Maxiflame LK 551 HydroKit Solar M 3/4 thermostatic valves - for ACS
The LK 551 HydroKit Solar is a pre-assembled hydraulic kit consisting of thermostatic valves , designed for the management and optimisation of domestic hot water production in solar thermal systems.
Compact and ready to use, it integrates all mixing, diversion and safety functions in a single module, ensuring comfort, energy efficiency and system protection.
What it is and what it is used for
HydroKit Solar is a combination of thermostatic valves designed for systems with two heat sources (e.g. solar + boiler).
Its task is:
- keep the water temperature constant
- automatically manage the transition between solar source and integration
- optimize the use of solar energy
Designed specifically for solar thermal ACS systems
How it works
The system integrates:
- ✔ thermostatic mixing valve (35–65°C)
- ✔ thermostatic diverter valve (42–52°C)
- ✔ anti-scald function
In practice:
- if the solar water is already hot → it is sent directly to the user
- if it is not sufficient → it is diverted towards the integrative source
✔ Temperature stability ±3°C
Why it is advantageous
✔ Security
Prevents burns and protects the system from excessively high temperatures
✔ Integrated anti-scald protection
✔ Energy efficiency
Make the most of free solar heat
✔ Constant comfort
Water always at the set temperature
✔ Intelligent integration
Automatically manages the switch between solar and boiler
✔ Easy installation
Ready to use plug & play system
Installation
It is installed between:
- solar boiler
- sanitary network / boiler
✔ typical pattern:
- collectors → boiler → HydroKit → utilities
✔ Quick and easy assembly, with connection kit included
Installation to be carried out according to regulations by qualified personnel.
Technical features
- Connections: G 3/4 male
- Mixing temperature: 35–65°C
- Temperature deviation: 42–52°C
- Max pressure: 10 bar
- Operating temperature: 5–95°C
- Temperature stability: ±3°C
- Body material: CW617N brass
- Fluids: water / water-glycol up to 50%
- Kvs: 1.6 m³/h (code 181588)
- Weight: about 1.6 kg
✔ Connection kit included (fittings, gaskets, check valves).
NB: FOR FURTHER TECHNICAL DETAILS WE RECOMMEND CONSULTING THE ATTACHED TECHNICAL DATA SHEET.
WARRANTY
The warranty is the official Maxiflame one and lasts 2 years.
