FenFlex Light: Advanced UV and LED Curing
Light curing packer bladders that deliver faster cure times as well as excellent cure quality. As a key …
Silicone Calibration Hose
Calibration Hoses (also known as expansion or inversion bladders and inflation or cal tubes) are typically used in …
FenFlex Light: Advanced UV and LED Curing
150% Expansion
FenFlex Light delivers market-leading packer bladder expansion
Light curing packer bladders that deliver faster cure times as well as excellent cure quality.
As a key part of our pipe rehabilitation range, FenFlex Light is our highly engineered CIPP packer bladder designed to deliver maximum translucency, expansion and tear strength.
The exceptional translucency offered by FenFlex Light ensures that both UV and LED light passes through the bladder with ease, speeding up the curing process without compromising the quality of the cure.
Minimal Stretch
After enduring 200% extension for 16 hours at 150°C, FenFlex Light stretched only 7.5%, illustrating exceptional reusability
FenFlex Light is designed to reduce the lifetime cost of CIPP bladders. This is achieved through exceptional bladder expansion of 150% making and a single bladder suitable for a wide range of pipe diameters. As well as this, FenFlex Light is built and tested to deliver up to 60 reuses.
Having worked extensively with leading curing system manufacturers to understand their needs, we recognise that packer bladders operate in robust operational environments. That’s why FenFlex Light is built to deliver outstanding tear strength, giving you confidence in its durability to withstand many of the common causes of tears that lead to complete packer bladder failure. We can also optimise FenFlex Light to ensure that it works in sync with your unique curing system to deliver the best possible results consistently.
Silicone Calibration Hose
Highly Durable
Over a wide temperature range (-40ºC to 200ºC / -40ºF to 392ºF)
Calibration Hoses (also known as expansion or inversion bladders and inflation or cal tubes) are typically used in conjunction with open ended liners within CIPP (Cured-In-Place Pipe) rehabilitation and repair processes. Their function is to provide:
- A pathway for the curing agent
- Pressure against the inner wall of the liner during curing while it sets in place
Fenner Precision’s unique Silicone Calibration Hoses have been supplied to the No – Dig market since CIPP’s invention around 50 years ago, providing a reusable and high quality solution for pipe renewal and repair.
Reusable
Manufactured from a unique combination of silicone rubber and polyester fabric, products are precision-engineered to offer significant advantages over disposable products on the market.
Although usually used in the renovation and repair of worn or damaged lateral and internal pipes, Fenner Precision’s Calibration Hoses can also be used for renewal of mainline sewer pipes, potable water pipes, oil and gas pipes, chimney flues and more.
Connection bladders (T & Y Bladders)
Connection Bladders are available in a range of sizes, materials, thicknesses and configurations, including T and Y shaped …
Liner Gun Bladders
Silicone Liner Gun Bladders are engineered to enable the pipe rehab liners to be blown into the pipe, …
Connection bladders (T & Y Bladders)
Connection Bladders are available in a range of sizes, materials, thicknesses and configurations, including T and Y shaped and Top Hat, to tackle virtually every type of connection or junction between main and lateral pipes.
T and Y Bladders
T and Y Bladders are ideal for the repair of main to lateral pipe connections, manufactured on tools to meet the precise size requirements of different contractors, and specific trenchless repair challenges :
- Advanced silicone formulations and specially selected reinforcement fabrics means Fenner Precision’s T and Y Bladders are tough but flexible, and reusable for long-term cost effectiveness
- Red or translucent material
- Single Ply or 2 Ply material construction
- 90° and 45° connection angles
- Lateral lengths of up to 100m / 325ft
Benefits include excellent expansion and flex properties, added durability, high temperature resistance, and maximum re-usability.
Related Case Studies
Liner Gun Bladders
Silicone Liner Gun Bladders are engineered to enable the pipe rehab liners to be blown into the pipe, efficiently and reliably.
The design features cuffs at each end for easy, secure attachment via jubilee clips within the Liner Gun.
Related Case Studies

Value Adding Features
- Allows easy installation of pipe rehab liners
- High strength silicone provides durable and reliable use time and time again
- Custom sizes and thicknesses
Connection Bladders (Top Hats)
Connection Bladders are available in a range of sizes, materials, thicknesses and configurations, to tackle virtually every type …
Liner Gun Bladders
Silicone Liner Gun Bladders are engineered to enable the pipe rehab liners to be blown into the pipe, efficiently and reliably.
The design features cuffs at each end for easy, secure attachment via jubilee clips within the Liner Gun.
Related Case Studies

Value Adding Features
- Allows easy installation of pipe rehab liners
- High strength silicone provides durable and reliable use time and time again
- Custom sizes and thicknesses
Connection Bladders (Top Hats)
Connection Bladders are available in a range of sizes, materials, thicknesses and configurations, to tackle virtually every type of connection or junction between main and lateral pipes.
Lateral Renovation Top Hats
Manufactured on tools using the same high quality silicone material as our calibration hose, Fenner Precision’s Top Hats are designed to offer maximum flexibility across different main / lateral connections :
- Product is tailored to meet the specific connection size
- Lateral lengths of up to 100m / 325ft
- Red or translucent material
- Single Ply or 2 Ply material construction
- A flat main section enables the customer to cut-to-size as required.
Benefits include excellent expansion and flex properties, added durability, high temperature resistance, and maximum re-usability.