Solar Thermal Accessories
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Solar Thermal System Accessories
Millionsun supplies a full range of solar thermal system accessories — from mounting brackets and circulation pipes to controllers, valves, and expansion vessels. Every accessory is designed to work with Millionsun’s flat plate collectors and tanks, and is compatible with most standard solar thermal systems on the market.
What We Offer?
OEM Manufacturing Support
Private Label Production
Full Range: Brackets, Pipes, Valves, Controllers, Heaters, Vessels
Compatible with Millionsun Systems & Standard Solar Thermal Systems
Bulk or Kit Supply Options
Single Source for All Accessories — Simplify Your Procurement
Accessories Overview
Mounting Brackets — Strong, Durable, Easy to Install
Connects your solar collector and tank to the roof. Designed for strength, easy installation, and long service life.
| Thermosiphon System | 1.5m² / 100L | 2m² / 150L | 2.7m² / 200L | 4m² / 200L | 4m² / 300L | 6m² / 400L | — |
| Weight | 18 Kg | 21 Kg | 23 Kg | 24 Kg | 27 Kg | 32 Kg | — |
| Forced System | 1.5m² / 100L | 2m² / 150L | 2.7m² / 200L | 4m² / 200L | 4m² / 300L | 6m² / 400L | 8m² / 500L |
| Weight | 10 Kg | 12 Kg | 16 Kg | 18 Kg | 18 Kg | 24 Kg | 32 Kg |
| Material | Steel or Aluminium Alloy | Coating | Hot-Dip Galvanization and UV Coating for Steel | Working Life | Over 25 Years | ||
Installation angle adjustable from 15° to 60°. Flat or sloped roof compatible.
Circulation Pipe — Insulated, Ready to Connect
Pre-insulated copper pipe set for connecting collectors to the storage tank.
| Spec | Detail |
|---|---|
| Material | TP2 Copper |
| Quantity | 1 Set (2 Pieces) |
| Diameter | Φ22mm |
| Thickness | 1mm |
| Insulation | Polyethylene, UV-Resistant |
| Outer Wrap | Aluminum Foil Adhesive Tape |
T/P Valve — Temperature & Pressure Safety
Dual safety protection for solar water heaters. Automatically releases pressure or temperature when either exceeds safe limits.
| Work Pressure | 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.4 MPa | ||||||
| Pressure Deviation | ±3% | ||||||
| Work Temperature | 4°C–99°C | ||||||
| Standard | ANSI Z21.22, ASI 1357 | ||||||
| Model | Import × Export (in) | A (mm) | B (mm) | D (mm) | T (mm) | Weight (g) | Temp. Steam BTU/hr |
|---|---|---|---|---|---|---|---|
| WAY--15 | R1/2 × RP1/2 | 41 | 82 | 29 | 101 | 237 | 15,000 |
| WAY--20 | R3/4 × RP3/4 | 42 | 83 | 29 | 100 | 258 | 100,000 |
Air Vent Valve — Automatic Air Release
Automatically releases air from the solar thermal system. Prevents air locks that reduce circulation efficiency.
| Type | DN | D (mm) | H (mm) | a (mm) | Max. Operating Pressure | Max. Operating Temperature | Screw Standard |
|---|---|---|---|---|---|---|---|
| MS-012 | 3/8" | 46 | 70 | 9 | 10 bar | 110°C | ISO 228/1 |
| MS-015 | 1/2" | 46 | 70 | 9 | 10 bar | 110°C | ISO 228/1 |
| MS-020 | 3/4" | 46 | 70 | 8.5 | 10 bar | 110°C | ISO 228/1 |
Thread standard: ISO 228/1.
Expansion Vessel — Pressure Stabilization
Maintains stable system pressure and accommodates thermal expansion of the heat transfer fluid.
| Capacity | Max. Pressure | Max. Temperature | Connection | Materials |
|---|---|---|---|---|
| 5L | 8 bar | 99°C | 3/4" or 1" | SUS304 Connector / Carbon Steel Body / EPDM Membrane |
| 8L | 8 bar | 99°C | 3/4" or 1" | SUS304 Connector / Carbon Steel Body / EPDM Membrane |
| 12L | 8 bar | 99°C | 3/4" or 1" | SUS304 Connector / Carbon Steel Body / EPDM Membrane |
| 18L | 8 bar | 99°C | 3/4" or 1" | SUS304 Connector / Carbon Steel Body / EPDM Membrane |
| 24L | 8 bar | 99°C | 3/4" or 1" | SUS304 Connector / Carbon Steel Body / EPDM Membrane |
Controller — Intelligent System Management
Digital controller for managing solar thermal system operation. Automates pump circulation, temperature monitoring, and backup heating.
- Parameters:
- Self consumption: ≤3W
- Temperature range: 0–150°C
- Pump power: ≤600W
- Booster power: ≤3000W
- 3 temperature sensor inputs (tank top, collector, tank bottom)
- 3 output signals (booster, circulation pump, end-use pump)
- Functions:
- Temperature difference circulation
- Frost protection
- Overheating protection
- Auxiliary heating
- 3-period time control
- Force heating
- Error indication
- Memory function
Electric Heating Element — Backup Heating
Direct electric heating for storage tanks. Ensures hot water availability when solar input is insufficient.
| Power | Voltage | Application |
|---|---|---|
| 1.5 kW | 220V / 110V | Standard residential tanks |
| 3.0 kW | 220V / 110V | Larger residential and small commercial tanks |
| 9.0 kW | 220V / 380V | Large commercial tanks |
Thermostat controlled. Automatic temperature regulation.
Copper Fittings & Connectors
High-quality copper fittings for connecting system components. Compatible with standard solar thermal pipework.
Available per system model:
- Customised according to your system requirements
One Source, Full System Compatibility
All accessories are designed to work with Millionsun collectors and tanks. No compatibility issues, no mismatched connections, no on-site modifications.
Bulk or Kit Supply
Order individual parts for replacement and maintenance, or complete accessory kits for new system installations. Simplify your procurement.
OEM / Private Label Available
Your brand on our accessories. Custom packaging and labeling for distributors and system brands.
Quality You Can Rely On
Every accessory is inspected before shipment.
Export-Ready Packaging
All accessories packed for sea freight. Labeled and documented for smooth customs clearance.
Complete Your System — Ready-to-Order Kits
Not sure which accessories you need? We have bundled the most common combinations into ready-to-order kits. Pick your system type and we will include everything required for a complete installation.
Thermosyphon System Kit
- 1~3 collector
- 1 storage tank
- 1 bracket set
- 1 insulated pipe set
- 1 T/P valve
- 1 air vent valve
- 1 electric heating element
Split System Kit
- 1–3 collectors
- 1 storage tank
- 1 bracket set
- 1 controller
- 1 expansion vessel
- 1 circulation pipe set
- 1 T/P valve
- 1 air vent valve
Replacement Parts Kit
- T/P valve
- air vent valve
- electric heating element
- gasket set — all commonly replaced parts in one package
Custom Kit
Tell us your system configuration. We will recommend the right accessory list and provide a bundled price.
Frequently Asked Questions
Do you offer OEM service for accessories?
Yes. Brackets, pipes, controllers, and other accessories can be branded with your label and packaged for your market.
Can I order accessories separately, without collectors or tanks?
Yes. All accessories are available as standalone products. Order what you need.
Are these accessories compatible with non-Millionsun systems?
Most accessories use standard connections and are compatible with standard solar thermal systems. The bracket dimensions are designed for Millionsun collectors but can be adapted.
What is the minimum order for accessories?
MOQ varies by product type. Small quantities available for replacement parts. Volume pricing for bulk orders.
How are brackets protected against rust?
Double-layer coating: hot-dip galvanization followed by UV-resistant top coating. Tested for 25+ year service life.
Request OEM Quotation
Receive customized pricing based on your branding, configuration, and volume requirements.
Visit Our Factory
Building 14, Baiwang Science and Technology Park, No.40, Chuangxing North Road, Gaobu Town, Dongguan City, Guangdong Province, China