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Riwatt Pressurized Solar Water Storage Tank for Efficient Hot Water Systems
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.
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PRODUCT DETAILS
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.
SStorage Tank Specification:
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
Solar Water Tank Key Features:
● 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
Pressurized Solar Water Tank Parameters:
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
What Is the Application of a Solar Water Tank?
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.
FAQs – Riwatt Pressurized Solar Water Storage Tank:
1. What is a pressurized solar water storage tank?
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.
2. Why choose Riwatt pressurized tanks?
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.
3. Can it work with heat pumps or solar collectors?
Yes. Riwatt pressurized storage tanks are compatible with solar thermal collectors, heat pumps, and electric backup heaters—making them suitable for hybrid systems.
4. What is the recommended material — 304 or 316L stainless steel?
316L offers better corrosion resistance and is ideal for areas with hard water or coastal environments. 304 is suitable for standard residential use.
5. How long can the tank keep water hot?
Thanks to polyurethane insulation, Riwatt tanks can retain hot water for up to 72 hours, depending on temperature conditions.