Solar water heater •  Model: SFA •  Model: SFB •  Model: SFC •  Model: SFD •  Model: SFE •  Model: SFH Solar Air Heating System   • Model: SFG Vacuum tubes • Model: SFVA • Model: SFVB • Model: SFVC Boiler with one coils • Model MВ S1 (80-120 l) • Model ВВ S1 (120-200 l) • Model SB S1 (150-500 l) • Model SB S1 (750-1,000 l) Boiler with two coils • Model ВВ S2 (200 l) • Model SB S2 (200-1,000 l) Special boilers • With a coil and casing type ВВ S1M (80-200L) • Industrial boilers with two coils type SB S2 (1,500-2,000L) • Industrial boilers with one coil type SB S1 (1,500-2,000L) • Industrial boilers type SB EL (1,500-2,000L) • Industrial water containers without a coil type HSE (2,500-10,000L) • Industrial water containers with one U-shaped coil type HSU-1 (2,500-10,000L) HSU-1 (2,500-10,000л) PRODUCTS Solar tubes Model: SFVC SFVC series – Metal-Glass Evacuated Solar Collector Tube with Heat Pipe Description   Payment Terms - cash; - bank transfer; - T/T, L/C Supply Ability 2,500 sets per month Model Number SFVB Brand Name Vacuum tube Minimum Order 1 set Delivery Time 8 weeks Features: 1. High heat effectiveness: higher than all-glass evacuated solar collector tube by 15% 2. Heat pipe conduction: successfully prevents the defects of tube breakage and low power output caused by water fouling and deposits or dust and sand 3. Prevents the tube from being easily broken caused by volume expansion when water freezes in the frigid season 4. Low thermal capacity makes the tube start up quickly 5. Energy output within only 2 minutes of sunshine 6. Insulation temperature can reach 250deg;C, average heat efficiency can still be more than 50%; even under -50 °C 7. High efficient selective absorptive coatings and vacuum heat insulation technology ensure the tube has higher heat output in cloudy weather and in moist areas, especially in winter 8. Solar collecting plate is sealed inside a high quality borosilicate glass tube with 5 x 10 -3 pa of vacuum, to stop corrosion; even in moist conditions Item No. Specification Diameter of solar tube Length of solar tube SFVC7017 Ø70 mm 1.7 M Top
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