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Heater solar water 2
Solar water tank working principle: The solar water tank is simply like a battery for electricity, except it stores heat energy in the form of hot water. Normally a tank is used to store the heat energy in hot water.Riwatt Solar offers a wide range of solar water tanks for types of applications. These solar water storage tanks are available for hot water storage, hot water heating systems, commercial, and industrial applications.
Riwatt pressurized solar water storage tank provides stable hot water using high-efficiency insulation and rugged stainless-steel construction. Designed for solar hot water heating systems in homes, hotels, hospitals, and commercial buildings. Reliable pressure performance and easy installation.
| MODEL | Inner Tank | Insulation Layer | Outer Tank | Coil Length | Tank Height | ||||||
| Inner Dia.
(mm) |
Thickness
(mm) |
Thickness
(mm) |
Out Dia.
(mm) |
Thickness (mm) | Single Coil (m) | Dual Coil (m) | mm | ||||
| Lower | Upper | ||||||||||
| GTR-100L | 360 | 1.0 | 55 | 470 | 0.5 | 20 | – | – | 1060 | ||
| GTR-150L | 360 | 1.2 | 55 | 470 | 0.5 | 20 | 15 | 10 | 1450 | ||
| GTR-200L | 450 | 1.5 | 50 | 550 | 0.5 | 20 | 15 | 10 | 1340 | ||
| GTR-300L | 480 | 1.5 | 50 | 580 | 0.5 | 25 | 18 | 12 | 1700 | ||
| GTR-400L | 580 | 2.0 | 60 | 700 | 0.5 | 30 | 20 | 15 | 1560 | ||
| GTR-500L | 580 | 2.0 | 60 | 700 | 0.5 | 35 | 25 | 15 | 1890 | ||
| GTR-600L | 580 | 2.0 | 60 | 700 | 0.5 | 35 | 25 | 15 | 2176 | ||
| GTR-700L | 580 | 2.0 | 60 | 700 | 0.5 | 40 | 28 | 17 | 2476 | ||
| GTR-800L | 800 | 2.5 | 100 | 1000 | 0.5 | 45 | 30 | 20 | 1860 | ||
| GTR-1000L | 800 | 2.5 | 100 | 1000 | 0.5 | 50 | 35 | 25 | 2100 | ||
| GTR-1000L WATER TANK SPECIFIATION | |||||||||||
| Insulation Layer | High-Density Polyurethane Foamed | ||||||||||
| Inner Tank Material | Food Grade SUS 304-2B | ||||||||||
| Outer Tank Material | High Quality Color Painted Steel | ||||||||||
| In Tank Heat Exchanger | Stainless Steel or Copper (size: Ȼ:12,16,19,25mm) | ||||||||||
| Drain Port | 1″ Female NPT (Bottom of Tank) | ||||||||||
| T/P Port (Exhaust Port) | 3/4″ female | ||||||||||
| Accessories | Electric Heater Element(1’’, 1.25’’, 1.5’’ or customized)︱ Magnesium Anode(20*230mm)︱T/P Valve(3/4’’)︱Check Valve(3/4’’)︱Tank Feet | ||||||||||
|
Packing Size (mm) |
GTR-100L | 1130×560×560 | GTR-500L | 1980×780×780 | |||||||
| GTR-150L | 1520×560×560 | GTR-600L | 2280×780×780 | ||||||||
| GTR-200L | 1480×640×640 | GTR-700L | 2580×780×780 | ||||||||
| GTR-300L | 1800×680×680 | GTR-800L | 2000×1100×1100 | ||||||||
| GTR-400L | 1700×780×780 | GTR-1000L | 2300×1100×1100 | ||||||||
● Pressurized design for stable water flow
● High-density insulation for long-lasting hot water retention
● Optional 304 / 316L stainless steel inner tank
● Compatible with solar collectors and heat pump systems
● Anti-corrosion and UV-resistant exterior
● Suitable for residential & commercial applications
● Easy maintenance and long service life
1. SS Tanks: All the tanks made in our factory are of SS 304/ 316 material
2.Outer tank: Galvanized steel/PVDF/STAINLESS STEEL.
3.Water tank diameter: can customized
4.Insulation layer: PU foam, 42Kg/m³ high density.
5.Tank capacity: 50L-1000L.
6.Insulation layer thickness: 50mm or 100mm or customized
7.Water tank connection size: 3/4” or 1” or 1.25” or 1.5” or customzed
8.Working pressure: 6 Bar.
9.Water tank optional accessories: electric heating element (backing up heating source) & water level & temperature sensor
10.Heat exchanger(coil) quanity from 1 to 4unit are all available.
11.Auxiliary energy: Electric heater(Optional).
12.Suit for solar water heating system.
13.Bigger size magnesium rod, longer service life.
14.OEM/ODM service available
Solar water tanks are mainly used for centralized domestic hot water supply and commercial hot water systems.
They are available in 9 commonly used capacities — 50L,100L, 150L, 200L, 250L, 300L, 400L, 500L, 600L, 800L, and 1000L,1500L,2000L, 3000L — to meet different hot water demands for homes, hotels, hospitals, schools, and industrial facilities.
For large-scale projects, the solar water tank works as part of a complete system that includes:
● Solar collectors
● Workstations (controller + circulation pump)
● Expansion tank
● Filling valve
● Exhaust valve
● Collector connections
● Piping system
This configuration ensures efficient hot water production, stable operation, and long-term energy savings.
A pressurized solar water storage tank holds hot water under stable pressure, allowing consistent flow for showers, faucets, and commercial use. It is ideal for solar heating systems and heat pump setups.
Riwatt tanks use thick insulation and corrosion-resistant materials to ensure long service life and high thermal efficiency. They are designed for both residential and commercial solar hot water systems.
Yes. Riwatt pressurized storage tanks are compatible with solar thermal collectors, heat pumps, and electric backup heaters—making them suitable for hybrid systems.
316L offers better corrosion resistance and is ideal for areas with hard water or coastal environments. 304 is suitable for standard residential use.
Thanks to polyurethane insulation, Riwatt tanks can retain hot water for up to 72 hours, depending on temperature conditions.
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