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Vacuum Tube

Rs 900
Rs 1,200.00
Tax included.
Vendor: HomeSolar

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Solar collectors use special glass tubes called evacuated tubes, essential for their functioning. Each tube comprises two layers – an outer one made of robust borosilicate glass, resistant to hail impact, and an inner one coated with a selective layer for optimal solar heat absorption. A vacuum is created between these layers, eliminating heat loss. To sustain the vacuum, a barium getter is employed, which absorbs gases emitted during storage and operation. 


The barium layer turns white if the vacuum is lost, serving as a visual indicator. These tubes ensure efficient solar energy absorption and are crucial components of solar collectors.

Unlike other solar collectors, evacuated tube solar collectors maintain efficiency even on cloudy days by absorbing energy from infrared rays that penetrate clouds. They are less affected by wind and low temperatures than flat plate collectors due to the insulating vacuum. Aligned in parallel, the tubes can passively track the sun's heat all day in a North-South orientation or track the sun all year in an East-West orientation. The round shape minimizes reflection, ensuring constant radiation exposure throughout the day. Unlike flat collectors, the round shape allows for optimal radiation absorption, maximizing efficiency from mid-morning to mid-afternoon, regardless of the sun's angle.

Model type Glass Evacuated Tube

Length 1800 mm

Outer tube diameter Ø58mm

Inner tube diameter Ø47mm

Glass thickness 1.6mm

Glass Material Borosilicate Glass 3.3

Absorptive Coating AIN/AIN-SS/Cu.

Absorption coefficient >92%

Emission coefficient <8%

Vacuum P<5x10-2 Pa

Stagnation Temperature >300℃

Net weight ≧ 2.0kg

✔️ 12 Months Warranty on Vacuum Tubes
*Warranty not covered if tube is broken

Customer Reviews

Based on 1 review
Top Quality

Very good performance and high temperature



Barcode: -
Product Type: Solar Water Heater Parts
Vendor: HomeSolar

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Solar Repairs

In the aftermath of Cyclone Belal, we understand that many of our valued customers have faced the unfortunate scenario of damaged solar water heaters. We empathize with the challenges posed by severe weather conditions, particularly the impact on the delicate vacuum tubes integral to the functioning of solar water heaters. At Sofo Soler Moris Ltd, we want to assure our clients that we stand ready to support you in these times of distress.

Our seasoned team of technicians is well-equipped and prepared to address the specific damages incurred during the cyclone. Most commonly, we have observed breakages in the vacuum tubes, which are a critical component of the solar water heater system. These tubes play a pivotal role in harnessing the sun's energy efficiently. In the event of breakage or damage, our expert technicians specialize in swift and effective repair and replacement procedures.

Here's how we can assist you:

1. Rapid Assessment:
Our responsive team will conduct a thorough assessment of the damage to your solar water heater. We understand the urgency of restoring your system to normalcy, and our technicians will expedite the evaluation process.

2. Vacuum Tube Replacement:
Should the assessment reveal damage to the vacuum tubes, our team will promptly replace them with high-quality, durable tubes. We source components from trusted suppliers, ensuring the longevity and efficiency of your solar water heater.

3. Comprehensive Servicing:
Beyond mere repairs, we offer comprehensive servicing to ensure that your entire solar water heater system is functioning optimally. This includes checks on connections, valves, and overall system integrity.

4. Preventive Measures:
In addition to repairs, our team will provide insights into preventive measures to fortify your solar water heater against future weather-related challenges. We believe in proactive maintenance to enhance the resilience of your system.

At Sofo Soler Moris Ltd, our commitment goes beyond merely providing products; we are dedicated to the enduring performance and satisfaction of our clients. If you have experienced damage to your solar water heater due to Cyclone Belal, please reach out to us promptly. We are here to restore not just your system but also your peace of mind.