20701S284

ModvBox Pump Unit Fixed with 20-45 deg C fixed point 3 Kvs, 25kW

£314.84

3 in stock

Lifetime Technical Support

Fast UK Delivery

Design Services Available

Trusted for over 20 years

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The Modvbox Pump Unit Fixed (3 Kvs, 25 kW) is a compact DN20 fixed-point thermostatic mixing module. It is designed to slide directly into multi-zone Modvbox distribution boxes to feed underfloor heating loops. The pre-assembled setup provides consistent water temperatures without needing complex secondary electronic controllers.
The system features an integrated thermostatic mixing valve with an adjustable range of 20°C–45°C. It handles a thermal capacity up to 25 kW at a 3.0 Kvs flow coefficient. A high-efficiency circulating pump comes pre-wired, and integrated thermometers allow for instant temperature checks on both supply and return lines.
  • Fixed-Point Thermal Control: The manual thermostatic valve safely regulates delivery temperatures between 20°C and 45°C.
  • 25 kW System Capacity: It provides balanced fluid delivery for low-temperature zones up to a 25 kW maximum threshold.
  • Integrated 3.0 Kvs Mixer: The internal valve maintains steady flow rates with a 3.0 Kvs flow value.
  • Modvbox Space Optimisation: The structural frame slides into standard Modvbox configurations to reduce overall pipe footprint.

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DELIVERY OPTIONS:

We currently offer two shipping options to get your goods to you in a timeframe that suits:

Standard delivery to mainland UK (3-5 working days) – £9.99
Next working day delivery to mainland UK* – £11.99

*Next working day deliveries are subject to orders being placed before 1pm. The delivery window for next working day deliveries is between 8am and 5.30pm. 

All orders received after 1pm on a Friday (including weekend orders), that have upgraded to next working day delivery, will be despatched on Monday for a Tuesday delivery.

Bank holidays are treated in the same way as a non-working day, so please take this additional delivery time into account when ordering.

Pallet Delivery
Next day pallet delivery to mainland UK – £72.00

Special delivery requirements
Can’t see what you’re looking for? If you require a delivery option that is not offered as standard on the website, please contact our team. Where possible we try to accommodate additional requirements, including timed delivery options and deliveries to non-mainland UK addresses.

Please note: We rely upon the services of third party couriers, and whilst we endeavour to always deliver in a timely manner there are unfortunately a few occasions when the couriers fail to deliver on the appointed day and before the specified time. Whilst this happens rarely, we cannot be held responsible for the late delivery of an item, or any costs incurred by customers’ tradespeople unable to work. Please ensure that you have your materials before booking in any trades. If your product has been delayed, we will do our best to keep you informed of any new estimated time and date of your delivery.

NEED HELP?
Our customer support team is here to help with any queries about your order and delivery requirements.

Email: customerservices@tradeunderfloor.co.uk

Call: 01283 850040 

Monday to Friday | 8:30am – 4:30pm

Trade Accounts

Are you a regular customer with a buying history, a home builder, installer, or merchant?

We offer trade accounts with exclusive pricing on our range of products as well as a range of services.

Click here to apply for your trade account!

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