Rubber Expansion Joints - Series S10
Rubber expansion Joints are fl exible unions for
pipes and rigid systems whose main purpose
is no other than protect equipment, avoiding
rigid systems and pipe work rupture by thermal
expansion and contraction, to absorb vibratio-
ns and noise generated by pressure pumping
stations and also to assist with pipe alignment
and being used as dismantling joints. They are
consisting of synthetic rubber convolution fi tted
with metallic connectors at their ends, being
fl anges or threaded unions and are designed
to perform axial movements and lateral and an-
gular defl ections.
Designed and manufactured in accordance with good Engineering Sound Practice (ESP)* Patterns available for diverse convolution shape – single and double
sphere – with sizes from DN 32 up to DN 1200* Rating: PN16 (up to DN300); PN10 (DN350-600); PN7 (DN650-1200) * MAWT: depending on rubber grade <EPDM:
-10ºC..+110ºC; NBR: -10ºC…+90ºC; HYPALON: -10ºC…+90ºC>* Bursting pressure: 60 barg up to DN 200 and 40 bar on larger sizes* Flanges drilled to EN 1092-1
EN 1092-1 PN10, PN16 or ANSI150 – loose fl at fl anges * Testing Standard: EN 12266-1 * Marking Standard: EN 19 * PED 97/23/CE (Art.1.3 – 15) – Excluded from
CE marking.
For Vacuum application please consult us.
Main Parts and Materials
Main Valve Dimensions (mm)
1- Vulcanised Rubber Bellow: 1.1 Rubber core (inner)
1.2 Nylon tire cord
1.3 Rubber cover (outer)
1.4 Hard Steel Wire
Rubber options: EPDM, NBR, Hypalon, Neoprene, Viton, Butyl Rubber, Natural Rubber
2- Loose Flanges:
Standard Material: Carbon Steel Zinc Plated S235JR to EN10025 (St 37-2 to DIN 17100)
Flange Options: Stainless Steel , Galvanised Steel, Vacuum Rings, Limit Rods, etc.
DN BUILDING LENGTH (mm) MAX. MOVEMENTS ALLOWED FROM INITIAL POSITION*
ФA
(mm)
ФC
Inch mm
(mm)
INITIAL
(L)
TOLERANCE
INSTALLED
(min-max)
AXIAL
COMPRESSION
(mm)
AXIAL
EXPANSION
(mm)
LATERAL
DEFLECTION
(mm)
ANGULAR
DEFLECTION
1.1/4” 32 95 89-97 8 4 8 15º 68 35
1.1/2” 40 95 89-97 8 5 8 15º 68 37
2” 50 105 99-107 8 6 8 15º 86 50
2.1/2” 65 115 107-118 12 6 10 15º 106 65
3” 80 130 122-133 12 10 10 15º 118 72
4” 100 135 122-138 18 10 12 15º 152 98
5” 125 170 156-173 18 10 12 15º 182 122
6” 150 180 167-183 18 10 12 15º 213 146
8” 200 205 186-208 25 14 22 15º 262 194
10” 250 240 221-243 25 14 22 15º 323 245
12” 300 260 241-263 25 14 22 15º 372 295
14” 350 265 246-268 25 14 22 15º 409 320
16” 400 265 246-268 25 14 22 15º 471 365
18” 450 265 246-268 25 14 22 15º 520 420
20” 500 265 246-268 25 14 22 15º 572 480
24” 600 265 246-268 25 14 22 15º 690 585
* The stated movements are solely valid with the joint subject to a single movement direction. Values are proportionally reduced along with the movement combination.
* Increasing temperatures reduce the permissible movements capacity and number of cycles.
Spherical design for better strength
and effi ciency
Light and easy to install, little installation
space required, easy maintenance of re-
placeable bellows
Precision injection moulded of
synthetic rubber and nylon
Outer layer protects the bellows
surface form eventual ozone
attack, strikes and other envi-
ronmental aggressions
Different allowable movements: axial
compression and expansion, lateral
and angular defl ection
Loose fl anges for easy assembly, spe-
cially machined to accept the full tur-
ned rubber, with standard execution in
zinc plated steel
Full turned rubber design, self-sealing,
no additional gaskets are required; it
prevents electrolytic corrosion
Lot number punched for
full traceability purpose
Rugged design with high burst pressu-
re, to absorb noise and vibration and
withstand water hammers to a certain
extent by:
- Inner Reinforcement placed in bet-
ween the outer and inner layers. Made
of Nylon braided fabrics as standard,
which provide high shell moulding re-
sistance.
-End Bellows Reinforcement. Harde-
ned steel wires to provide a greater
consistence to the bellows outer neck
Rubber material
identifi cation and
maximum service
temperature
Nominal dimensions subject to manufacturing tolerance
Series S10
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: toraflex@interflex.co.uk
Distributor :
TORAFLEX
Rubber Expansion Joints - Series S15
Main Valve Dimensions (mm)
DN BUILDING LENGTH (mm) MAX. MOVEMENTS ALLOWED FROM INITIAL POSITION*
ФA
(mm)
ФC
Inch mm
(mm)
INITIAL
(L)
TOLERANCE
INSTALLED
(min-max)
AXIAL
COMPRESSION
(mm)
AXIAL
EXPANSION
(mm)
LATERAL
DEFLECTION
(mm)
ANGULAR
DEFLECTION
1” 25 130 122-133 30 20 30 35º 60 25
1.1/4” 32 130 122-133 30 20 30 35º 68 35
1.1/2” 40 130 122-133 30 20 30 35º 68 37
2” 50 130 122-133 30 20 30 35º 86 50
2.1/2” 65 130 122-133 30 20 30 30º 106 65
3” 80 130 122-133 30 20 30 30º 118 72
4” 100 130 122-133 30 20 30 25º 152 98
5” 125 130 122-133 30 20 30 25º 182 122
6” 150 130 122-133 30 20 30 15º 213 146
8” 200 130 122-133 30 20 30 15º 262 194
10” 250 130 122-133 30 20 30 10º 323 245
12” 300 130 122-133 30 20 30 10º 372 295
* The stated movements are solely valid with the joint subject to a single movement direction. Values are proportionally reduced along with the movement combination.
* Increasing temperatures reduce the permissible movements capacity and number of cycles.
Rubber expansion Joints are fl exible unions for
pipes and rigid systems whose main purpose
is no other than protect equipment, avoiding
rigid systems and pipe work rupture by thermal
expansion and contraction, to absorb vibratio-
ns and noise generated by pressure pumping
stations and also to assist with pipe alignment
and being used as dismantling joints. They are
consisting of synthetic rubber convolution fi tted
with metallic connectors at their ends, being
fl anges or threaded unions and are designed
to perform axial movements and lateral and an-
gular defl ections.
Designed and manufactured in accordance with good Engineering Sound Practice (ESP)* Patterns available for diverse convolution shape – single and double
sphere – with sizes from DN 32 up to DN 1200* Rating: PN16 * MAWT: depending on rubber grade <EPDM: -10ºC..+110ºC; NBR: -10ºC…+90ºC;
HYPALON: -10ºC…+90ºC>* Bursting pressure: 60 barg up to DN 200 and 40 bar on larger sizes* Flanges drilled to EN 1092-1 PN 10, PN 16 or ANSI 150 – loose
fl at fl anges * Testing Standard: EN 12266-1 * Marking Standard: EN 19 * PED 97/23/CE (Art.1.3 – 15) – Excluded from CE marking.
For Vacuum application please consult us.
Main Parts and Materials
1- Vulcanised Rubber Bellow: 1.1 Rubber core (inner)
1.2 Nylon tire cord
1.3 Rubber cover (outer)
1.4 Hard Steel Wire
Rubber options: EPDM, NBR, Hypalon, Neoprene, Viton, Butyl Rubber, Natural Rubber
2- Loose Flanges:
Standard Material: Carbon Steel Zinc Plated S235JR to EN10025 (St 37-2 to DIN 17100)
Flange Options: Stainless Steel, Galvanised STeel, Vacuum Rings, Limit Rods, etc.
Spherical design for better strength
and effi ciency
Light and easy to install, little installation
space required, easy maintenance of re-
placeable bellows
Precision injection moulded of
synthetic rubber and nylon
Outer layer protects the bellows
surface form eventual ozone
attack, strikes and other envi-
ronmental aggressions
Different allowable movements: axial
compression and expansion, lateral
and angular defl ection
Loose fl anges for easy assembly, spe-
cially machined to accept the full tur-
ned rubber, with standard execution in
zinc plated steel
Full turned rubber design, self-sealing,
no additional gaskets are required; it
prevents electrolytic corrosion
Lot number punched for
full traceability purpose
Rugged design with high burst pressu-
re, to absorb noise and vibration and
withstand water hammers to a certain
extent by:
- Inner Reinforcement placed in bet-
ween the outer and inner layers. Made
of Nylon braided fabrics as standard,
which provide high shell moulding re-
sistance.
-End Bellows Reinforcement. Harde-
ned steel wires to provide a greater
consistence to the bellows outer neck
Rubber material
identifi cation and
maximum service
temperature
Nominal dimensions subject to manufacturing tolerance
Series S15
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: toraflex@interflex.co.uk
Distributor :
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
TORAFLEX
Rubber Expansion Joints - Series S30
Rubber expansion Joints are fl exible
unions for pipes and rigid systems who-
se main purpose is no other tan protect
equipment, avoiding rigid systems and
pipe work rupture by thermal expansion
and contraction, to absorb vibrations and
noise generated by pressure pumping
stations and also to assist with pipe alig-
nment and being used as dismantling
joints. They are consisting of synthetic
rubber convolution fi tted with metallic
connectors at their ends, being threaded
unions and are designed to perform axial
movements and lateral and angular de-
fl ections. The threaded unions are spe-
cially used on OEM equipment.
Designed and manufactured in accordance with good Engineering Sound Practice (ESP)* Patterns available for double sphere – with sizes from
DN 20 up to DN 80* Rating: PN 16* MAWT: depending on rubber grade <EPDM: -10ºC..+110ºC; NBR: -10ºC…+90ºC;
HYPALON: -10ºC…+90ºC>* Bursting pressure: 30 barg *End Connections by threaded ends to BSPP * Testing Standard: EN 12266-1 *
Marking Standard: EN 19 * PED 97/23/CE – Paragraph 3 (Art.1.3 – 15) – Excluded from CE marking.
For Pressure > 10 bar and/or Temperature > 50ºC root ring must be used (Please consult us).
For Vacuum application please consult us.
Main Parts and Materials
Main Valve Dimensions (mm)
* The stated movements are solely valid with the joint subject to a single movement direction. Values are proportionally reduced along with the movement combination.
* Increasing temperatures reduce the permissible movements capacity and number of cycles.
1- Vulcanised Rubber Bellow: 1.1 Rubber core (inner)
1.2 Nylon tire cord
1.3 Rubber cover (outer)
Rubber options: EPDM, NBR, Hypalon, Neoprene, Viton, Natural Rubber, Butyl Rubber
2- Unions with threaded ends:
Standard Material: Malleable Iron Zinc Plated EN-GJMB-350-10 according to EN1562
(old GTS 35-10 according to DIN 1692)
DN BUILDING LENGTH (mm) MAX. MOVEMENTS ALLOWED FROM INITIAL POSITION*
ФC
Inch mm
(mm)
INITIAL
(L)
TOLERANCE
INSTALLED
(min-max)
AXIAL
COMPRESSION
(mm)
AXIAL
EXPANSION
(mm)
LATERAL
DEFLECTION
(mm)
ANGULAR
DEFLECTION
¾” 20 200 194-203 22 6 22 45º 17
1” 25 200 194-203 22 6 22 45º 25
1.1/4” 32 200 194-203 22 6 22 45º 32
1.1/2” 40 200 194-203 22 6 22 45º 39
2” 50 200 194-203 22 6 22 45º 47
2.1/2” 65 240 234-243 22 6 22 45º 60
3” 80 240 234-243 22 6 22 45º 70
Double Sphere design for better strength and effi ciency allow
greater axial, lateral and angular movements subject to less
effort and material wearing down during movements.
Light and easy
to install, little
installation spa-
ce required
Precision injection moulded of
synthetic rubber inserted into
union threads
Outer layer protects
the bellows surface
form eventual ozone
attack, strikes and
other environmental
aggressions
Lot number
punched for
full traceability
purpose
Rubber material
identifi cation and
maximum service
temperature
Nominal dimensions subject to manufacturing tolerance
Series S30
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: toraflex@interflex.co.uk
Distributor :
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
TORAFLEX
Rubber Expansion Joints - Series S20
Main Parts and Materials
Main Valve Dimensions (mm)
1- Vulcanised Rubber Bellow: 1.1 Rubber core (inner)
1.2 Nylon tire cord
1.3 Rubber cover (outer)
1.4 Hard Steel Wire
Rubber options: EPDM, NBR, Hypalon, Neoprene, Viton, Butyl Rubber, Natural Rubber
2- Loose Flanges:
Standard Material: Carbon Steel Zinc Plated S235JR to EN10025 (St 37-2 to DIN 17100)
Flange Options: Stainless Steel, Galvanised Steel, Vacuum Rings, Limit Rods, etc.
* The stated movements are solely valid with the joint subject to a single movement direction. Values are proportionally reduced along with the movement combination.
* Increasing temperatures reduce the permissible movements capacity and number of cycles.
DN BUILDING LENGTH (mm) MAX. MOVEMENTS ALLOWED
FROM INITIAL POSITION*
ФA
(mm)
ФC
(mm)
Inch mm
INITIAL
(L)
Tolerance
Installed
(min-max)
Axial
Compression
(mm)
Axial
Expansion
(mm)
Lateral
Defl ection
(mm)
Angular
Defl ection
1.1/4” 32 175 168-178 50 30 35 40º 68 35
1.1/2” 40 175 168-178 50 30 35 40º 68 37
2” 50 175 168-178 50 30 35 40º 86 50
2.1/2” 65 175 168-178 50 30 35 40º 106 65
3” 80 175 168-178 50 30 35 40º 118 77
4” 100 225 218-228 57 35 40 35º 152 98
5” 125 225 218-228 57 35 40 35º 182 122
6” 150 225 218-228 57 35 40 35º 213 146
8” 200 325 318-328 63 35 45 30º 262 194
10” 250 325 318-328 63 35 45 30º 323 245
12” 300 325 318-328 63 35 45 30º 372 295
14” 350 350 344-353 40 30 30 20º 410 330
16” 400 350 344-353 40 30 30 20º 473 380
18” 450 350 344-353 40 30 30 20º 522 428
20” 500 350 344-353 40 30 30 20º 570 476
24” 600 350 344-353 40 30 30 20º 690 596
Double sphere design allow greater axial, lateral and angular movements
subject to less effort and material wearing down during movements
Light and easy to install, little installation
space required, easy maintenance of re-
placeable bellows
Precision injection moulded of
synthetic rubber and nylon
Outer layer protects the bellows
surface form eventual ozone
attack, strikes and other envi-
ronmental aggressions
Different allowable movements: axial
compression and expansion, lateral
and angular defl ection
Loose fl anges for easy assembly, spe-
cially machined to accept the full tur-
ned rubber, with standard execution in
zinc plated steel
Full turned rubber design, self-sealing,
no additional gaskets are required; it
prevents electrolytic corrosion
Lot number punched for
full traceability purpose
Rugged design with high burst pressu-
re, to absorb noise and vibration and
withstand water hammers to a certain
extent by:
- Inner Reinforcement placed in bet-
ween the outer and inner layers. Made
of Nylon braided fabrics as standard,
which provide high shell moulding re-
sistance.
-End Bellows Reinforcement. Harde-
ned steel wires to provide a greater
consistence to the bellows outer neck
Rubber material
identifi cation and
maximum service
temperature
Rubber expansion Joints are fl exible
unions for pipes and rigid systems who-
se main purpose is no other tan protect
equipment, avoiding rigid systems and
pipe work rupture by thermal expansion
and contraction, to absorb vibrations
and noise generated by pressure pum-
ping stations and also to assist with
pipe alignment and being used as dis-
mantling joints. They are consisting of
synthetic rubber convolution fi tted with
metallic connectors at their ends, being
fl anges or threaded unions and are de-
signed to perform axial movements and
lateral and angular defl ections.
Designed and manufactured in accordance with good Engineering Sound Practice (ESP)* Patterns available for diverse convolution shape – single and double
sphere – with sizes from DN 32 up to DN 1200* Rating: PN16 (DN32-200), PN16 (DN250-300 with root ring), PN10 (DN250-300 without root ring), PN10 (DN350-
600) * MAWT: depending on rubber grade <EPDM: -10ºC..+110ºC; NBR: -10ºC…+90ºC; HYPALON: -10ºC…+90ºC>* Bursting pressure: 60 barg up to DN 200 and
40 bar on larger sizes* Flanges drilled to EN1092-1 PN 10, PN 16 or ANSI 150 – loose fl at fl anges * Testing Standard: EN12266-1 * Marking Standard: EN19 * PED
97/23/CE (Art.1.3 – 15) – Excluded from CE marking.
For Vacuum application please consult us.
Nominal dimensions subject to manufacturing tolerance
Series S20
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: toraflex@interflex.co.uk
Distributor :
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
TORAFLEX
Metallic Expansion Compensators - Series S25 / S50
Main Parts and Materials
Main Valve Dimensions (mm)
Metal Compensators are fl exible unions
used on rigid pipe work systems to ab-
sorb axial thermal movements, noise
and pipe alignment and are featured by
a signifi cantly larger temperature resis-
tance as well as a more permissibility to
pressure compared to rubber expansion
joints. S25 and S50 compensators are
serial manufactured products offering a
standard performance to the election of
the contractor in line with the philosophy
of an off the shelf delivery at a quite eco-
nomic cost. Should other compensators
to match with other lengths and working
pressures are required; our Technical
Offi ce would be pleased to help on re-
quest.
Manufacturing Design according to EJMA -1998 / 7TH edition * Compliant with PED 97/23/CE – 1st Category, fl uids Group nº 2 (toxic, fl ammable
or Oxide fl uids excluded)* Design Pressure: S50: (PN 16 DN 32-DN 300), S25: (PN 10 all size range)* Design Temperature: +300ºC (please
observe the Pressure / Temperature Chart)* Vacuum Pressure: 10
-3
mmHg (abs)* End Connections: S50 – steel fl anges DIN EN1092 PN16;
S25 – Steel or Stainless Steel Butt Welding Ends – DIN 2339* Marking Standard: EN 19
Limiting Rods as standard to avoid
ruptures by excessive elongation.
Double walled bellows as standard;
OMEGA geometry of the bellow co-
rrugations to increase the effi ciency
of axial movements in the shortest
length.
Tie Rods protecting pocket as
standard
Seamless 2 piece inner sleeve,
fi tted into the compensator by
pressing force. This fl exible de-
sign permits better movements.
The sleeve avoids inner turbu-
lence and scaling into the bellows
corrugations
Standard steel fl anges, with inte-
gral eyelets to fi x the limit rods
Steel or Stainless steel butt wel-
ding unions
S50
S25
DN
(mm)
L
Axial
Movement
ØD ØK n Ød
32 150 +10, -25 140 100 4 18
40 150 +10, -25 150 110 4 18
50 150 +10, -25 165 125 4 18
65 150 +10, -25 185 145 4 18
80 150 +10, -25 200 160 8 18
100 150 +10, -25 220 180 8 18
125 150 +10, -25 250 210 8 18
150 150 +10, -25 285 240 8 22
200 200 +10, -35 340 295 12 22
250 200 +10, -35 405 355 12 26
300 200 +10, -35 460 410 12 26
Item Part Material
1 Bellows St. Steel SS304
2 Flange Steel DIN ST-37.2
3 Internal sleeve St. Steel SS304
4 limit rods Steel DIN ST-44.2
5 Limit pipe St. Steel SS304
6 Nut Steel DIN ST-44.2
7 Lug Steel DIN ST-44.2
DN
(mm)
L
Axial
Movement
Nº
Corrug.
20 250 +5, -25 30
25 250 +5, -25 28
32 350 +10, -40 36
40 350 +10, -40 32
50 350 +10, -40 24
65 350 +10, -40 20
80 350 +10, -40 20
100 350 +10, -40 16
125 350 +10, -40 15
150 350 +10, -40 14
200 350 +10, -40 13
250 350 +10, -40 12
300 350 +10, -40 12
Item
Part
Material
1 Bellows St. Steel SS304
2 Internal sleeve St. Steel SS304
3 Tube ends Steel DIN ST-44.2
4 Seal ring St. Steel SS304
Main Parts and Materials
Main Valve Dimensions (mm)
Nominal dimensions subject to manufacturing tolerance
Nominal dimensions subject to manufacturing tolerance
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: toraflex@interflex.co.uk
Distributor :
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Series S50
Series S25
TORAFLEX
T
ORAFLEX® RUBBER JOINTS
Rubber Bellows Working Parameters
Data subject to change without prior notice
JOINT TEMPORARY VACUUM LIMIT
S10 DN32-200 (1.1/4”-8”) -0,55 bar-g (0,45 bar-abs)
S10 DN250-600 (10”-24”)
-0,25 bar-g (0,75 bar-abs)S20 DN32-600 (1.1/4”-24”)
S30 DN15-80 (1/2”-3”)
USE ROOT RING
USE ROOT RING &
SPECIAL RUBBER
CONSTRUCTION
NO NEED FOR ROOT RING
VACUUM APPLICATION
Rubber Joints are resistant to negative pressures to a certain extent. They can collapse depending on vacuum suction degree; herewith the
guidelines for vacuum applications:
For temporary vacuum service beyond these limits, or in case of permanent vacuum
service at any value, use special joints with vacuum ring and limit rods assembled as
shown in fi gure at left.
USE OF ROOT RINGS FOR DOUBLE SPHERE RUBBER JOINTS
10 bar
16 bar
DN32-DN200 DN250-DN300 DN350-DN600
USE ROOT RING
NO NEED FOR ROOT RING
110ºC
60ºC
-10ºC
10 bar
16 bar
S20
S30
Limits rods for vacuum application
in S10 and S20 Joints
S20 with root ring split type
S30 with root ring integral type
-With PTFE sleeve, maximum working pressure is 7 bar
.
-Check also medium-rubber compatibility .
JOINT BURST PRESSURE
S10-S20 DN32-200 (1.1/4”-8”) 60 bar
S10-S20 DN200-600 (10”-24”) 40 bar
S30 DN15-80 (1/2”-3”) 30 bar