
Mikrofill 35 Includes Mikrofill 3 PU Unit- 1x 35 Litre 3 Bar Vessels-Service Valve & Factory Pre-Commissioning
Mikrofill is a system that efficiently fills a water system to an optimal pressure level to achieve the best flow. The Mikrofill is designed to be connected directly to a building's incoming mains/boosted water supply and fill a heating or chilled water system without the use of a pump.
Key Features
- 97% more Energy efficient than some pump type units
- Integral fluid risk category 4 backflow prevention - No RPZ valve required
- Fills any LPHW/CHW system from empty - Connects directly to the mains/boosted water supply
- Wall mounted unit only 270 mm high x 250 mm wide - Compact enough to fit in the smallest of plant rooms
- Consumes 10 watts on standby and 30 watts fully operational per hour - 97% more energy efficient than some pump type units
- Fill volume indicator - Aids water treatment calculation
- Large colour screen display - Clear and concise instruction
- Pre - commissioned packages available - No on-site commissioning required when sold as a package
- WRAS Approved Product
Benefits
- No RPZ valve required
- Automatically monitors system and controls system pressure
- Connects directly to the mains water supply
- Provides early warning of system leakage and aids water treatment calculation
- Flexible Installation
- Clear status indication and intuitive set up
- No on-site commissioning required
Delivery
All our Pressurisation Units are for delivery by customer offload. This entails the customer to acquire the right manpower and/or machinery to help unload the tank/s from the delivery vehicle.
If you require any specific requirements regarding delivery, please call us before order is placed, where we will try and accommodate this facility for you.
| Capacity | 35 litres |
|---|
| General | |
| Approvals / Conformity Certification | WRAS Approved Product (1212069) UKCA, CE |
| Warranty | 2 Years |
| Connections | |
| Cold Water Inlet | 15 mm Compression |
| System Outlet | 15 mm Compression |
| Drain (Via Tundish) | 3/4'' BSP |
| Maximum Inlet Pressure | 5 Bar |
| Maximum Cold Fill Pressure | 4.7 Bar |
| Nominal Flow Rate | 14 l/ min |
| Dimensions | |
| Height x Width x Depth (mm) | 270 x 250 x 112 |
| Dry Weight (kg) | 5 |
| General | |
| Capacity (L) | 35 |
| Diameter (mm) | 376 |
| Height (mm) | 466 |
| Inlet | 3/4'' |
| Inlet height From floor (mm) | 130 |
| Weight (kg) | 5.6 |
| Performance | |
| Operating Pressure - Max | 3 Bar |
| Operating Temperature - Max | 70 °C |

Important — please read
Please ensure the product you are ordering is the correct size and suitable for the purpose. Special order, bespoke and non-stock tanks are not returnable. If you order a tank and find it is too big, too small, or unsuitable for your requirements, it can be expensive to return. Our cancellation & returns policy explains this in more detail — see Terms & Conditions.
Delivery charges
Our shipping costs cover most of the UK. However, parts of England, the Scottish Highlands and Islands (including areas north of the Glasgow / Edinburgh border), Isle of Wight, Channel Islands, Isle of Man, Anglesey, Western Isles, Shetland Islands, Orkney Islands, Isles of Scilly, Northern Ireland and the Republic of Ireland may cost more.
Please call before ordering if the delivery postcode is listed below. There may be additional shipping costs.
- AB
- BT
- CA
- CT
- DD
- DG
- EH
- FK
- G
- GY
- IM
- IV
- JE
- KA
- KW
- KY
- LD
- LL
- ML
- PA
- PH
- PO 30–41 Isle of Wight
- SA
- SY
- TD
- TN
- TR
- ZE
- Southern Ireland
Looking to avoid shipping charges?
All our tanks are available for collection ex works. Our suppliers are based all over the UK — please call if you wish to collect.
Overseas orders
International orders are welcome. Payment is by IBAN / SWIFT / BIC, MoneyGram and letters of credit. We regret that credit cards are not accepted for international orders.
A purchase order is required; we will then create a pro-forma invoice, and tanks are ordered on clearance of funds.
If you require additional export documentation — for example a Certificate of Origin, or commercial invoices certified by the Chamber of Commerce — you must notify us before completion of your order, as we will have to invoice cost and admin charges to the order.
Please call if you have any questions: +44 (0)1643 703358
Offloading
Unless a HIAB delivery has been booked at additional cost, it is the customer’s responsibility to offload with suitable equipment on the day of delivery. A failed delivery may result in additional charges.
We recommend that installers, plant hire and installation materials — excavators, aggregates and so on — are not booked until you are in receipt of the goods. Tanks Direct cannot be held responsible for costs incurred due to unforeseen delays; please see our terms for more details.
Any questions about your delivery? Contact the Sales Team on 01643 703358.
Thank you for your enquiry to return your order.
Please note, we may not be able to provide a refund for the original carriage costs paid and there may be further charges for restocking and collection to apply before your refund is processed.
Certain items may not be returnable, for example those made to order or for sanitary reasons. Please check the product page for more information.
If goods have been used, installed or are returned in less than 100% as new condition & we agree to take them back, further costs may apply. Please see our terms and conditions or contact us for more information on your specific order.
Talk to a
specialist
Sizing, regulations, installation. Our team has been answering these questions for over 25 years.
Why Tanks-Direct
22 years. 100,000+ tanks. Specialists, not generalists.
Nationwide delivery
GB and Northern Ireland covered. HIAB and crane offload available. Highlands and Islands quoted on request.
WRAS & BS EN compliant
Every potable tank is independently certified. Documentation supplied with each delivery.
Best-price guarantee
4.6/5 on Feefo from 1272 verified reviews. We price-match any genuine like-for-like quote.
Specialist advice
Trade-grade phone and email support, Mon-Fri 8am-5pm. Site visits for orders over £2,500.



