Wax Thermostatic Element LG0766

• Highest primary stroke in the LG0766 series – Delivers 3 ± 0.15mm between 38°C and 53°C, compared to 2.7mm for the LG0766A, providing more decisive valve opening in the critical lower portion of the activation range
• Clean 38°C activation threshold – No lower-temperature pre-actuation band, ensuring the element remains fully retracted at ambient temperatures and activates only when the fluid reaches 38°C
• Controlled taper above 53°C – Secondary stroke of 0.75mm between 53°C and 60°C provides a deliberate reduction in piston travel rate above 53°C, allowing the valve to approach its upper position more gradually
• 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 high primary stroke of 3mm and clean 38°C threshold make the LG0766 suited for TMV assemblies requiring the valve to open fully and decisively within the 38°C to 53°C range, with reduced travel above 53°C
• Anti-scald and hot water safety devices – Applied in plumbing fixtures where the element must open the valve to near-full travel by 53°C, then slow down as temperature approaches the upper safe delivery limit
• HVAC and air conditioning systems – Used in thermostatic control assemblies where the primary actuation must be concentrated in the lower portion of the temperature range and taper above 53°C
• Automotive engine cooling systems – Applied in engine thermostats requiring maximum piston travel during the initial warm-up phase, with reduced additional travel as the engine approaches normal operating temperature
• Sanitary and medical equipment – Integrated into thermostatic valve assemblies where the largest proportion of valve opening must occur in the 38°C to 53°C body-adjacent temperature zone
• Shipping, military, and other industries – Suitable for demanding environments requiring self-acting, high-primary-stroke thermostatic control beginning at a precisely defined temperature without electrical dependency

• The LG0766 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 LG0766 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.