1.high quality with 15 years warranty. 2.offer reasonable price. 3.fast heating. 4.deliver quickly. 5.offer OEM.

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Most efficient vacuum tube---"3-Hi" vacuum tube technology

 “3 Hi” vacuum tubes use 3 systems coating to ensure the most effective heat absorption. This included a AL-N/AI layer but also a separate aluminum and copper layer.  The added layer conduct heat better and also stabilize the coating allowing for a much longer lifespan of 20 year or greater. 

Technical Specifications

Specification	Heat Pipe 58/1800-20R	Heat Pipe 58/1800-30R
Number of tubes	20	30
Frame& manifold	Aluminum	Aluminum
Heating type	Copper Heat Pipe	Copper Heat Pipe
Lenth of Tube	1800mm	1800mm
OD of tube	58 mm	58mm
ID of tube	50 mm	50mm
Glass Thickness	2 mm	2mm
Water Capacity	1l(1/4 gallons)	1.5l (1/3 gallons)
Weight dry	169lbs	211 lbs
Weigh Wet	173 lbs	215lbs
Max BTU/HR	5000/hr	7500 BTU/hr
Pressure	116 psi	116 psi
Glass MaVacuumterial	Borosilicate glass	Borosilicate glass
Vacuum	P<5x10 -3 PA	P<5x10 -3 PA
Frame	Included	Included
Warranty	5  years	5  years

 Test Drive one of our solar systems and you will quickly see the difference a powerful "engine" makes. 

solar vaccum tube collector -30 tube heat pipe solar collector