• Ensure the element is fully immersed in the flow path within the host valve or assembly. Partial immersion can delay or reduce actuation at the intended threshold temperature
• Do not expose the element to temperatures exceeding 90°C, as sustained exposure above the maximum rated temperature may permanently degrade the wax charge and reduce stroke accuracy
• 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 cooling, as the wax element generates push force only during heating
• Keep the element away from external heat sources not part of the intended sensing medium. Pre-activation below 38°C due to stray heat will compromise the clean threshold behavior this element is designed for
• 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 LG0766A 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.