5_4 Installing branch fittings.pdf

8/11/2019 5_4 Installing branch fittings.pdf

1/46LOGSTOR A/S Tel. +45 99 66 10 00 Handling and Installation 2009.10

5.4.0.1

Introduction

Contents

Installing branch fittings

Overview

This section contains instructions for the installation of the branch joints and fittings which are

included in standard pipe systems with PE outer casings.

Reinforcement plates 5.4.0.2

Steel joints:

Straight taper lock branch 5.4.1

45 branch fitting 5.4.2

90 branch fitting 5.4.3

Branch saddle 5.4.4

Shrink joints:

SXT, branch joints 5.4.5

T2S, branch joints 5.4.6

Weld joints:

Band joint branches 5.4.7

Prefabricated branches 5.4.8

Branch from concrete duct 5.4.9


2/46



5.4.0.2

Application


Reinforcement plates

In connection with branch fittings it may be necessary to reinforce the main pipe when making

cut outs for branches e.g.:

- when the branch dimension and the main pipe dimension are the same

- when the branch dimension is one or two dimensions smaller than the main pipe dimension

- when the level of axial stress in the main pipe is high

This must appear from the design drawing.

In case of doubt please contact a LOGSTOR technician.

Description LOGSTOR supplies reinforcement plates,

adjusted to all relevant combinations of

main pipe and branch pipe. See Product

Catalogue, page 2.4.2.1.

The reinforcement plate is either one plate

or - when the curvature of the plate exceeds

the center line of the pipe - 2-part.

Welding on the

reinforcement

plate

The purpose of the reinforcement plate is to

reinforce the main pipe.

Never weld it on to the branch pipe.

A full weld is not necessary, but as a mini-

mum fillet welding as shown in the illustration

is required.

t = thickness of the reinforcement plate.

The parts of a 2-part reinforcement plate (a)

must be welded together with each other,

but not necessarily with the pipe.0,3 x d

d

0,3 x d

max. 250

3 x t

a

max. 250

3 x t


4/46Handling and Installation 2009.10 LOGSTOR A/S Tel. +45 99 66 10 00

5.4.0.3


Reinforcement plates

Self-manufacture

of reinforcement

plates

Reinforcement plates can be manufactured

after these measurement and tables, pro-

vided that the stress level is known.

Rectangular plates may be manufactured.

b

d

D

b

s

t

d + 10 mm

= Reinforcement at max. 150 N/mm2

only necessary in these fields b = 50

mm, t = s

= Reinforcement (b = 50 mm, t = s) at

max. 300 N/mm2

= Reinforcement (t > s) at max. 300 N/

mm2

= No reinforcement

Branch

d mm

Main pipe

D x s mm26.

9

33.7

42.

4

48.

3

60.

3

76.

1

88.

9

114.

3

139.7

168.

3

219.

1

26.9 x 2.633.7 x 2.642.4 x 2.648.3 x 2.660.3 x 2.976.1 x 2.988.9 x 3.2

114.3 x 3.6 4.1

139.7 x 3.6 4.1 5.0

168.3 x 4.0 4.6 5.6 6.7

219.1 x 4.5 5.1 6.3 7.6 9.9

273 x 5.0 5.7 7.0 8.4 11.0

323.9 x 5.6 6.4 7.8 9.4 12.3

355.6 x 5.6 6.4 7.8 9.4 12.3

406.4 x 6.3 7.2 8.8 10.6 13.8

457 x 6.3 7.2 8.8 10.6 13.8

508 x 6.37.2 8.8 10.6 13.8

559 x 6.3 7.2 8.8 10.6 13.8

610 x 7.1 9.1 1 1.1 13.5 17.5

t



5.4.1.1

Application

Requirements to

the joint area


Straight taper lock branch

Straight taper lock branches are used in 3

installation cases:

Horizontal/inclined branching from FlexPipesystems.

Horizontal branching from the steel/plastic

system, including TwinPipes.

Vertical branching from the steel/plastic sys-

tem - primarily in connection with venting

points.

Main pipe dimension: 77-315 mm.

Branch dimension: 77-250 mm.

Space, see section 1.2 Excavation, installation.

Preparation for joint installation, see section 5.1.

Tools Use the following tools when installing

straight taper lock branches:

Type: Application:

1. Scissors Sealing strip

2. Hammer (1,5 kg) Taper locks and

plugs

3. Saw Outer casing

4. Scraper Foam remnants

5. Fixing tool Dual plugs

6. Pressure test kit Pressure test

7.Auxiliary tool Pre-installed to facili-

tate installation of

taper locks

1 2 3 4

5 6

7



5.4.1.2



Sealing strip

Removal of foam

from main pipe

Removal of foam

440

440mm

440m

m

Sealing strip is used to seal joint and outer

casing.Sealing strip is available in coils with two

strips on each.

The sealing strip is on paper, enabling

removal of 1 strip at a time.

The sealing strip should always be cut with a

pair of scissors.

To avoid stretching the sealing strip, espe-

cially at high temperatures, it is recommend-

ed always to keep it on the paper, until it is

applied to the joint.

If the sectional area is reduced, the sealing

will be less efficient.

Sealing strips which are deformed, pasted

together or dirty must be discarded.

1. Excavate or support the pipes so that

there is room for the installation.

2. Mark the position of the branch on the

outer casing. It must be 440 mm.

3. Cut and remove the outer casing.(See section 1.3 cutting and adjusting pipes.

4. Remove the insulation material from the

uncovered area.

5. Clean the area carefully with a scraper,

especially around the welding area.

It is important to remove the hard film, left by

the foam.

Pipe dimensions < 139.7 are cleaned longi-

tudinally. Major dimensions are cleaned trans-

versely.



5.4.1.3



Welding on

branch

6. General: Check whether the branch needs

reinforcement or not. (See section 5.4.0.)

a. In connection with FlexPipes, see

Connection to main pipe of the

respective FlexPipe types in the section.

b. In connection with venting and draining

arrangements, see section 8.2.

Application of

sealing strip on

outer casing

30 mm

30 mm

30 mm

7. Apply sealing strip, still on the paper, to

the clean, dry and ground outer casing

ends.

Remove the paper.

The ends of the sealing strip must over-

lap.

Sealing strip,

branch tee cou-pling

50 mm

8. Apply sealing strip (on paper) with 50 mm

extra length at each end.Remove paper.

9. Fold the 50 mm back on the flanges of

the lower half.

Press the sealing strip against the outer

casing where joint and outer casing over-

lap.



Tightening

Pressure testing

Insulation

2

6

4

1

5

3

0,2 bar

10. Press the upper part with foaming holes

down onto the outer casings and install

the taper locks manually.

11. Drive the taper locks into position with a

hammer. This operation must be carried

out in sequence (1, 2, 3, 4, 5, 6), so the

taper locks are evenly tightened.

Pressure test the joint with air prior to

insulation.

It is recommended always to do so.

Insulate the joint immediately after installa-tion or the same day at the latest in order to

eliminate moist from e.g. rain or condensate.

Insulate the joint and insert the venting part

of the dual plugs into the filling holes.

Use a hammer.

See section 7.0 Insulating joints.

5.4.1.4





5.4.2.1

Application


45 branch fitting

45 branch fittings are used for branching

from outer casings in dimensions 90-315

mm.Max. branch dimension: 250 mm.

Requirements to

the joint area

Space, see section 1.2 Excavation, installation.

Preparation for joint installation, see section 5.1.

1 2 3 4

5 6

7 8

9

Tools When installing 45 branch fittings use the

following tools:

Type: Application:


2. Hammer (1.5 kg) Taper locks and

plugs

3. Saw Outer casing


5. Ratchet spanner Tightening bolts

and bolt retainer

(17 mm)

(Alternatively an electric bolt spanner may

be used)


7. Pressure test kit Pressure testing

8. Tongs Compressing flang-

es when installing

bolts on steel fit-

tings

9. Auxiliary tool Fitted prior to instal-

lation to facilitate

mounting taper

locks



5.4.2.2

Sealing strip

Removing insula-

tion from main

pipe

Removing foam


45 branch fitting

440

440mm

440

mm


casing.

Sealing strip is available in coils with twostrips on each.




pair of scissors.






will be less efficient.Sealing strips which are deformed, pasted


1. Excavate or support the pipes, so that




3. Cut and remove the outer casing.

(See section 1.3 cutting and adapting pipes).

4. Remove the insulation from the cut area.

5. Carefully remove all foam remnants, espe-

cially in the welding area.

It is very important that the hard film which

the foam leaves on the steel pipe is removed

very carefully.



versely.



5.4.2.3

Adjusting branch

pipe piece


45 branch fitting

6. The straight part of the branch pipe piece

is shortened by drawing two marks:

L on the inside of the bend, plus actual

insulation thickness, T (and possibly

add x for adjustment to the main pipe).

d is the outside diameter of the branch

pipe piece.

D is measured on the branch pipe

piece of the muff. This compensates for

reducing rings which may be used.

X

T L

d

Max.315

D

L

Rx

T

L

d

D

20

R 40

L mm

25

R 50

L mm

28

R 56

L mm

26.9

R 54

L mm

33.7

R 67

L mm

42.4

R 85

L mm

48.3

R 97

L mm

60.3

R 121

L mm

76.1

R 95

L mm

88.9

R 114

L mm

114.3

R 152

L mm

139.7

R 190

L mm

168.3

R 229

L mm

77 190 195 195

90 190 195 195 195 195

110 195 195 195 200 200 200 200

125 225 225 225 225 230

140 225 225 230 220

160 235 225 225

180 245 245

200 275 275 275

225 300 300

250 315 315 315

Welding on

branch

440 mm

400 mm

220 mm45

7. Weld the branch pipe piece on to the

branch pipe at an angle of 45.

(See section 5.4.0, Reinforcement plates for

branch fittings).

Each dimension of 45 branch pipe pieces is delivered long enough to fit all three insulation

series.

They are shortened prior to insulation according to below instructions, which are enclosed withthe parts delivered on the jobsite.



5.4.2.4

Sealing strip,

main pipe

Sealing strip,branch tee cou-

pling

Sealing strip,

branch pipe


45 branch fitting

30 mm

30 mm

50 mm

30 mm

30 mm


the cleaned, dry and ground outer casing

ends, allowing a slight overlap.

Remove the paper.

9. Apply sealing strip (on paper) with 50 mmextra length at each end to the flange of

the lower part of the branch tee coupling

and to the branch outlet edges.

Remove the paper.

10. Press the lower part in position up

against the outer casing.

Push the sealing strip against the outer

casing where the branch tee coupling

and the pipe overlap.

11. Mate the upper part with the lower part.

12. Fit the taper locks loosely so the branch

tee coupling is still movable when the

branch bend is installed.

13. Place sealing strip (on paper) around the

branch outlet and the outer casing of the

branch pipe, allowing a slight overlap.

Remove the paper.

Branch angle15 15

The branch pipe may deviate up to 15 from

right angle.



5.4.2.5

Tightening

Pressure testing

Insulation


45 branch fitting

0,2 bar

16. Mate the upper part of the branch bend

with the lower part and fit bolts and nutsinto the holes next to the branch tee

coupling.

17. Finger-tighten the nuts crosswise on the

branch bend. Drive the taper locks into

position. Tighten the bolts. See the label

of the branch bend.

18. Check that all four taper locks have

been driven fully home so there is elec-

trical connection between the taper

locks and the branch bend.

19. Install a zinc anode on the end bolt of

the branch bend.

Before insulation the branch bend is pres-

sure tested with air.


Insulate the joint immediately after installa-

tion or the same day at the latest in order to

eliminate moisture e.g. rain or condensate.

Insulate the joint and insert dual plugs in the

venting part of the filling holes.

Possibly use hammer.See section 7.0 Insulating joints.

Sealing strip,

branch bend

50 mm

14. Apply sealing strip along the flange on

the inner side of the bolt holes on the

lower part of the branch bend.

15. Press the lower part up against the outer

casing and outlet.

Push the sealing strip against the outer

casing where the outer casing and outlet

overlap.



Requirements to

the joint area

Room, see section 1.2 Excavation, installation.

Preparations for joint installation, see section 5.1.

5.4.3.1

Application


90 branch fitting

90 branch fittings are used when branching

from outer casing dimensions 90-315 mm.

Max. branch dimension: 250 mm.

1 2 3 4

5 6

7 8

9

Tools When installing 90 branch fittings use the

following tools:

Type: Application:



plugs

3. Saw Outer casing



and bolt retainer

(17 mm)


be used)




es when installingbolts on steel fit-

tings

9. Auxiliary tool Fitted prior to instal-

lation to facilitate

mounting taper

locks



5.4.3.2

Sealing strip

Removing insula-

tion from main

pipe

Removing foam


90 branch fitting

440

440mm

440mm


casing.





pair of scissors.












3. Cut and remove the outer casing.

(See section 1.3 cutting and adapting pipes).

4. Remove the insulation from the cut area.

5. Carefully remove all foam remnants, espe-

cially in the welding area.


the foam leaves on the steel pipe is removed

very carefully.



versely.



5.4.3.3

Adjusting branch

pipe piece


90 branch fitting

220m

m

A

6. Adjust the branch pipe piece to the steel

pipe dimension of the main pipe.

7. Mark the branch pipe piece on the basis

of the A-measurements in the instructions

or the table and cut the branch pipe piece

in this length.

- d is the outside diameter of the branch

pipe piece.

- D is measured on the branch pipe

piece of the joint. This compensates for


d

D

20

R 40

A mm

25

R 50

A mm

28

R 56

A mm

26.9

R 29

A mm

33.7

R 38

A mm

42.4

R 48

A mm

48.3

R 57

A mm

60.3

R 76

A mm

76.1

R 95

A mm

88.9

R 114

A mm

114.3

R 152

A mm

139.7

R 190

A mm

168.3

R 229

A mm

77 50 50 50

90 50 50 50 115 110

110 60 60 60 125 120 110 100

125 140 130 120 110 90

140 150 140 120 100

160 140 120 100

180 140 115

200 150 130 90

225 100 60

250 130 90 50

The straight branch pipe pieces are delivered long enough to fit all three insulation series.

They are shortened prior to insulation according to below instructions, which are enclosed with

the parts delivered on the jobsite.



5.4.3.4

Installing branchtee coupling


90 branch fitting

50 mm

30 mm

30 mm

30 mm


the cleaned, dry and ground outer casing

ends, allowing a slight overlap.

Remove the paper.


all flanges of the inner part of the branch

tee coupling.

Remove the paper.

Always add 50 mm at the ends to be

folded back as shown.

12. Press the inner part in position upagainst the outer casing.

Push the sealing strip against outer cas-

ing where the branch tee coupling and

the pipe overlap.

13. Mate the outer part with the inner part.

14. Fit the taper locks loosely so the branch

tee coupling is still movable when the

branch bend is installed.

Welding on

branch

1

2

3

8. First weld a 90 weld elbow, 1.5 x D, on

to the branch pipe and then to the branch

pipe piece.

9. Then weld the branch on to the main pipe.

(See section 5.4.0, Reinforcement plates at

branch fittings).

Branch angles1 15 15 2

Branch pipe perpendicular to the main pipe

(1) can deviate up to 15 from right angle.

In connection with expansion absorption a

parallel installation is applied (2).

See Design manual.



5.4.3.5

Pressure testing


90 branch fitting

0,2 bar

Before insulation pressure test the joint with

air.


15. Place sealing strip (on paper) around the

branch outlet and the outer casing of the

branch pipe, allowing a slight overlap.

16. Apply sealing strip (on paper) to the

flanges of the branch bend.

Add 50 mm to the ends to be folded

back.

Do not forget possible internal hook, see

below.

17. Place the bend in position and finger-

tighten it, so joint and bend fit together.

18. Finger-tighten the nuts crosswise on the

branch bend. Drive the taper locks intoposition. Tighten the bolts. See the label

of the branch bend.

19. Check that all four taper locks have been

driven fully home so there is electrical

connection between the taper locks and

the branch bend.

20. Install a zinc anode on the end bolt of the

branch bend.

Installing branch

bend

Installing internal

retainer

Branch bends in dimensions 180 - 250

mm are supplied with an internal hook on

one of the halves.

The hook prevents the internal pressure in

the joint during foaming from pushing of the

bend. Fasten the hook to the retainer in the

joint.

Do not tighten too hard, just enough to keep

the hook in place during foaming.



Insulation Insulate the joint immediately after installa-

tion or the same day at the latest in order to

eliminate moisture e.g. rain or condensate.Insulate the joint and insert the venting part

of the dual plugs in the filling holes.

Possibly use hammer.

See section 7.0 Insulating joints.

5.4.3.6


90 branch fitting



5.4.4.1

Application

Requirements to

joint area


Branch saddle

Branch saddles make it possible to make a

branch from 90-315 mm anywhere on a

pipeline with outer casing dimension 355-780 mm.

Room, see section 1.2 Excavation, installation.

Preparations for joint installation, see section 5.1.

1 2 3

4 5 6

78

Tools When installing branch saddle use the follow-

ing tools:

Type: Application:



plugs

3. Jig saw Outer casing



and bolt retainer

(17 mm)


be used)




es when installing

bolts on steel fit-

tings



5.4.4.2

Sealing strip

Mark where to

remove insula-

tion


Branch saddle



2. Mark a circular hole on the outer casing.

The diameter of the circle appears from

the instructions on the label or the table.

Branch pipe:Outer casing Cutout

out. mm diameter mm


casing.





pair of scissors.








90 - 125 340

140 - 225 420

250 - 315 500

3. Remove the outer casing and the insula-

tion with a jig saw.

Carry out the cut with great care to avoid

a notch effect.

If the installation takes place in cold weather,

preheat the outer casing with a soft gas

flame.

Cutting hole



5.4.4.3

Adjusting branch

pipe piece


Branch saddle

A

7. Mark the branch pipe piece on the basis

of the measurements in the instructions

or the table on page 5.4.4.4, and cut the

branch pipe piece in this length.

- d is the outside diameter of the branch

pipe piece.

- D is measured on the branch pipe

piece of the joint. This compensates for


6. Adjust the branch pipe piece to the steel

pipe dimension of the main pipe.

The straight branch pipe pieces are delivered long enough to fit all three insulation series.

They are shortened prior to insulation according to below instructions, which are enclosed with

the parts delivered on the jobsite.

Removing foam 4. Remove the insulation material from the

steel pipe.

5. Clean the steel pipe carefully with a scrap-

er, especially in the weld area.


the foam leaves is removed.



5.4.4.4

Branch angles


Branch saddle

15 15

21

The branch pipe perpendicular to the main

pipe may deviate 15 from this (1).

In connection with expansion absorption

parallel installation (2) is used.

See Design.

Welding on

branch8. First weld a 90 weld elbow on to the

branch pipe and then to the branch pipe

piece.

9. Carefully cover the foam of the main pipe

with wet cloth.

10. Then weld the branch on to the main

pipe.(See section 5.4.0., Reinforcement plates

at branch fittings).

The joint is now ready for the pressure

test.

d

D

20

R 40

A mm

25

R 50

A mm

28

R 56

A mm

26.9

R 29

A mm

33.7

R 38

A mm

42.4

R 48

A mm

48.3

R 57

A mm

60.3

R 76

A mm

76.1

R 95

A mm

88.9

R 114

A mm

114.3

R 152

A mm

139.7

R 190

A mm

168.3

R 229

A mm

219.1

R 305

A mm

90 340 25 25 25 95 85

110 340 35 35 35 105 95 85 75

125 340 115 105 95 85 65

140 420 125 115 95 80

160 420 115 95 75

180 420 115 95

200 420 125 105 65

225 420 75 35

250 500 105 65 30

280 500 65 30

315 500 85 5

Adjusting branch

pipe piece,

continued



5.4.4.5

Installing internal

retainer


Branch saddle

Branch bends in dimensions 180 - 315

mm are supplied with an internal hook on

one of the halves.

The hook prevents the internal pressure in

the saddle during foaming from pushing off

the branch bend.

Fasten the hook to the retainer in the saddle.

Do not tighten too hard, just enough to keep

the hook in place during foaming.

Installing straps

and branch bend 50 mm14. Fit the three straps loosely.15. Apply sealing strip (on paper) to the out-

let of the saddle, around the branch pipe

and on the flanges of the branch bend.

Add 50 mm to the ends on the flanges

to be folded back as shown.

Do not forget a possible internal hook,

see below.

16. Place the bend in position and finger-

tighten, so saddle and branch bend fit

together.

Sealing strip,

main pipe

Sealing strip,

branch teecoupling

15 mm

30 mm

50 mm

11. Apply two lengths of sealing strip (on

paper) to the clean, dry and ground outer

casing around the hole in the main pipe.

Remove the paper.

12. Apply sealing strip (on paper) to the

flanges of the inner saddle part.Add 50 mm at the ends to be folded

back as shown.

13. Place the two parts of the saddle on the

main pipe and tighten the bolts on the

two flanges loosely.


25/46



5.4.5.1

SXT-joint set


SXT, branch joint

SXT branch joints are used to branch from

outer casing dimensions 90-315 mm.

Max. branch dimension: 200 mm.

Tools

1. Cut off approx. 400 mm of the casing pipe

and insulation.

Mind the alarm wires.

Clean the service pipe of excess insulation.

400

Preparations for

branch

Use the following tools when installing SXT branch joints:

Type: Application:

1. Emery cloth Surface activation

2. Gas burner, Surface activation

50 mm Heating patch

Shrinking joint parts

3. Leakage test Leakage test

equipment prior to foaming

4. Hammer Installing wedge

plugs

5. Combination tool 3P

a) Screwdriver Dismounting

venting plugsb) Patch-spoon Heating and placing

patch

c) Patch-press Securing patch

1 2

3

4 5

a b c



5.4.5.2

Welding on the

branch pipe

piece and branch


SXT, branch joint

4. Clean all surfaces in the connection area.

The surface must be CLEAN and DRY.

5. Activate the casing pipes with emery cloth,

grain size 60, at least 220 mm from thecasing ends.

2. Weld the branch pipe piece onto the ser-

vice pipe.

(See section 5.4.0., Reinforcement platesat branch fittings).

3. Place the branch sleeve with packing on

the branch.

Make sure that the branch sleeve and T-

shoe fits correctly, see also label on the

packing.

Weld the branch onto the branch pipe

piece.

Cleaning

Activation



5.4.5.3

Activation,

continued


SXT, branch joint

9. Mount the screws with washers, so they

just emerge through the thread hole.

7. Place a spacer in the middle of the bend

and another in the middle of the straight

run of the branch. Mark the distance L from

the welding onto the branch. see the table

at the end of this section.

To make foaming possible the free pipe

ends generally have to be extended. Mea-

sure 115 mm back from the marking L and

cut off the insulation.

L115

6. Activate the casing pipes with gas burner

at least

220 mm from the casing ends, until

the surface has a matt, silky look.

8. Remove the packing from the T-shoe.

Make sure that it is CLEAN and DRY inside.Pull it over the main pipe. Turn the holes

upside.

Mark the ends of the T-shoe and the direc-

tion of the branch pipe piece on the casing

pipe.

Remove the foil inside the T-shoe from the

flanges. Pull a slip of the circumferential foil

outside the sleeve end.

Installing spacers

Marking joint

position

Installing T-shoe



5.4.5.4

Preparing and

positioning the

flexible branchjoint


SXT, branch joint

10. Remove the packing from the branch sle-

eve and remove the paper from the outer

branch pipe piece.Heat the corrugation at the top and bot-

tom with a gas burner. Do not heat the

smooth ends.

Continue until the corrugation is so flexible

that it can be compressed like a harmo-

nica with the finger tips.

12. Remove the inner foils at the ends.

Shrink the T-shoe by heating the ends,

flanges and collar of the shoe.Note! Heat takes some time to penetrate

plastic and steel/plastic and enter the ma-

stic, which is to be softened.

Heat slowly!

Too hard a flame may result in no or slo-

wer shrinkage.

11. Place the T-shoe according to the marks

and fasten the screws.

Pull the branch sleeve over the branch

pipe piece and place the end in the ope-

ning of the T-shoe. Turn the foam hole

upside.

Place the end of the sleeve exactly at the

mark. Centre the sleeve by placing three

wedges under the end of the sleeve.

13. Remove the wedges and protective foil

inside the branch sleeve.

Shrink the outermost 100 mm of the

sleeve.

Wait until the sleeve has cooled down to

handwarm.

Tighten up the screws.

Shrinking the

branch joint



5.4.5.5

Leakage test


SXT, branch joint

14. Leakage test at 0.2 bar. Check the ends

with a soap solution.

The solution must not get in contact withthe plug areas.

15. Install the venting plugs in two of the ho-

les and foam the sleeve through the thirdhole.

Install the last venting plug.

Wait min. 30 min. for degassing to com-

plete.

Remove the venting plugs by turning and

lifting them.

Remove excess foam or spillage, if any.

1

sec.

216. Activate the whole surface of the reces-

sed area around the holes with emerycloth, grain size 60.

Remove the protective foil from the ex-

pansion plugs and check the mastic. Ac-

tivate briefly the recessed area with a hard

flame.

1

2

30 min.Venting and

foaming

Expansion plugs

17. Mount the expansion plugs in the holes

and press until the mastic is spread evenly

under the collar of the plug.



5.4.5.6

Patch installation


SXT, branch joint

18. Activate the recessed area where the

patch must be placed by grinding it with

abrasive cloth, grain size 60, and remove

grind dust, if any.

Place the patch on a patch-spoon or

other fireproof base, the hotmelt side fa-

cing up.

Heat the hotmelt side until the mastic is

completely melted and begins to bubble.

Activate briefly, 1-2 sec., the recessed

area with a hard flame.

Place the patch over the plug in the

recessed area, the hotmelt side facingdown.

Press it at once hard with the patch-press

for approx. 20 sec. The patch must fit

tightly to the joint in the recessed area.

If the patch does not fit tightly or the colo-

red spots, if any, of the patch do not turn

black, it must be heated again for a short

while with a hard flame and pressed with

the patch-press for approx. 10 sec.

Repeat the process with the other patch.

The joint is complete.

NOTE!

Do not touch the patch, before it has cooled.

20 sec.

18. Centre the wedge plugs in the expansion

plugs and drive them into the plugs with a

hammer until complete stop.

Expansion plugs,

continued



Marking length, series 2

Main pipe

mm

45 branch 90 branch

110 125 140 160 180 110 125 140 160 180

110 300 350

125 295 330 350 340

140 295 325 335 345 335 350

160 300 330 335 350 335 345

180 300 330 335 345 350 345 345 350

225 310 340 345 345 335 350 345 345 350 340

250 310 340 345 345 335 350 345 345 350 340

280 310 340 345 345 335 350 345 345 350 340

Marking length,

series 2

5.4.5.7


SXT, branch joint

Marking length, series 1

Main pipe

mm

45 branch 90 branch

90 110 125 140 160 200 90 110 125 140 160 200

90 360 360

110 355 315 355 335

125 335 310 335 335 335 335

140 335 310 330 340 335 330 335 330

160 335 310 330 335 335 335 335 340

200 335 315 330 335 345 335 340 340 335 340

225 335 315 330 330 345 330 335 340 340 340 340 350

250 335 315 330 330 345 330 335 340 340 340 340 350

315 335 320 335 335 345 330 335 340 340 340 340 350

Marking length,

series 1



5.4.6.1

Application


T2S, double sealed branch joint

T2S branch joint is used to branch primarily

to FlexPipes from outer casing dimensions

110-315 mm.

Max. branch dimension 125 mm.

1. Cut off approx. 300 mm of casing pipe and

insulation.

Be careful with any integrated alarm wires.

Clean the service pipe of any insulation

remnants.

300

Preparing branch

Tools Use the following tools when installing T2S branch joints:

Type: Application:

1. Emery cloth Surface activation

2. Gas burner, Surface activation.

50 mm Shrinking joint.

3. Roller Sealing longitudinal

overlap

4. Drill Venting and filling

holes

5. Hammer Installing wedge

plugs

1 2 3

4 5



4. Shorten the insulation shells to make them

fit tightly between the casing pipes.

Make a gap min. 15 mm around the branchpipe piece.

15

5.4.6.2

Installing branch

pipe piece and

branch



5. Clean all surfaces in the jointing area.

2. Weld the branch pipe piece onto the main

pipe.

If there is a hot tapping valve on the pipe,the spindle must be parallel with the main

pipe.

(See section 5.4.0., Reinforcement plates

at branch fittings).

3. Place the collar and T-shoe on the branch.

Install the branch pipe piece on the branch

pipe. Cover the joint, if it is not installed at

once.

Installing insula-

tion shells

Cleaning and

activation



5.4.6.3

Cleaning and

activation,

continued



90

45

9. Place the spacers so their beveled ends

face the branch in order to facilitate the in-stallation of the flexible branch bend.

Push a spacer against the shrink film until

stop, and secure it with strips.

Two of the spacer wings must be parallel

with the direction of the branch.

At 45: Place the two other spacers on the

middle of the bend and behind the weld on

the branch pipe respectively.

At 90: Place the foam block on the inside of

the bend, so it rests on the spacer. Secure it

with strips. Cut off the strip ends.

7. Activate the casing pipes on the main pipe

with gas burner at least 150 mm from both

pipe ends, until the surface has a matt,

silky look.

150

6. Activate the casing pipes on the main pipe

with emery cloth grain size 60 at least 150

mm from both pipe ends.

8. Place the shrink film with the hole around

the branch.

Remove the paper while pulling the film intoposition.

Turn the film to allow closure at the top.

Shrink the film from the centre towards

both ends.

Installing shrink

film

Installing spacers



5.4.6.4

Activation



13. Hold the shoe down, until the branch has

cooled.

Pull the paper off the self-adhesive part on

the back of the closure patch and fix it.Heat the closure patch, until the structure

of the reinforcement becomes visible on

the top side.

Press down the closure patch, until it is

fixed.

10. Activate the casing pipe with abrasive

cloth grain 60 at least 150 mm on the

branch.

11. Activate the casing pipe with gas burner

at least 150 mm on the branch.

Remove the foil inside the T-shoe.

12. Heat the corrugation and T-shoe (80-

100C).

Check that the foil inside the T-shoe has

been removed.

Unfold the T-shoe and pull it down over

the branch.

Turn the T-shoe around while pulling it

down over the main pipe.

Preheating and

placing T-shoe



14. Shrink the T-shoe from the centre towards

both ends.

Do not overheat the branch during shrin-king. The flame must point downwards,

when heating around the branch.

15. Shrink the shrinkable end on to the

branch.

Start with the underside.

17. Centre the closure patch right above

the wrap seam with the hotmelt facing

downwards.

The hotmelt side has a visible reinforce-

ment.

Heat the closure patch until the structure

of reinforcement becomes visible on the

topside.

Press down the closure patch, until is is

fixed.

16. Place the shrink wrap around the main

pipe.

If possible, place the patch opposite thepatch on the shoe.

5.4.6.5

Shrinking T-shoe



Placing shrink

wrap



5.4.6.6

Shrinking the

wrap



18. Shrink the wrap from the centre towards

both ends, ensuring that the mastic be-

comes visible at both ends and the fullshrinking effect has been utilised.

20. Drill a 25 mm hole, using drill with bit

stop.

Distance from the edge of the reduction:

- Branch pipe 90 mm: 40 mm

- Branch pipe 125 mm: 80 mm

21. Foam the T-shoe.

Install the air vent plug.

Wait min. 30 min. for degassing.

Remove the venting plug by turning andlifting it.

Remove excess foam or spillage, if any.

19. Roll or press along the overlapping edge,

ensuring that any tunnel is sealed with

mastic.

Venting and

foaming branch



5.4.6.7

Expansion plugs



25. Activate the T-shoe on the branch and

min 200 mm along the casing.Remove packing and paper from the col-

lar.

Check that all paper has been removed.

Shrink the collar so its middle is over the

T-shoe end.

22. Remove the protective foil from the ex-

pansion plug and and check the mastic.

Activate briefly the area around the holewith a hard flame.

24. Centre the wedge plug in the expansion

plug and drive it completely into the plug

with a hammer.

1

1-2 sec.

2

23. Mount the expansion plug in the hole and

press until the mastic is spread evenly un-

der the collar of the plug.

Wedge plugs

Shrinking collar



5.4.6.8



Completed joint 25. The joint is complete.



5.4.7.1

Application

Distance between

branching points

Placing parallel

branch


Band joint branch

220 mm

150mm

min. 1100 mm

220

mm

min.

400

mm

440 mm

90

45

90

The band joint branch is used is used to

branch from main pipe 90-315 mm to:

- FlexPipes 77-140 mm

- Straight pipes 90-140 mm

It can be carried out as 45 and 90 per-

pendicular branches as well as 90 parallel

branches.

Observe the shown distance measurements

in order to ensure optimum space for theinstallation of the preinstalled branch band

joint.

A mm:

- D 315 = 340

- D 450 = 380

Place a 90 parallel branch in a 45 angle in

relation to vertical.

Partly to ensure optimum positioning of the

supporting depth guard, partly to ensure

minimum height of the pipe system.

Branch pipes, flexible and straight pipesrespectively.

Shorteningmeasurements,

branch pipes



5.4.7.2

Adjusting branch

pipe pieces


Band joint branch

x

T

L

d

L

R

45

d

R

L

90

A

A

A

X

T L

Each branch pipe piece is delivered long enough to fit all three insulation series.

They are shortened prior to insulation in accordance with below instructions.

Shorten the straight part by marking two measurements:

- L on the inside of the bend

- T for the actual insulation thickness of the main pipe

(Possibly with the addition of x for adjustment of the main pipe)

d, mm

20

R125

L mm

25

R125

L mm

28

R160

L mm

26.9

R140

L mm

33.7

R140

L mm

42.4

R140

L mm

48.3

R140

L mm

60.3

R150

L mm

76.1

R190

L mm

45 310 310 320 300 295 295 290 390 385

90 275 275 300 250 245 240 235 310 315

Installation equip-

ment

Control of the

welding process

Use a LOGSTOR trailer containing generator,

compressor, welding machine, straps and all

necesssary tools for the installation work.

Carry out the welding process with a compu-

ter controlled welding machine which auto-

matically controls the welding and checks

that the welding temperature and the pres-

sure between the welding surfaces are cor-

rect.

(See also section 5.4.0., Reinforcement plates at branch fittings).



5.4.7.3


Band joint branch

Fitters The installation is carried out by certified fitters who have been specially educated and trained

at LOGSTOR. An education and training which are kept up by follow-up courses at least every

second year.

Installation

instructions

The certified fitters must use the authorized installation equipment and follow the instructions

in the Trailer Manual, which can be ordered at LOGSTOR.

Other branch

band jointsPerpendicular band joint branch for venting/

draining or as a reference point for the sur-

veillance system

Main pipe, 125-800 mmBranch, 110-225 mm

Straight band joint branch (Twin - Twin).

Main pipe (outer casing):

125 - 630 mm

Branch (outer casing):

90 - 225 mm

Straight branch with branch band joint

(Twin - single pipe):

Main pipe (outer casing):

125 - 630 mm

Branch (outer casing): 77 - 110 mm



5.4.8.1

Application

Installation

instructions


Prefabricated branch

Use preinsulated T-pieces when the branch

fittings systems cannot be used for dimen-

sional limiting reasons.

Especially in connection with under-crossing

branch pipes they are advantageous to use

as there is no foaming problem.

Weld prefabricated branches like normal pre-

fabricated pieces of pipe.They are always delivered with 3 embed-

ded alarm wires. The middle wire, i.e. the

tinned one, has connection to the connecting

branch.

The two through-going wires are blank

copper wires.

Regarding connection of alarm wires, see the

alarm drawing.



5.4.9.1

Application

Branch with

outer casing

dimensions 90-

140 mm

Branch with

outer casing

dimensions >

140 mm


Branching from concrete duct

750

M

1-2 min.

1. Make a hole in the concrete wall of

approx. 750 mm where the branch will be

established.

Prior to installation, the duct is extended.

See section 4.4 Design, Branching from

concrete duct and section 10.1 Installing

sealing ring as well as 10.3 Installing end-

cap.

2. Pull the shrink sleeve and branch adaptor

in over the branch pipe.

3. Adjust the height and length of the two

branch pipes.

4. Shrink end-caps on. See section 10.3.1

Installation of end-cap

5. Weld the branch on to the main pipe

6. Pull the branch adaptor into position flush

with the concrete wall.

It is very important to pay attention to the

temperature conditions and the positionof anchors to ensure that the branch can

expand.

7. Pull the shrink sleeve over the end of the

branch adaptor and shrink the sleeve.

Wait 1-2 minutes before shrinking on the

outer casing.

Now the installation is complete and the con-crete wall can be repaired.

When branches are made with pipes from a concrete duct, a branch adaptor is used to

ensure a watertight entry into the duct and to allow the main pipe to expand with the branch.


46/46

5.4.9.2

Branching with

FlexPipe


Branching from concrete duct

1. Pull the shrink sleeve and the branch

adaptor in over the branch pipe.

2. Adjust the 90 bend (200 x 300 mm) to

fit horizontally and vertically in the installa-

tion. Cut the bend at right angles using a

hacksaw with small saw teeth.

3. Weld the adjusted bend and the welding

stub together.

4. Weld the bend pipe on to the reduction

piece. See section 12 FlexPipes.

5. Shrink the end-cap on the FlexPipe end.

(See section 10.3 Installing end-cap).

6. Shrink the shrink tubing around the

reduction piece and the free end of the

FlexPipe.

7. Pull the shrink tubing on to the FlexPipe,

while it is still warm.

8. Weld the branch on to the main pipe.

9. Pull the branch adaptor in position flush

with the concrete wall.

It is very important to pay attention to the

temperature conditions and the position of

the anchors to ensure that the branch canexpand.

10. Pull the shrink sleeve in over the branch

adaptor end and shrink the sleeve.

Wait 1-2 minutes before shrinking the outer

casing.

The installation is now complete and the

concrete wall can be repaired.

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