Wax Thermostatic Element LG034X
The LG034X Wax Thermostatic Element is a high-precision, self-acting thermostatic element featuring a proprietary patented wax formula. Widely recognized in the industry for its sensitivity and accuracy, the LG034X is used across a broad range of applications including HVAC systems, plumbing, automotive, sanitary, and military equipment. It has passed European product certification by accredited institutions, including ACS and WRAS.
With a lifespan rated at 100,000 cycles and a maximum load capacity of 140N, the LG034X delivers reliable thermostatic actuation across decades of operation. The element is constructed from copper and engineered to respond precisely to temperature changes in the 1°C to 25°C range.
Key Benefits
- 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 quality and compliance for international projects
- Rated for 100,000 cycles – Exceptional service life with dimensional stability verified at both 30,000 and 100,000 cycle milestones
- Wide application range – Suitable for plumbing, HVAC, air conditioning, automotive, shipping, sanitary, military, and other industries
- High load capacity – Maximum load of 140N with testing load at 55N and minimum load at 45N
- Copper construction – Corrosion-resistant material ensures long-term durability in wet and thermal cycling environments
- OEM and ODM customization available – Temperature range, working stroke, and maximum load can be customized for specific product requirements
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | LG034X |
| Material | Copper |
| Maximum Load | 140N |
| Minimum Load | 45N |
| Testing Load | 55N |
| Spring Rate | 5N/mm |
| Maximum Temperature | 90°C |
| Stroke | L = 26 ± 0.5mm at 25°C, 55N |
| Lifespan | 100,000 cycles |
| Certification | ACS, WRAS |
Temperature vs. Stroke
| Temperature (°C) | Stroke (mm) |
|---|---|
| 1°C ~ 4°C | 4.5 ± 0.45 |
| 4°C ~ 25°C | ≤ 6 |
Stroke values measured during heating-up cycle. Cooling-down cycle may exhibit slight hysteresis typical of wax thermostatic elements.
Lifecycle Performance
- After 30,000 cycles of life testing, length shall be no less than 25.5mm
- After 100,000 cycles of life testing, length shall be no less than 25.2mm
Application & Use Cases
- HVAC and underfloor heating systems – Used as the thermostatic actuator within mixing valves, zone valves, and temperature control assemblies
- Plumbing systems – Installed in thermostatic mixing valves and anti-scald devices to regulate hot water delivery temperature
- Air conditioning systems – Provides temperature-responsive actuation for refrigerant and coolant circuit control
- Automotive applications – Used in engine cooling thermostats and climate control systems requiring reliable wax-actuated response
- Sanitary and medical equipment – Precision temperature control in shower systems, hospital fixtures, and hygiene-sensitive installations
- Shipping and marine systems – Suitable for temperature management in engine cooling and fluid systems aboard vessels
- Military and defense equipment – Used where temperature-responsive mechanical actuation is required under demanding operating conditions
Installation Notes
- The wax thermostatic element must be installed in direct contact with the medium (water or fluid) whose temperature it is intended to sense and respond to
- Ensure the element is fully immersed in the flow path to allow accurate temperature measurement and consistent actuation
- Do not expose the element to temperatures exceeding 90°C, as this may permanently degrade the wax charge and reduce stroke accuracy
- Avoid applying forces exceeding the maximum load of 140N to the piston during installation or operation
- When selecting for a specific application, confirm three parameters in writing before ordering: temperature range, working stroke, and maximum load
- The element is designed for use in assemblies where spring return force resets the piston on cooling – ensure the host valve or actuator provides adequate spring-back
- Keep the element away from external heat sources that could interfere with accurate temperature sensing
- For OEM integration, consult with the Legom engineering team before finalizing mechanical tolerances and housing dimensions
Frequently Asked Questions
What is a wax thermostatic element and how does it work?
A wax thermostatic element uses a sealed chamber of thermally responsive wax that expands when heated and contracts when cooled. This expansion pushes a piston outward, generating mechanical force and stroke that can actuate valves or other mechanisms. The LG034X uses Legom’s patented wax formula to achieve precise, repeatable actuation between 1°C and 25°C.
What certifications does the LG034X hold?
The LG034X has passed European experimental institution product certification under ACS and WRAS standards, confirming its suitability for use in drinking water systems and broader HVAC applications.
What is the expected lifespan of the LG034X?
The LG034X is rated for 100,000 actuation cycles. Independent life testing confirms that after 30,000 cycles the element length is no less than 25.5mm, and after 100,000 cycles no less than 25.2mm, ensuring dimensional stability throughout its service life.
Which industries use the LG034X?
The LG034X is used across plumbing, HVAC, air conditioning, automotive, sanitary, shipping, military, and other industries where reliable, self-acting temperature-responsive mechanical actuation is required.
Can the LG034X be customized for different temperature ranges or stroke requirements?
Yes. Legom offers full OEM and ODM customization. If your application requires a different temperature range, working stroke, or maximum load specification, the engineering team can develop a customized solution. Written confirmation of the three key parameters – temperature range, working stroke, and maximum load – is required before any customization project begins.
How do I select the correct wax thermostatic element for my product?
If you are unsure which parameters apply to your application, the Legom team can assist with selection or develop a custom element based on your product requirements. Contact us via WhatsApp or email to start the conversation.
OEM & ODM Customization
Legom supports full OEM and ODM services for the LG034X Wax Thermostatic Element. Our engineering team can customize the temperature response range, working stroke, and maximum load to suit your specific 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.
Datasheet
Product information last reviewed by the Legom Technical Team. For the most current specifications, refer to the official datasheet or contact our sales team.
Custom OEM & ODM Solutions
Legom is a direct manufacturer offering end-to-end OEM and ODM services. With our in-house engineering and production capabilities, we work closely with distributors and system integrators to deliver fully customized solutions under strict NDA.
