Read the information document regarding the minimum two-year legal warranty provided in the European Union.
LK ARMATUR - LK 550 AquaMix Thermostatic Mixer | 3/4'' Male Union Connection Kit with Check Valve | 38–65 °C
LK ARMATUR - LK 550 AquaMix Thermostatic Mixer | 3/4'' Male Union Connection Kit with Check Valve | 38–65 °C is backordered and will ship as soon as it is back in stock.
Description
Description
LK 550 AquaMix: thermostatic mixing with fitting kit and non-return valves
The LK ARMATUR LK 550 AquaMix is a mixing valve for domestic hot water systems. The thermostatic element regulates the temperature of the mixed water, and the knob allows setting the desired value within the stated range of 38–65 °C. The mixer body features G 1'' male threads. The included kit comprises fittings with integrated non-return valves, which screw onto the mixer body: with the kit installed, the system connection ports become 3/4'' male.
- Model: LK 550 AquaMix
- Threads on the mixer body: G 1'' male
- Included kit: fittings with integrated non-return valves
- Final connections with kit installed: 3/4'' male
- Stated regulation range: 38–65 °C
- Stated Kvs of the G 1'' mixer: 2.2 m³/h
- Stated weight of the mixer: 0.5 kg
Main features
- Thermostatic mixing: the thermostatic element regulates the temperature of the outlet water by mixing the two inlets.
- Control knob: allows setting the desired temperature.
- Included fitting kit with non-return valves: the fittings incorporate non-return valves and screw onto the mixer body, changing the external connection from G 1'' male to 3/4'' male.
- Identified connections: KV for cold water, VV for domestic hot water, and BV for the mixed outlet.
- Recirculation control: the manufacturer specifies the non-return valve on the cold connection to prevent natural recirculation.
Technical data
| Brand | LK ARMATUR |
| Model | LK 550 AquaMix |
| G 1'' mixer code in the manufacturer's data sheet | 090528 |
| Type | Thermostatic mixing valve for domestic hot water with fitting and non-return kit |
| Body thread | G 1'' male, before kit installation |
| System connections | 3/4'' male, with the included kit installed |
| Included fittings | To be screwed onto the mixer body, with integrated non-return valves |
| Stated Kvs of the G 1'' mixer | 2.2 m³/h; not a verified value for the fully assembled kit |
| Mixed water regulation | 38–65 °C, stated range |
| Stated weight of the mixer | 0.5 kg; total weight with fittings to be verified |
| KV | Cold water inlet |
| VV | Domestic hot water inlet |
| BV | Mixed domestic hot water outlet |
Contents and accessories
- LK 550 AquaMix mixer: body with G 1'' male threads.
- Included fitting kit: fittings with integrated non-return valves, to be screwed onto the mixer to obtain 3/4'' male final connections.
- LK 373 adapter: accessory indicated in the general documentation for the intended applications; it is not automatically identified as included with the kit nor stated as further included.
- Vent screw: the range description indicates it for G 1/2'' versions and with 15 mm compression fittings; it is not stated as included in this configuration.
Applications and regulation
- Domestic hot water systems: regulation of the mixed water temperature according to the system design.
- Connection via kit: consider the final 3/4'' male size for matching with the system fittings.
- Installation near boilers and storage tanks: comply with the requirements regarding spacing and protection from heat.
- Maximum temperature setting: the manufacturer describes a procedure for repositioning the knob. The adjustments occur in steps; a quarter turn corresponds approximately to 7 °C and the maximum described increase is half a turn. Follow the manual completely, without exceeding the product limits, and verify the actual temperature.
Official documentation
Frequently Asked Questions (FAQ)
Q: Are the connections 1'' or 3/4''?
A: The mixer body has G 1'' male threads. The included fittings screw onto the body and, once installed, bring the system connections to 3/4'' male.
Q: Are the non-return valves included?
A: Yes, they are integrated into the fittings of the included kit.
Q: How are the three connections connected?
A: KV is the cold inlet, VV the domestic hot water inlet, and BV the mixed outlet. Follow the arrow on the body and the direction of the non-return valves.
Q: What is the regulation range?
A: The stated range is 38–65 °C. The maximum temperature setting must be carried out according to the manual, checking the actual temperature.
LK ARMATUR - LK 550 AquaMix Thermostatic Mixer | 3/4'' Male Fitting Kit with Non-Return Valve | 38–65 °C
LK ARMATUR: solutions for the regulation of hydronic systems.
Security Information
Security Information
Data about the Person Responsible for the Product:
Contact Person Responsible for the Product:
Product Safety Document:
Warranty
Warranty
.
At BricoHome, we are committed to offering you high-quality products, aware that your peace of mind goes beyond a simple transaction. To ensure your complete satisfaction, we have implemented a robust warranty policy, demonstrating our commitment to quality and reliability.
In this section you will find information about our product warranty. We want you to be well-informed and confident in your choice, so we invite you to carefully read the warranty information. Our goal is to ensure you have a worry-free shopping experience, with the certainty that, if necessary, we are here to support you at all times.
Please contact us for any warranty request:
- Call us at 376 0343302
- Write to us at info@jicomputer.com
- Complete the contact form
Please specify: first and last name, order ID, brand, product, and issue. We will look for the fastest solution for you and contact the brands as necessary.
PRODUCT WARRANTY (STANDARD)
The warranty period is 12 months from the product purchase date for consumers who have an invoice. It is 24 months for those who have a receipt or other proof of purchase.
PRODUCT WARRANTY WITH SEAL
For sealed products (e.g., insecticide), the warranty does not apply once opened. However, if the seal remains intact, you are entitled to a free return within 30 days.
Shipments
Shipments
Shipping Details
Shipments are made via the following couriers

When ordering, you can enter your shipping preferences in the notes section, choosing the desired courier.
Shipping Costs:
- Italy area (except Sardinia)
- Standard shipping (€6.90), FREE for orders over €99
- Priority shipping (€9.90), reduced cost to (€3.90) for orders over €99
- Italy area (Sardinia only)
- Standard shipping (€10.90), FREE for orders over €99
- Eurozone 1 (Austria, Belgium, Croatia, Czechia, Denmark, France, Hungary, Luxembourg, Netherlands, Poland, Slovenia, Spain, Germany)
- Standard shipping (€19.99)
- Eurozone 2 (Romania)
- Standard shipping (€24.95)
Shipping times:
- 24/48 WORKING HOURS FOR NORTHERN AND CENTRAL ITALY;
- 48/72 HOURS FOR SARDINIA AND MINOR ISLANDS;
- 24 WORKING HOURS FOR SOUTHERN ITALY INCLUDING SICILY;
Returns are always guaranteed and FREE, within 30 days of purchase.
Free returns
Free returns
In any case, the consumer buyer has the right to withdraw from the contract without penalty and without specifying the reason within 30 days of receiving the purchased goods . If the withdrawal occurs within this period, we will arrange for the collection of the goods by courier at our expense , without the customer having to take any action. The customer must provide us with a date and time slot of at least 3-4 business hours , so we can schedule the collection at a convenient time.
- Refunds (if applicable)
Once we receive your return, we will carry out all necessary checks, verifying various aspects: such as the presence of the original box, the presence of any accessories or parts included, any damage not present in the original new product, etc. If your request is approved, the refund will be processed and a credit will automatically be applied to your card or original payment method. within 5 working days.
- Changes (if applicable)
We only replace items if they are defective or damaged.
In the event that the Consumer decides to exercise the right of withdrawal within the timeframes indicated above, you must notify the seller of this By email to info@jicomputer.com, or by completing the easy return form by clicking here.
If your return request exceeds 30 days, please provide as many details as possible so we can better assess the situation. Please note that in this case, the customer will be responsible for the return shipping costs.
Tax Deductions
Tax Deductions
A guide to purchasing with tax deductions and reduced VAT on Bricohome
If you're purchasing products for renovations, home improvements, or for specific needs, you may be eligible for significant tax breaks. Find out how to access these benefits and make your purchases even more affordable.
Who is entitled to it?
Tax breaks and reduced VAT are reserved for:
- Private citizens carrying out building renovation or energy efficiency improvement work;
- Condominiums for work on common areas;
- Companies and professionals who carry out specific interventions;
Which products are eligible for the discounts?
Not all products are eligible for tax relief. Generally , tax relief applies to materials and devices used for renovation, energy efficiency, and architectural barrier removal projects. To check the suitability of a specific product , we recommend that you consult the current legislation or contact our customer service.
On Bricohome, the most popular product categories eligible for the discounts include: Electric pumps, Pressure controls, Taps, Thermostats, Control units, Circulators, Intercoms and video intercoms.
Reduced VAT rates
Depending on the type of intervention, different VAT rates apply:
- 4% for the construction or purchase of a first home (if eligible).
- 10% for extraordinary maintenance, restoration, or renovation work.
- 22% for all products not subject to tax relief.
How to apply for the discount on Bricohome
To obtain the reduced VAT, it is necessary to:
-
Place your order on Bricohome by selecting bank transfer as your payment method.
-
Send a request to ......... with the subject line: "Tax deduction request for order ..." (the order number will arrive a few seconds after confirming the order on the website). Specify and provide the following information:
- Name
- Surname
- Address
- Telephone
- Tax ID code
- Type of deduction
- Reference protocol number
- Attach a copy of your identity document
- Attach documents certifying your eligibility to meet the requirements.
-
Please wait for your request to be processed. We will issue an invoice and send you bank transfer instructions within 48 business hours.
-
Make the transfer following the instructions received.
-
Once payment is received, we will proceed with the shipment of the goods.
Doubts or questions?
Write to us at info@jicomputer.com
Call us at +39 376 0343302

