The experts in pipe freezing and live pipework
The experts in pipe freezing and live pipework
Bishop Pipe Freezing are international pioneers in on-site pipe freezing, delivering safe, controlled isolation of live pipework without draining systems or shutting operations down.
We work on pipe sizes from ½” (15mm) to 24” (600mm), at pressures up to 250 bar and temperatures up to 200°C, across the UK and internationally.
Whether it’s a critical industrial installation or a small but urgent facilities issue, pipe freezing allows work to be completed quickly, safely, and with minimal disruption.
Pipe freezing is a controlled process where liquid nitrogen is applied to a section of pipe using specialist jackets. This forms a temporary ice plug, stopping flow long enough for maintenance, repair or modification to take place.
Once work is complete, the freeze is safely released and the system returned to service – without draining, refilling, or shutting down entire systems.
Pipe freezing is ideal when:
It is routinely used for:
A short description of the service and how the visitor will benefit from it.
A short description of the service and how the visitor will benefit from it.
A short description of the service and how the visitor will benefit from it.
A short description of the service and how the visitor will benefit from it.
A short description of the service and how the visitor will benefit from it.
A short description of the service and how the visitor will benefit from it.
A short description of the service and how the visitor will benefit from it.
A short description of the service and how the visitor will benefit from it.
From small plant rooms to complex, high-risk systems, our approach is the same: engineered, safe and proven.
Pipe freezing enables safe dead leg removal without draining whole systems, reducing Legionella risk.
When failures occur on live systems, pipe freezing enables rapid isolation and repair while keeping buildings operational.
Old or failed valves can be replaced without draining large systems, saving time, water and cost.
Pipe freezing is often the only viable option where shutdown would be unsafe, impractical or prohibitively expensive.
Established in 1972, Bishop Pipe Freezing is one of the most experienced pipe freezing providers in the world.
We provide a complete end-to-end solution, including pipe cutting, valve installation and all associated works – not just the freeze itself.
We pioneered the use of super-insulated vacuum hoses in the UK, allowing safe transfer of liquid nitrogen over distances of up to 50 metres. This enables work in confined or difficult locations without bringing nitrogen vessels close to the work area.
Our specialist jackets and processes allow us to work at pressures up to 200 bar and temperatures up to 200°C, safely and reliably.
Yes. Bishop Pipe Freezing regularly carries out freezes on hot water systems, including high-temperature applications.
When carried out by experienced specialists using the correct equipment and procedures, pipe freezing is a proven and safe method used worldwide for critical systems.
From ½” (15mm) domestic pipework up to 24” (600mm) industrial systems.
Pipe freezing is not suitable for all materials [due to the risk of brittle fracture] or flow conditions. We will always assess suitability and advise honestly if an alternative method is required.
