Sealed System Pressurisation Units

The Trebles range of sealed system pressurisation units includes single and twin pump configurations, with floor-mounted and wall-mounted options to suit different installation requirements. Our own manufactured range includes the PH Units and the popular Trebles Pressbox, alongside a selection of pressurisation units from leading manufacturers.

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Compact by Design

Compact, packaged designs with floor-mounted and wall-mounted options to make the most of your available installation space.

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Fast Delivery

A wide selection of pressurisation units held in stock, with next-day delivery available to help keep projects on schedule.

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Built for Easy Servicing

Practical, service-friendly designs with accessible components to simplify routine maintenance and help minimise system downtime.

Pressurisation Unit

Trebles PH Units

Trebles floor-mounted pressurisation units combine practical features with a simple, robust design. Available in four configurations to suit different system requirements.

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Trebles Pressbox

Trebles Pressbox

The Trebles Pressbox is a compact, wall-mounted pressurisation unit designed to provide a space-saving solution where installation space is limited.

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Open Pressbox

Alongside our own manufactured products, Trebles supplies pressurisation units from other leading manufacturers, including Grundfos, Lowara and Flamco. A selection of these units is also held in stock for prompt availability.

A Selection of Grundfos, Lowara & Flamco Pressurisation Units…

Grundfos PHT

Grundfos PHT Range

The Grundfos PHT range combines reliable pumps, advanced pressure monitoring and…
Flamco Pressurisation Unit

Flamco Pressurisation Units

Trebles supplies Flamco pressurisation units for commercial and industrial heating and…
Lowara Pressurisation Unit

Lowara Presfix

Lowara Presfix pressurisation units are designed to maintain system fill pressure…

What Trebles Customers Think

We relied on Trebles expertise to ensure the right products were sourced for our project.

Matthew Gidley – Senior Contracts Engineer, JS Wright

Top workmanship and a professional attitude from a supportive team

Richard Leek – Project Manager, Marshdale

Excellent customer service again! You genuinely make my life so much easier

Anthony Gooding – Director, HSP

Excellent service and a company I would recommend to anyone in future

Jason Goldsmith – Supervisor, Interserve

Engineers were very professional with an excellent knowledge of their trade

Martin Deakin – Gas Surveyor, Bromford

We’re writing to express our sincere thanks to all who help ensure our hospitals are able to run smoothly

Richard Hill – Estates Manager, London Road Community Hospital

Job delivered and commissioned at the height of the pandemic with no changes to the excellent service we always receive.

Carl Berridge – MD, Powergas

The team at Trebles were great. I really can’t praise them enough.

Richard Beard – Club Secretary, Belvedere Park FC

Not many providers would be able to fully breakdown & rebuild a booster on site

Clive Bradley – Senior Contracts Engineer, JS Wright