FSR

Technical details

4.100

FLEXWELL® Safety Pipe

System descriptio

n

Construction and functio

n

The FLEXWELL® Safety Pipe is a

:

-

double-walled, monitorable, flexible and factory produce

d

pipe system with all necessary quality tests

-

approved for the transport of water-hazardous, flammabl

e

or otherwise dangerous fluid

s

-

recognized and approved leak detection syste

m

- Dimensions:

DN 12 – DN 150

- Pressure range:

25 bar, PN 2

5

- Temperature range:

–10 °C and +50 °

C

- DIBt Approval Number:

Z – 38.4 - 253

Leak monitorin

g

The surveillance space between the inner and outer pipe ena

-

bles permanent leak monitoring using approved leak detectio

n

devices operating either on the positive pressure or vacuum

principle. The use of these systems is compliant with the high-

est European safety standards. The system is constructed with

safety in mind and will detect any leak above or below the flui

d

level within a double-walled protective system.

Legal basi

s

Many laws, standards and regulations determine the require

-

ments for leak detection systems and their use. Here are just

a

few of the principal ones

:

-

European Standardisation of Leak Detection Systems

(DIN EN 13160, DGRL 97/23/EG)

- Environmental legislation and requirements for water safet

y

(DIN EN 13480, WHG § 62)

- Fulfillment the requirements for fire and explosion

prevention for hydrological engineering and construction

of buildings (TRbF 50, MLAR)

Quality, process, pressure and material tests are carried out as par

t

of the approval procedure by external technical inspection agencie

s

as well as our internal quality assurance departmen

t

08.12.2020 Subject to technical changes. Page 4

5

1 2 3 4

Construction of the

FLEXWELL® Safety Pipe:

1 corrugated inner pipe (1.4404/1.4571)

2 surveillance space

3 corrugated outer pipe (1.4301)

4 Corrosion proofing (PE casing)

5 Connecting fitting

Laying and installation

- fast, simple laying in continuous lengths directly from drum/

coil into trench or in building

- underground and above ground

- changes of direction are compensated by the flexible pipe

system

- acceptance test after completion of laying and installation

by means of a function test of the leak monitoring system.

- All connecting fittings and double-walled flanged moulded

fittings are mounted either on the surface or in manholes

and canal ducts

- All non-detachable double-walled moulded fittings

(integrated elements) in a pipe can also be laid undergroun

d

- laying and installation is done only by trained and

accredited specialist firms (acc. to WHG or VAUwS)

- optional technical support by BRUGG intallation and service

staff

The Advantages of the system

- double-walled, monitorable, flexible pipe system

- delivery in lengths up to 1000 m

- short construction periods, fast laying

- flameless (non-weld) connecting fitting

- no moulded fittings/welded connections along the pip

e

route

- optionally, BRUGG can provide the entire range of installa-

tion and support services

- approved system Z – 38.4 - 253

- for highly aggressive substances other materials can be

applied on a project basis (e.g.1.4539)