Key Features

Flexible Pipe Dimension mm Temp Range Max Alarm System Operating Pressure Diffusion Barrier Series of Insulation thickness Lambda Value W/mk
PexFlex 20,25,32,40,50,63,75,90, & 110

0°C to 85°C

(continuous)

No 6 bar Yes  1 & 2 0.023
PexFlex Twin 16-16, 20-20, 25-25, 32-32, 40-40, 50-50, 63-63,

0°C to 85°C

(continuous)

Max operating Temperature 105°C

No 6 bar Yes  1 0.023
AluFlex 16, 20, 26 & 32

0°C to 90°C

(continuous)

Max operating Temperature 105°C

No

10 bar Yes 1 & 2 0.023

AluFlex Twin

16, 20, 26 & 32

0°C to 90°C

(continuous)

Max operating Temperature 105°C

No 10 bar Yes 1 & 2 0.023

Description of Flextra Pipe System

Logstor FlextraPipe is the latest generation of the well-proven Logstor FlexPipe bendable pre-insulated pipe. The big difference is that it is up to three times as flexible as current LOGSTOR FlexPipe products – while the built-in diffusion barrier retains its full insulation properties throughout the entire service life of the pipe.

This remarkable flexibility stems from a unique combination of the new corrugated outer casing and newly formulated cellular insulation foam that is considerably softer. This makes it extremely easy to bend by hand. Pipe that is easy to bend is easier and less expensive to install, especially in smaller heating networks with tight curves and lots of obstacles such as trees.

Logstor PexFlextra

Logstor PexFlextra products feature a service pipe made of very flexible polyethylene (PEX). This range of products is widely used for small-scale heating projects and for house connections in district heating distribution networks. It permits a maximum continuous operating temperature of 85°C and pressure of 6 bar.

Logstor AluFlextra

Logstor AluFlextra has a service pipe made of aluminium coated with PEX inside and PE on the outside. This composite construction combines the advantages of the smooth plastic surface with the shape retention of a metal pipe. Using AluFlextra pipe runs prevents oxygen and water vapour diffusing into the heating water and the surrounding PUR insulation foam, respectively. The maximum permitted continuous operating parameters are 90°C and 10 bar, respectively

Applications for Flextra Pre-insulated Pipes:

  • Low Temperature Hot Water (LTHW)
  • Domestic Hot and Cold Water
  • Sanitary

The general advantages of Flextra Pipe systems are:

  • Three times as flexible as current FlexPipe products
  • Easy to bend by hand
  • Small bend radius makes it easy to lay pipe on difficult sites and around obstacles
  • Diffusion barrier built into the outer casing
  • New type of insulation foam ensures lambda insulation properties of 0.023 W/mk
  • Coils available in standard lengths of 50 and 100 metres as well as customised pipe lengths
  • Self - compensating design eliminates any need for expansion fittings
  • Includes all couplings, fittings and tools required for easy, rapid installation