Read the information document regarding the minimum two-year legal warranty provided in the European Union.
MUT - VTD25E Thermostatic Diverter Valve | 3-Way | Solar Thermal | 45–55°C | G1 Thread
MUT - VTD25E Thermostatic Diverter Valve | 3-Way | Solar Thermal | 45–55°C | G1 Thread is backordered and will ship as soon as it is back in stock.
Description
Description
MUT VTD25E — 3-Way Thermostatic Diverter Valve for Solar Thermal Systems | 45-55°C | G1
The MUT VTD series thermostatic diverter valve, model VTD25E, is designed to be installed between the boiler and the solar hot water cylinder, where it functions as an automatic thermostatic 3-way valve. It senses the temperature of the domestic hot water coming from the solar hot water cylinder and diverts it based on the set temperature threshold: if the temperature exceeds 45°C, the valve diverts the water — already sufficiently hot — directly into the system. If the temperature is below 45°C, the valve sends the preheated water to the instant wall-mounted boiler, which will bring it to the desired temperature, utilizing the heat already present in the water to consume less gas. Made in Italy, brass body, G1 thread.
- Model: VTD25E
- SKU: 7.0300.1446
- Type: 3-way thermostatic diverter valve
- Thermostatic threshold: 45°C-55°C
- Thread: G1 (internal and external ISO 228/1)
- Nominal pressure: PN 10
- Max static operating pressure: 14 bar
- Max dynamic operating pressure: 5 bar
- Max inlet temperature: 120°C
- Kvs H: 1.0 m³/h — Kvs C: 0.9 m³/h
- Fluid: Water
- Made in Italy: Yes
Operation
The valve senses the temperature of the domestic hot water coming from the solar hot water cylinder and acts as a 3-way valve:
- Temperature > 45°C — the valve diverts the water, already sufficiently hot, directly to the system/outlets, bypassing the boiler.
- Temperature < 45°C — the valve sends the preheated water to the instant wall-mounted boiler, which will bring it to the desired temperature, utilizing the heat already present to reduce gas consumption.
Main features
- Automatic thermostatic function — no electric actuator — diversion occurs mechanically based on the fluid temperature, without the need for electrical power, external sensors, or control units.
- High energy savings — allows the use of the natural circulation solar panel even during winter; the boiler intervenes only to supplement the missing heat, significantly reducing gas consumption.
- 45°C-55°C threshold — optimal calibration range for solar thermal systems combined with instant wall-mounted boilers for domestic hot water production.
- EN 12165:98-CW617N brass body — high-quality corrosion-resistant material, suitable for hot and cold domestic water.
- EN 12164:98-CW614N brass obturator — precision obturator with FKM O-ring and stainless steel spring for reliability and long-lasting durability.
- ISO 228/1 G1 internal and external thread — compatible with standard fittings for Italian and European plumbing systems.
- Made in Italy — MUT Meccanica Tovo — produced in Italy by MUT Meccanica Tovo, a leading Italian company in the professional thermohydraulic sector since 1960.
Technical data
| Model | VTD25E |
| SKU | 7.0300.1446 |
| EAN | 703001446 |
| Type | 3-way thermostatic diverter valve |
| Thermostatic threshold | 45°C - 55°C |
| Thread (G) | G1 (ISO 228/1, internal and external) |
| Length (L) | 64 mm |
| Height (A) | 32 mm |
| Width (C) | 88 mm |
| Kvs H (m³/h) | 1.0 |
| Kvs C (m³/h) | 0.9 |
| Nominal pressure | PN 10 |
| Max static pressure | 14 bar |
| Max dynamic pressure | 5 bar |
| Max inlet pressure | 5 bar |
| Max inlet temperature | 120°C |
| Fluid | Water |
| Body | EN 12165:98-CW617N brass |
| Obturator | EN 12164:98-CW614N brass |
| O-ring | FKM |
| Spring | Stainless steel |
| HS code | 8481.20.90 |
| Country of origin | Italy |
Ideal applications
- Solar thermal systems with a hot water cylinder and instant wall-mounted boiler — installed between the solar hot water cylinder and the boiler, it maximizes the use of solar energy while minimizing boiler intervention to the bare minimum.
- Natural circulation solar systems — compatible with natural circulation solar systems (thermosyphon), ensuring proper operation even during winter when the hot water cylinder temperature does not reach summer levels.
- Energy savings and emission reduction — by utilizing the heat already present in the water preheated by the solar system, it significantly reduces gas consumption and the system's CO₂ emissions.
- New installations and replacements — the standard G1 thread and compact dimensions (L=64mm) facilitate installation in any system configuration.
Official documentation
Technical data sheet: Download the MUT VTD25E technical data sheet (PDF)
Frequently Asked Questions (FAQ)
Q: How does the VTD25E valve work?
A: The valve senses the temperature of the water coming from the solar hot water cylinder. If it exceeds 45°C, it diverts the water directly to the outlets without passing through the boiler. If it is below 45°C, it sends the preheated water to the boiler, which will bring it to the desired temperature while consuming less gas.
Q: Does it need electrical power?
A: No. The VTD25E is a mechanical thermostatic valve: diversion occurs automatically based on the fluid temperature, without the need for electrical power, sensors, or control units.
Q: Is it compatible with my natural circulation solar system?
A: Yes. The VTD25E is specifically designed for natural circulation (thermosyphon) and forced circulation solar systems combined with instant wall-mounted boilers for domestic hot water production.
Q: What is the difference between the 45-55°C and 40-50°C versions?
A: The VTD25E 45-55°C version (the one for sale) has a diversion threshold of 45°C and is suitable for most solar systems combined with instant boilers. The 40-50°C version has a lower threshold, intended for systems with lower operating temperatures.
MUT - VTD25E Thermostatic Diverter Valve | 3-Way | Solar Thermal | 45-55°C | G1 Thread
MUT Meccanica Tovo: professional thermohydraulic components Made in Italy since 1960.
Security Information
Security Information
Data about the Person Responsible for the Product:
Contact Person Responsible for the Product:
Product Safety Document:
Warranty
Warranty
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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@bricohomeferramenta.it
- 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@bricohomeferramenta.it, 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:
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Place your order on Bricohome by selecting bank transfer as your payment method.
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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.
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Please wait for your request to be processed. We will issue an invoice and send you bank transfer instructions within 48 business hours.
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Make the transfer following the instructions received.
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Once payment is received, we will proceed with the shipment of the goods.
Doubts or questions?
Write to us at info@bricohomeferramenta.it
Call us at +39 376 0343302


