FSR

Project planning

4.320

FLEXWELL® Safety Pipe

Basic planning parameters

General informatio

n

In contrast to conventional piping, FLEXWELL® Safety Pipe is a

flexible pipe system. It is manufactured in our works in endles

s

lengths and wound onto cable drums. Due to its flexibility

FLEXWELL® Safety Pipe can be laid in one piece over long

stretches of the routing without any need for moulded parts

.

Installation work to assemble and fit pipe connections and to

insulate the piping on site is only necessary at the ends of the

pipe sections.

Delivery lengths

Type

DN

Delivery lengths

on a drum

as a coi

l

m

m

FSR 13/ 25

12

500

500

FSR 30/ 48

25

750

525

FSR 39/ 60

32

650

415

FSR 48/ 71

40

550

255

FSR 60/ 83

50

500

200

FSR 75/107

65

400

125

FSR 98/134

80

400

9

0

FSR 127/175

100

350

5

0

FSR 200/262

150

250

–

Longer pipe lengths are connected on site with monitorable

through-connections.

Expansion takeup

Longitudinal expansion as a result of thermal influences i

s

compensated in FLEXWELL® Safety Pipe rather like an

expansion joint by the geometrical change in the corruga

-

tion of the pipes. That is why no action needs to be taken to

compensate for expansion when using FLEXWELL® Safet

y

Pipes. Expansion bends such as those needed on conventiona

l

piping can be dispensed with.

Anchor points

Anchor points are not necessary when the pipe is laid under-

ground. In this case, the routing can be chosen completely

freely and causes no extra work. Increase in the volume of

fluids due to thermal in

fluences and concomitant pressur

e

increases can be compensated to a limited extent in surfac

e

laying

.

Safety precautions

The following technical principles apply to FLEXWELL® Safety

Pipe, and correspond to best engineering practice

:

-

Piping must be equipped with all devices needed for saf

e

operations.

-

Piping must be secured against exceeding the permissibl

e

pressures where it is cannot be excluded that such pres-

sures may be exceeded

.

-

The safety equipment to prevent exceeding of permissibl

e

pressure must be installed in an appropriate position

.

-

For instance, spill valves are a suitable means of preventin

g

pressure increases exceeding the permissible level as a

result of temperature increases in flammable fluids e.g. due

to exposure to sunshine.

-

Unenclosed piping must be tightly sealed against fluid loss.

-

Surface routed piping which is directly exposed to the sun

must be shielded from sunshine using appropriate means.

Screws and seals

Screws and seals are not included in the scope of delivery

.

IMPORTANT! Only use steel screws of strength class 4.6, 5.6

or 8.8. Screws of strength class ≥ 10.9 may not be used.

When stainless steel screws are used, the area underneath th

e

heads and on the thread must be lubricated with copper paste.

This is absolutely necessary for the friction coefficient and

maximum tightening torque. Only stainless steel screws with

maximum strength class A 70 may be used

.

Installation instruction for split loose flange

The splitting of the loose flange needs to be installe

d

staggered 90° in reverse order

.

04.05.2022 Subject to technical changes. Page 12