Flat Plate Collector Water Heater

The collector using D-DOS coating technology has a photothermal absorption efficiency of up to 93%, achieving efficient conversion of light energy into heat energy;
Innovative modular structure, greatly simplifying transportation and installation processes, saving time and effort, and adapting to rapid deployment in various scenarios;
Provide high-quality material options such as enamel and stainless steel, with pressure bearing design to ensure fresh water and meet hygiene standards, suitable for household and commercial scenarios;
Flexible adaptation to multiple capacities including 150L, 200L, and 300L, with adjustable bracket angles of 0°, 25°, and 45° to match different installation environments.

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Product Details

Why This Flat Plate Pressurized Solar Heater Stands Out

Looking for a smarter way to heat water year-round—even in freezing conditions? This flat plate solar water heater is your answer.

What Makes It Different?

A high-performance solar surface absorbs sunlight at an impressive 93%, turning it into usable heat efficiently.

The entire system is modular, sleek, and easy to install—no complex plumbing needed.

Choose the tank size and angle that fits your roof or ground setup. Everything is customizable.

It’s built tough: with no fragile glass parts, it stands up to hailstorms, high winds, and freezing nights.

The water you get is fresh and pressurized—perfect for showers, kitchens, and heating systems.

Perfect For

Daily home use or small-scale commercial settings.

Customers who want sustainable energy without compromise.

Benefits You’ll Notice

Collects more heat per square meter than vacuum tube models.

Delivers steady hot water pressure—ideal for multiple outlets.

Worry-free performance with no glass breakage risk.

Aesthetic and space-efficient—modern look fits any structure.

How It Works in Simple Terms
Sunlight hits the panel → the panel heats up a special liquid → this liquid moves heat into a tank → the tank delivers hot water under pressure whenever you need it.

Flat Plate Collector Water Heater

flat plate solar water heater

Collector	STK2.0-2	STK2.5-2
Overall area(m²)	2	2.5
Aperture area	1.87	2.34
L x W x H (mm)	2000x1000x80	2000x1250x80
Optical performance	78%
Absorber sheet	Al, highly selective coating
Frame	Aluminium

Enamel direct solar water heater

Model	STK-ET-150	STK-ET-200	STK-ET-300
Collector	STK2.0-2(x1)	STK2.5-2(x1)	STK2.0-2(x2)
Tank(L)	150	200	300
Dimensions	Φ520*1300	Φ580*1310	Φ580*1830
Insulation	PU foam 50 mm
Working pressure	7 bar
Inner tank material	2.0mm	2.5mm enamelled
Outer tank material	Powder-coated steel
Auxiliary heating	1.5 KW	2.0 KW	2.0 KW
Corrosion protection	Magnesium anode
Mounting material	0°/ 25°/ 45° Galvanized sheet

Enamel indirect solar water heater

Model	STK-EJ-150	STK-EJ-200	STK-EJ-300
Collector	STK2.0-2(x1)	STK2.5-2(x1)	STK2.0-2(x2)
Tank(L)	150	200	300
Dimensions	Φ520*1300	Φ580*1310	Φ580*1830
Insulation	PU foam 50 mm
Jacket Layer working pressure	2 bar
Working pressure	7 bar
Heat transfer medium	Glycol / water mixture
Inner tank material	2.0mm	2.5mm enamelled
Outer tank material	Powder-coated steel
Auxiliary heating	1.5 KW	2.0 KW	2.0 KW
Corrosion protection	Magnesium anode
Mounting material	0°/ 25°/ 45° Galvanized sheet

Stainless steel direct solar water heater

Model	STK-SS-150	STK-SS-200	STK-SS-300
Collector	STK2.0-2(x1)	STK2.5-2(x1)	STK2.0-2(x2)
Tank(L)	150	200	300
Dimensions	Φ520*1200	Φ580*1225	Φ580*1775
Insulation	PU foam 50 mm
Working pressure	7 bar
Inner tank material	SUS 304 / SUS 316L
Outer tank material	Powder-coated steel / SUS 201 / SUS 304
Auxiliary heating	1.5 KW	2.0 KW	2.0 KW
Corrosion protection	Magnesium anode
Mounting material	0°/ 25°/ 45° Galvanized sheet