High density PU Foam Solar Water Heater with Double Tank

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Product Overview


solar water heater with double tank

Product Description

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System Description     

VISION VDS series solar water heater incorporates a number of all-glass vacuum tubes, an atmospheric water tank with high pressure double tank inside, the supporting bracket and accessories.

The vacuum tube for VISION VDS solar water heater could be single-target tubes, three-target tubes, and super heat tubes.


Main Features             

1. The most economical solar water heating system          2. Adaptable with most kinds of vacuum tubes

3. Pressure hot water supply from double tank                  4. Compatible with electric or gas heating devices

5. Auto working with a controller or feeder tank               6. Working all year round even in frozen winter


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System Specification     


    Vacuum Tube

  Tube type

  Single-target/ Three-target/ Super heat tube

  Glass tube

  Double-layer borosilicate 3.3 glass


  Three-target selective coating Cu/SS-AIN

      Water Tank

   Inner tank

  Food-grade stainless steel SUS304/ SUS316

  Heat exchanger

  Food-grade stainless steel SUS304 1.2MM


  High-density PU foam preserves heat 80 hours

 Tank shell

  Hot-dip galvanized steel painted


 Shaped strong galvanized steel adaptable to flat and slope roof


 Anti-aging silicon seals, dust-proof seals, air-vent cap, stainless screws

 Auxiliary Devices  

 Solar controller, assistant tank, electrical heater, magnesium anode

Tilt Angle

 25°; 38°; 45°

Hail Resistance

 25 MM

Hot Water Pressure

 6.0 Bar


Vacuum Tube



Container Loading Qty

Tube Qty

Tube Size




10 Pcs

Φ58*1800 MM

100 L

70 Sets

170 Sets


12 Pcs

Φ58*1800 MM

120 L

62 Sets

151 Sets


15 Pcs

Φ58*1800 MM

150 L

54 Sets

131 Sets


18 Pcs

Φ58*1800 MM

180 L

43 Sets

105 Sets


20 Pcs

Φ58*1800 MM

200 L

40 Sets

97 Sets


25 Pcs

Φ58*1800 MM

250 L

33 Sets

80 Sets


30 Pcs

Φ58*1800 MM

300 L

28 Sets

68 Sets



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Packaging & Shipping

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Company Information


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  Frequently Asked Questions

Q: How to use in cloudy or rainy days?

A: We could connect electric heater, gas heater or other boilers for bakup heating;

Q: Freezing problem in solar water heater?
A: Never, when snow more than 5 days electric heating will start to protect system;

Q: Lead time for production?

A: Within 7 days for full container orders;
Q: Minimum order quantity?
A: 1 set for each model of VISION solar water heaters and solar collectors;

Q: Payment term and methods?

A: 30% deposit & 70% balance at sight of B/L copy. Via T/T transfer, sight L/C, Western Union, MoneyGram, Paypal, etc;

Q: Warranty period?
A: 10 years for VISION solar water heaters and solar collectors upon bill of lading date;
Q: Accept Alibaba trade assurance order?
A: Yes, in this way Alibaba will guarantee your payment, product quality and delivery;
Q: Accept OEM production?
A: Yes, offer to make customized logo on solar products and packing cartons.
Q: Working as a VISION dealer?
A: We welcome abroad customers to work with us as a VISION dealer for agreed countries and areas.


Our Services


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