4
Gummi-
Kompensatoren
Rubber Expansion Joints
Manchons élastiques
Giunti antivibranti
Further Information:
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • UK
Tel: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk
CR
LT
GRUPPE
4
Section
TECHNISCHE ÄNDERUNGEN VORBEHALTEN · NACHDRUCK UND KOPIEN NUR MIT UNSEREM EINVERSTÄNDNIS
· Specifications subject to change without notice
T ype Innen / Liner
Hauptmerkmal / K ey F eature
Seite / Page
W asser und Abwasser · W ater and W aste W ater
ERV-R Butyl ( IIR ) / EPDM
Mit Trinkwasserzulassung
With drinking water approval
407
ROTEX EPDM
TÜV-geprüft für Heizungsanlagen
TÜV approved for heating systems
411
ERV-CR CR
Die preisgünstige Alternative
The economical option
415
ERV-BR BR
Für abrasive Medien
For abrasive media
417
ERP Butyl ( IIR ) / EPDM
Hoch flexibel
Extra flexible
419
Miner alölpr odukt e und Flüssiggase · P etroleum Based P roducts, Liquied P etroleum Gas
ERV-G NBR
Für Tankfahrzeuge, Ranerien und Tankstellen
For tank trucks, refineries and petrol stations
423
ERV-GS NBR
Flammbeständig für 30 Minuten bei 800° C
Fire resistant for 30 minutes at 800° C
427
ERV-GS
HNBR
HNBR
Für besonders anspruchsvolle Einsätze : - 35° C bis 120° C
For extremely demanding conditions : - 35° C to 120° C
431
ERV-G LT NBR
Für Tieftemperaturen bis - 40° C
For low temperatures up to - 40° C
435
ERV-OR NBR
Für LPG und andere Gase bis 25 bar
For LPG and other gases up to 25 bar
439
Chemie und L ebensmitt el · Chemistr y and F oodstu
ERV-GR CSM
Für aggressive Säuren, Laugen und Chemikalien
For aggressive acids, lyes and chemicals
443
ERV-W
NBR hell
NBR light grey
Konform zu Lebensmittelstandards
Confirming to foodstu standards
451
ERV-TA PTFE
Höchste chemische Beständigkeit, FDA-konform
Extensive chemical resistance, FDA conform
467
Flansche, Z ubehör und Hinweise · Flanges, Accessories and Hints
Flansche
Flanges
DIN, ASA, SAE, BS, VG, TW, JIS 461
ZS / ZSS
RG
Zubehör
Accessories
Zugstangen, Schubbegrenzungen, Gelenkverspannung
Tie rods, axial and angular limiters
464
SR
TA / TAS
Innenschutzrohre, PTFE-Auskleidungen, PTFE-Vakuum-Stützringe
Inner protection sleeves, PTFE linings, PTFE vacuum support rings
467
VSD / VSR
VSRV
Vakuum-Stützdrahtspiralen, -Stützringe
Vaccum support spirals, -support rings
468
FSH
Flammschutzhüllen
Flame protection covers
471
Übersicht ERV-Zertifikate / Overview of ERV Certificates 472
Hinweise für den Konstrukteur / Hints for the Pipework Designer 475
ERV-Montagehinweise / Installation Hints for ERV Expansion Joints 479
Informationen zur Druckgeräterichtlinie / Information concerning the Pressure Equipment Directive 483
2009
Revision 4.2017
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • UK
Tel: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk
Further Information:
ERV high quality expansion joints DN 25 –1000, by ELAFLEX / ContiTech. With swiveling flanges (various types and materials).
RED BAND expansion joint for water, drinking
water, waste water, seawater, cooling water,
chemical waste water (without oil), chemicals, acids
and alkalis, salt solutions, alcohols. Temperature
range -40°C up to 100°C, temporarily up to 120°C.
Lining Butyl / EPDM.
Rubber Expansion Joints
ERV-R
ERV-G
ERV-GS
ERV-GS HNBR
YELLOW BAND LT expansion joint designed for
low temperature applications for petroleum
based products. Temperature range -40° C up
to 90° C, temporarily up to 100° C. Lining NBR.
ERV-G LT
ORANGE BAND expansion joint for Liquid
Petroleum Gas ( LPG ) according to EN 589.
Temperature range -20°C up to 90°C, temporarily
up to 100°C. Lining NBR.
ERV-OR
ERV-GR ERV-BR
WHITE BAND expansion joint for foodstuffs,
also oils and fat containing food. Liner conforms
to German foodstuff regulations. Temperature
range -20°C up to 90°C, temporarily up to 100°C.
Lining NBR, light grey.
ERV-W
ROTEX expansion joint for permanent service
with hot heating water, cooling water and hot
air. W.P. 10 bar up to 100°C, 6 bar up to 110°C.
Temperature range -40° up to 130° Celsius,
temporarily up to 150°C. TÜV approved, DIN 4809.
Lining EPDM.
ROTEX
RED SPOT expansion joint for sanitary facilities,
cold / warm water, swimming pool water, seawater,
drinking water. Highly flexible + low own resistance.
W.P. max. 10 bar. Temperature range -40°C up to
90°C, temporarily up to 120°C. Lining Butyl / EPDM.
ERP
CR expansion joint for cold and warm water,
seawater ( also oil containing ), various waste
water, lube oils and greases, air, compressed air.
Temperature range -25° C up to 90° C, temporarily
up to 100° C. Lining Chloroprene.
ERV-CR
Accessories
With additional
PTFE liner
( ERV...TA )
With vacuum support spiral
( ERV... VSD ) or ring
( ERV... VSR )
Flame
protection cover
(FSH)
With inner protection sleeve
of stainless steel, e.g. for
granulates ( ERV... SR )
With tie rods
as limiters
( ERV... ZS )
BLU E SPOT expansion joint for abrasive
sludges, solid/liquid mixtures, dusty &
powdery products. Temperature range -50° C
to 7 0 °C, temporarily to 90° C. Lining BR/NR.
YELLOW STEEL HNBR expansion joint for
petroleum based products up to 50% aromatics
and hydraulic oil. Very good ageing, weathering +
ozone resistance. Temperature range -35°C up
to 100°C, temporarily up to 120°C. Lining HNBR.
GREEN BAND expansion joint for acids, alkalis,
chemicals and aggressive chemical waste
water. Temperature range -20°C up to 100°C,
temporarily up to 110°C. For oil contaminated
compressor air up to 90°C. Lining Hypalon
®
.
YELLOW BAND expansion joint for petroleum
based products up to 50% aromatics, also town
gas and natural ga
s
, cooling water emulsi
o
ns
with corrosion preventing oil. Temperature
range -20°C up to 9
0
°C, temp
ora
rily up to 100°C.
Lining NBR.
YELLOW STEEL expansion joint. Similar to type
ERV-G, but fire resistant acc. to ISO 15540
( type approved ). Temperature range -20° C up
to 90° C, temporarily up to 100° C.
Lining NBR.
Type ERV-R
Type ERV-G LT
Type ERV-GS HNBR
Type ERV-OR
Type ERV-W
Type ROTEX
Type ERP
Type ERV-CR
Type ERV-G Type ERV-GS
Type ERV-BRType ERV-GR
1-1
A
vailable Elaflex ERV Rubber Expansion Joints:
Types and Lengths
ERV-GSHNBR 130
ERV-GSHNBR 150
ERV-GSHNBR 175
ERV-GSHNBR 200
ERV-GSHNBR 250
ERV-OR 130
ERV-R 130
ERV-R 150
ERV-R 160
ERV-R 175
ERV-R 200
ERV-R 250
ERV-R 260
ERV-R 300
ERV-W 130
ERV-W 200
ERV-W 250
ROTEX 130
ROTEX 150
ROTEX 160
ROTEX 175
ROTEX 200
ROTEX 250
ROTEX 260
ROTEX 300
DN
DN
25 lll ll
32 llll lll
40 llll lll
50 lllll lll
65 lllll lll
80 ll l lll l lll
100 ll l lll l lll
125 ll l lll l lll
150 ll l lll l lll
200 ll llll l llll
250 ll l ll l l ll
300 lll l ll l
350 llll
400 llll
450 ll ll ll ll
500 llll
600 llll
700 ll
800 ll
900 ll
1000 ll
ERP 130
ERV-BR 130
ERV-CR 130
ERV-CR 200
ERV-CR 250
ERV-CR 260
ERV-CR 300
ERV-G 130
ERV-G 150
ERV-G 160
ERV-G 175
ERV-G 200
ERV-G 250
ERV-G 260
ERV-G 300
ERV-GLT 130
ERV-GR 130
ERV-GR 200
ERV-GR 250
ERV-GR 260
ERV-GS 130
ERV-GS 150
ERV-GS 175
ERV-GS 200
ERV-GS 250
25 ll l l l l l
32 ll l l l l l l
40 ll l l l l l l
50 l ll l ll ll l
65 l ll l ll ll l
80 l ll l ll ll ll
100 ll l l ll l l l l
125 ll l l ll l l l l
150 l ll l ll ll ll
200 ll l lll ll l l
250 ll l ll ll l l
300 l lllllll
350 llll
400 llll
450 ll ll ll l l
500 l lll
600 llll
700 lll
800 ll
900 ll
1000 ll
Yellow Steel HNBR Red Band
CR
Yellow Band
RotexWhite
Ora
nge
ERP
Blue
LT
Green Yellow Steel
Checklist for Expansion Joints
1. Medium
• Chemical composition
• Gaseous, liquid, paste-like
• Abrasion
2. Operation conditions
• Minimum and maximum temperature
• Maximum pressure
• Vacuum
• Axial range of movement (elongation / compression)
• Angular load
• Lateral offset
• Dynamic load
3. Installation Site
• Indoor or outdoor installation
• Exposure to sunlight (UV)
• Salt-containing atmosphere
4. Classification acc. to Pressure Equipment Directive?
The requirements of the Pressure Equipment Directive may apply, especially when gaseous media are used.
Temperature depending working pressure
Type
Working Temperature depending Bellow
Temperature max. range of movement* PN 10 PN 16 PN 25
ERV-R / ERV-CR / ERV-G 50°C 100% 10 bar 16 bar -
ERV-G LT / ERV-GR / VITEX 70°C 80% 8 bar 12 bar -
ERV-W 100°C 60% 6 bar 10 bar -
ERV-BR
50°C 100% 10 bar 16 bar -
70°C 80% 8 bar 12 bar -
50°C 100% --25 bar
ERV-OR 70°C 80% --20 bar
100°C 60% --15 bar
50°C 100% 10 bar --
ERP 70°C 80% 8 bar --
100°C 60% 6 bar --
70°C 100% 10 bar 16 bar -
ROTEX 100°C 75% 7,5 bar 12 bar -
130°C 50% 5 bar 8 bar -
ERV-GS / ERV-GS HNBR
60°C 100% 10 bar 16 bar -
100°C 60% 6 bar 10 bar -
*) For type specific range of movement see data sheets.
Depending on media, a reduction of working conditions may be necessary. Please ask our sales team in case of questions.
Temperature depending range of movement and pressure
The following list shows the dependencies of overpressure, range of movement and temperature for ERV expansion joints.
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • UK
Tel: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk
Further Information:
468
D
D
D
Vakuum-Stützdrahtspiralen und Stützringe für ERV · Vacuum Support Spiral and Ring for ERV
DN D BESTELLNUMMER
Diam.
Nom.
Part
Number
mm ≈ mm Type
Lieferbar für alle ERV-Typen DN 50 – 300.
Windungszahl und Drahtstärke entspre-
chend der Belastung bei den einzelnen
Nennweiten. Die Stützspiralen können
auch leichtnachträglich montiert werden.
Keine Einschränkung der Druckbelastbar-
keit des ERV. Der Bewegungsbereich wird
um ca. 50 % eingeschränkt.
___
Available for DN 50 – 300. Number of turns
and material thickness vary with DN. The
vacuum support spiral can be easily
mounted sub-sequently. No restriction of
admissible pressure for ERV. Movement
range restricted by approximately 50 %.
50
85
ERV… 50…VSD
ERV mit Vakuum-Stützdrahtspirale. Bei nicht ausrei-
chender Vakuum-Beständigkeit
*
)
eines gewählten ERV.
Spirale aus Edelstahl 1.4571.
65
110 ERV… 65…VSD
80
130
ERV… 80…VSD
100
180 ERV…100…VSD
125
230 ERV…125…VSD
150
270 ERV…150…VSD
ERV with vacuum support spiral. Spiral of AISI 316 Ti ,
used when the vacuum resistance
*
)
of the chosen ERV
is not sucient.
200
320 ERV…200…VSD
250
420 ERV…250…VSD
300
500
ERV…300…VSD
Lieferbar für alle ERV-Typen DN 125 – 600.
Die Stützringe können auch leicht
nachträglich montiert werden. Keine
Einschränkung der Druckbelastbarkeit
des ERV. Der Bewegungsbereich wird um
ca. 50 % ein geschränkt.
___
Available for DN 125 – 600. The vacuum
support rings can be easily mounted
subsequently. No restriction of
admissable pressure for ERV.
Movement range restricted by approx.
50 %.
125
175
ERV…125…VSR
ERV Vakuum-Stützring. Bei nicht ausreichender Vakuum-
Beständigkeit
*
)
eines gewählten ERV. Oener Ring aus
Edelstahl 1.4571.
150
190 ERV…150…VSR
200
260 ERV…200…VSR
250
300 ERV…250…VSR
300
350 ERV…300…VSR
350
410
ERV…350…VSR
ERV with vacuum support ring. Ring of AISI 316 Ti ,
used when the vacuum resistance
*
)
of the chosen ERV
is not sucient.
400
480 ERV…400…VSR
450
540 ERV…450…VSR
500
580 ERV…500…VSR
600
680
ERV…600…VSR
Lieferbar für alle ERV-Typen DN 500 – 1000.
Die Stützringe können auch leicht
nachträglich montiert werden. Keine
Einschränkung der Druckbelastbarkeit
des ERV. Der Bewegungsbereich wird um
ca. 50 % ein geschränkt.
___
Available for DN 500 – 1000. The vacuum
support rings can be easily mounted
450
520
ERV…450…VSRV
ERV Vakuum-Stützring in verschraubter Ausführung.
Für maximale Vakuum-Beständigkeit
*
)
eines gewählten
ERV. Verschraubter Ring aus Edelstahl 1.4571.
500
545 ERV…500…VSRV
600
640 ERV…600…VSRV
700
780 ERV…700…VSRV
800
850 ERV…800…VSRV
ERV with bolted vacuum support ring. For maximal
vacuum resistance
*
)
of the selected ERV. Bolted ring in
stainless steel AISI 316 Ti .
900
1000
ERV…900…VSRV
1000
1085
ERV..1000… VSRV
Zulässige Vakuumbeanspruchung siehe typenspezifische ERV-Datenblätter.
*
)
Admissible vacuum see catalogue pages type specific ERV data sheets.
Type VSD
Type VSR
Type VSRV
subsequently. No restriction of
admissable pressure for ERV.
Movement range restricted by approx.
50 %
467
D
D
D
GRUPPE AUSFÜHRUNG · WERKSTOFFE DN D BESTELL-
NUMMER
4
Construction Details
Materials
Diam.
Nom.
Part
Number
Section
Specification mm ≈ mm Type
TECHNISCHE ÄNDERUNGEN VORBEHALTEN · NACHDRUCK UND KOPIEN NUR MIT UNSEREM EINVERSTÄNDNIS · Specifications subject to change without notice
Bish. Katalogseite 403 und 417 / Prev. catalogue page 403 und 417
Lieferbar für alle ERV-Typen DN 25 – 600.
Nennweitenabhängige Wandstärke des
Edelstahlblechs zwischen 1 und 3 mm.
Laterale und angulare Bewegungen sind
nur sehr eingeschränkt möglich.
Konische Schutzrohre auf Anfrage.
Hinweis : Zwischen dem Kragen des Innen-
schutzrohres und dem Gegenflansch ist
der Einsatz einer zusätzlichen Dichtung
erforderlich.
___
Available for all ERV types DN 25 – 600.
Wall thickness of stainless steel sleeve
depen-ding on DN, between 1 and 3
mm. Lateral and angular movements are
significantly reduced.
Conical sleeves available on request.
Please note : Between the bead
(
flange
surface
)
of the inner protection sleeve
and the counter flange an additional seal
must be used.
25
22 ERV… 25…SR *
)
ERV mit Innenschutzrohr
(
Leitrohr
)
aus Edelstahl 1.4571 zur
Vermeidung von Abrieb des Innengummis, z. B. für Medien mit
abrasiven Bestandteilen oder zur Vermeidung von Kavitation.
Bitte beachten: Die lichte Weite wird
reduziert.
32
22 ERV… 32…SR
40
30 ERV… 40…SR
50
38 ERV… 50…SR
65
53 ERV… 65…SR
80
72 ERV… 80…SR
100
88 ERV…100…SR
125
112 ERV…125…SR
150
138 ERV…150…SR
ERV with inner protection sleeve of stainless steel AISI 316 Ti
to prevent abrasion of the rubber liner, i. e. for mediacontaining
abrasive components or to avoid cavitation.
Please note : The nominal bore is reduced.
200
190 ERV…200…SR
250
235 ERV…250…SR
300
290 ERV…300…SR
350
320 ERV…350…SR
400
390 ERV…400…SR
450
440 ERV…450…SR
500
490 ERV…500…SR
600
590 ERV…600…SR
Lieferbar für alle ERV-Typen DN 25 – 300.
Nahtlose Konstruktion mit Dichtbunden,
aus PTFE, ca. 1 mm dick. Die Produktion
erfolgt nur im kompletten Gummikompen-
sator. Lieferung loser Auskleidungen ist
nicht möglich. Einschrän kung des zuläs-
sigen Bewegungsbereichs um ca. 50 % .
FDA konform.
___
Available for DN 25 – 300. Seamless lining
with sealing surface, PTFE, approx. 1 mm
thickness. Delivered only as complete
factory mounted unit with flanges. Un-
mounted lining not available. The allow
movement range of the ERV is restricted
by approximately 50 %.
FDA conform.
25
26 ERV… 25…TA *
)
ERV mit weißer PTFE-Auskleidung. Bei nicht ausreichender
che mischer Beständigkeit des gewählten ERV-Types. Geeignet
für alle gebräuchlichen Flüssigkeiten.
Elektrisch isolierend, daher nicht für brennbare Flüssigkeiten in
Ex-Zonen geeignet. Die Temperaturbeständigkeit des Gummi-
balges muss beachtet werden. Für Druckbeanspruchung bis
6 bar – nicht geeignet für Vakuum.
32
26 ERV… 32…TA
40
34 ERV… 40…TA
50
44 ERV… 50…TA
65
59 ERV… 65…TA
80
72 ERV… 80…TA
100
92 ERV…100…TA
ERV with white PTFE lining. Used when the chemical resistance
of the chosen ERV type is insucient. Resistant to all commonly
used liquids.
Electrically isolating, therefore not suitable for flammable liquids
in Ex-Zones. Admissible working temperature of expansion joint
has to be observed. For maximum pressure of 6 bar – not suitable
for vacuum.
125
115 ERV…125…TA
150
138 ERV…150…TA
200
187 ERV…200…TA
250
235 ERV…250…TA
300
285 ERV…300…TA
___
Available for DN 50 – 3
00. Seamless PTFE
lining as 'TA' but additionally with factory
mounted support ring of solid PTFE. The
allowable movement range is restricted by
approximately 50 %
.
FDA conform.
50
44 ERV…50…TAS
ERV mit PTFE-Auskleidung und PTFE-Vakuum-Stützring.
Wie Type TA, jedoch zusätzlich geeignet für Vakuumbeanspruchung.
Einsatz bis max. 70° C.
65
59 ERV…65…TAS
80
72 ERV…80…TAS
100
92 ERV…100…TAS
125
115 ERV…125…TAS
150
138 ERV…150…TAS
ERV with PTFE lining and PTFE vacuum support ring. Proper-
ties like type TA, but also suitable for vacuum service, up to 70° C.
200
187 ERV…200…TAS
250
235 ERV…250…TAS
300
285 ERV…300…TAS
2009
Revision 8.2016
F
ür Gummikompensatoren DN 25 werden Bälge DN 32 verwendet.
*
)
For rubber expansion joints DN 25 bellows DN 32 are used.
ERV-Leitrohre / PTFE-Auskleidungen
ERV Inner Sleeves / PTFE Linings
Ty
pe SR
Type TA
Type TAS
Lieferbar für alle ERV-Typen DN 50 – 300.
Nahtlose PTFE-Auskleidung wie 'TA',
jedoch zusätzlich mit werksseitig
eingepresstem Stützring aus massivem
PTFE.
Der zulässige Bewegungsbereich der
Gummikompensatoren wird um ca. 50 %
eingeschränkt.
FDA konform.
L
D
D
l
GRUPPE DN
l
D Länge L BESTELL-
NUMMER
4
Length L Part
Number
Section
mm mm mm mm Type
TECHNISCHE ÄNDERUNGEN VORBEHALTEN · NACHDRUCK UND KOPIEN NUR MIT UNSEREM EINVERSTÄNDNIS · Specifications subject to change without notice
Bish. Katalogseite 0421 / Prev. catalogue page 0421
A
usführung für ERV mit Flanschen nach DIN PN 10 / 16
___
Type for ERV with flanges according to DIN PN 10 / 16
Flammschutzhülle für ERV-Gummikompensatoren, aus meh-
reren Lagen Glasfilamentgewebe mit Oberflächenbeschichtung
aus silberfarbenem, hochtemperaturbeständigem Silikon-
Aluglasgewebe
(
zertifiziert nach MED A1 / 3.13
)
. Schrauben,
Muttern und Unterlegscheiben aus Messing. Die Flammschutz-
hülle schützt den Gummikompensator zuverlässig gegen
Strahlungshitze und direkte Flammeneinwirkung bis + 800° C
für 30 Minuten
(
ISO 15540
)
und ist unempfindlich gegenüber
ÖI- und Chemikalieneinflüssen sowie alterungs- und witterungs-
beständig.
Auf Grund ihrer geteilten Form kann die Flammschutzhülle nach-
träglich montiert und wieder geönet werden. Die Abmessungen
wurden so gewählt, dass auch die Gegenflansche vollkommen
abgedeckt sind. Der zulässige Bewegungsbereich wird nicht
eingeschränkt.
Flame protection cover for ERV rubber expansion joints, made
of several layers of glass fiber fabric with a surface cover of silver-
coloured high temperature resistant silicone-aluminium-glas
fabric
(
certified acc. MED A1 / 3.13
)
. Screws, nuts and washers
of brass. It reliably protects the expansion joint against radiation
heat and direct flames up to + 800° C for 30 minutes
(
ISO 15540
)
.
The flame protection cover is resistant against oil and chemical
influences as well as against ageing and weathering.
Because of its split design the flame protection cover can be
mounted subsequently or re-opened. The dimensions have been
chosen in such a way that also the counter flanges are completely
covered. The allowed range of movement is not restricted.
25 30 170
260
FSH für / for ERV 25x130
32 40 190 FSH für / for ERV 32x130
40 45 195 FSH für / for ERV 40x130
50 60 210 FSH für / for ERV 50x130
65 75 225 FSH für / for ERV 65x130
80 90 240 FSH für / for ERV 80x130
100 110 260 FSH für / for ERV 100x130
125 135 285 FSH für / for ERV 125x130
150 160 330 FSH für / for ERV 150x130
200 220 385 FSH für / for ERV 200x130
250 265 435 FSH für / for ERV 250x130
300 315 485 FSH für / for ERV 300x130
25 30 170
300
FSH für / for ERV 25x160
32 40 190 FSH für / for ERV 32x160
40 45 195 FSH für / for ERV 40x160
50 60 210 FSH für / for ERV 50x160
65 75 225 FSH für / for ERV 65x160
80 90 240 FSH für / for ERV 80x160
100 110 260 FSH für / for ERV 100x160
125 135 285 FSH für / for ERV 125x160
150 160 330 FSH für / for ERV 150x160
200 220 385 FSH für / for ERV 200x160
250 265 435
340
FSH für / for ERV 250x200
300 315 485 FSH für / for ERV 300x200
Ausführung für ERV mit Flanschen nach VG 95959-1
(
Marine-Norm
)
––
Type for ERV with flanges according to VG 95959-1
(
German Naval Standard
)
32 40 150
260
FSH-M für / for ERV 32x130
40 45 155 FSH-M für / for ERV 40x130
50 60 170 FSH-M für / for ERV 50x130
65 75 185 FSH-M für /for ERV 65x130
80 90 200 FSH-M für / for ERV 80x130
100 110 220 FSH-M für / for ERV 100x130
125 135 245 FSH-M für / for ERV 125x130
150 160 270 FSH-M für / for ERV 150x130
200 215 345 FSH-M für / for ERV 200x130
250 265 395 FSH-M für / for ERV 250x13
32 40 150
300
FSH-M für / for ERV 32x160
40 45 155 FSH-M für / for ERV 40x160
50 60 170 FSH-M für / for ERV 50x160
65 75 185 FSH-M für / for ERV 65x160
80 90 200 FSH-M für / for ERV 80x160
100 110 220 FSH-M für / for ERV 100x160
125 135 245 FSH-M für / for ERV 125x160
150 160 270 FSH-M für / for ERV 150x160
200 215 345 FSH-M für / for ERV 200x160
250 265 395 340 FSH-M für / for ERV 250x200
2009
Revision 9.2017
Ty
pe FSH
geönet / open
geschlossen / closed
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • UK
Tel: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk
Further Information:
464
10 000
DN 300 DN 250
7500
DN 200
DN 150
DN 225
DN 100
DN 80
DN 65
DN 50
5000
kg
2500
1000
750
500
250
100
1 2 3 4 5 6 10 16 20 25
bar –––––
▶
Nennweite
DN
mm
Anzahl der
Zugstangen
Number
tie rods
BESTELL-
NUMMER
Part
Number
Type
25 2 ERV 25 … ZS
32 2 ERV 32 … ZS
40 2 ERV 40 … ZS
50 2 ERV 50 … ZS
65 2 ERV 65 … ZS
80 2 ERV 80 … ZS
100 2 ERV 100 … ZS
125 2 ERV 125 … ZS
150 2 ERV 150 … ZS
200 2 ERV 200 … ZS
250 2 ERV 250 … ZS
300 4 ERV 300 … ZS
350 4 ERV 350 … ZS
400 4 ERV 400 … ZS
450 4 ERV 450 … ZS
500 4 ERV 500 … ZS
600 4 ERV 600 … ZS
Angaben für Flansche DIN PN 10, Änderungen der Zugstangenanzahl
bei anderen Flanschnormen vorbehalten.
Values for flanges DIN PN 10, number of tie rods may change
with dierent flange standards.
Längenbegrenzungs flansche − Type ZS
Aus der nebenstehenden Tabelle ergibt sich, dass die Reak tions -
kräfte bei den kleinen ERV-Dimensionen bis DN 50 so gering sind,
dass Längenbegrenzer normalerweise nicht erforderlich sind.
Längenbegrenzer sind nur dann nötig, wenn es nicht möglich ist,
das Rohrleitungssystem mit ausreichenden Festpunkten zu sichern
oder eine Teilentlastung der Festpunkte gewünscht wird.
Die erforderlichen Zugstangen werden so bemessen, dass sie auch
die aus dem Prüfdruck resultierenden Reaktionskräfte aufnehmen
können.
Für die hauptsächlich erforderliche Axialbegrenzung haben sich die
abgebildeten Ausführungen mit integrierter Verspannung sehr gut
bewährt. Die Zugstangen mit hoher Festigkeit
(
Stahl8.8
)
sind axial
auf die tatsächlichen Einbaumaße einstellbar. Sie sind elastisch
gelagert in geräuschdämmenden Gummibuchsen aus witterungs-
beständigem Kunstkautschuk. Ab DN 350 sind die Zugstangen
grundsätzlich in Kugelscheiben und Kegelpfannen gelagert.
Bei der Montage der ERV ZS / ZSS ist darauf zu achten, dass die
Muttern an den Gewindestangen gekontert sind. Dabei ist das in
den ELAFLEX-Katalogseiten vorgegebene Maximalmaß für die
Auslängung zu berücksichtigen.
ERV Zugstangen und Angularverspannung ? ERV Tie Rods and Angular Limiters
Pressure thrust forces of ERV Expansion Joints
( installation length = 130 mm )
Außenverspannung
mit Gummibuchsen
Type ... ZS
(
PN16 bis / up to DN 200
)
(
PN10 bis / up to DN 300
)
Tie rods with
outer limitation in
rubber bushings
Außenverspannung
mit Kugelscheiben
und Kegelpfannen
Type ... ZS
(
PN16 ab / from DN 250
)
(
PN10 ab / from DN 350
)
Tie rods with
outer limitation
in spherical discs
and conical seats
Angular-
Innenverspannung
Type ... RG
(
bis / up to DN 300
)
Angular limiter
Reaktionskräfte von ERV-Gummikompensatoren
( Einbaulänge = 130 mm )
Tied Flanges – Type ZS
The table shows that the pressure thrust forces in small ERV dimen-
sions up to DN 50 are this low that limiters normally are not necessary
.
Limiters are recommended when it is not possi ble to secure the pipe
system with sucient fixed points or when a part relief of the fixed
points is desired.
The required limiters are measured to absorb also the reaction forces
resulting from the test pressure.
For the mainly required axial limitation the shown types with
integrated tie bars have proved well. The tie bars with high stability
(
steel 8.8
)
can be adjusted to the actual installation meas urements.
The tie bars lie elastically in noise reducing rubber bushes of
weatherproof rubber. From DN 350 the tie rods lie in prinicipal in
conical seats and spherical washers.
When assembling ERV ZS / ZSS ensure that the nuts on the threaded
rods are fixed with locking nuts. Please observe the Maximum ad-
missible
(
L max
)
elongation of the bellows stated on our catalogue.
Innen- und
Außenverspannung
Type ... ZSS
(
bis / up to DN 300
)
Tie rods with inner
and outer limitation
Sonderausführungen · Special Designs
476
B
C
D
E
F
G
A
right :
Flanges with
correct ID help
prevent damage
to rubber.
ID acc.
to DIN
stabilising rim
wrong :
Flanges with
too large
diameter
can damage
rubber.
ID acc.
to ISO
wrong :
Uneven
end of pipe
can cause
damage
to rubber.
right :
In case of
B, D or F an
additional
gasket can
be used to
prevent
damage
to rubber.
right :
Weld neck
flanges with
correct ID
prevent
damage
to rubber.
pipe
stop
right :
Well rounded
smooth egde
prevents
damage
to rubber.
wrong :
Inner
edge of
flanges
damages
rubber.
Hints for the Pipework Designer
ERV rubber expansion joints are delivered ready for installation. The swiveling flanges can be fitted
in any desired position and have stabilising rims to ease the assembly. Flanges with stabilising
rim
(
collar
)
also help to maintain a safety gap between screw ends and the bellows throughout
the whole range of movement and avoid injuries.
Correct Mating Flanges
Gaskets are not required if the sealing surface of the pipework mating flanges are designed as
shown on the right hand side. Gaskets should only be used in order to prevent damage to the
rubber sealing surface, for example if the mating flanges show sharp inner edges or irregularities
e. g. welding beads. If the internal diameter of the mating flanges is too large
(
sealing surface of
the expansion joint not fully covered
)
, install a gasket and an additional disc
(
fig. E
)
.
Pressure Resistance
The maximum operating pressure and test pressure not only depend on the burst pressure of the
rubber bellow but can also be aected by operating temperature and design pressure / nominal
pressure of the used flanges. For full details please see catalogue page 404. The burst pressure
(
at room temperature
)
is at least 3 - 4 times the nominal pressure
(
PN
)
. Pressure test certificates
can be issued upon request.
Vacuum Resistance
The maximum vacuum depends on size, operating temperature, length of installation and the
installation of vacuum support rings
(
page 468
)
. Please see type specific data sheets for details. The
vacuum resistance can be slightly increased even without vacuum support rings if the installation
length is shortened
(
e. g. by 20 mm
)
. The vacuum resistance decreases if a longer installation
length is chosen, or the expansion joint is lengthened during operation.
Weather and Heat Resistance
The outer rubber
(
cover
)
is resistant against weathering and protects the reinforcements against
ageing, abrasion and corrosion. For the permitted temperature range please see type specific
data sheets. For permanently warm operating conditions including external radiation heat please
see page 404.
ERV types with an outer rubber of CR or CSM are
(
within limits
)
oil proof and flame resistant.
An additional flame protection can be achieved by using our flame protection cover conforming
to ISO 15540 standard
(
certificate 'DNV · G L'
)
– see catalogue pages 471 and 472.
Pressure Loss
The internal design of the ERV bellows allows a high flow with little turbulence. Therefore the
pressure loss is usually negligible, even when dealing with high flowrates.
Maximum Flow Velocity
Flow velocity should not exceed 7 m/s. For flammable fluids, the maximum flow velocity should
be further reduced depending on the electrical conductivity of the fluid. For non conductive and
flammable fluids such as toluene a value of 2 m/s should not be exceeded.
Noise Reduction
Due to their construction, ERV rubber expansion expansion joints are well suited to absorb vibrations
and noise. An ERV installed within a piping system achieves a partial decoupling of vibration and
noise transmission. The degree of this eect is dependent on the layout of the piping system
and the assembly situation of the expansion joint. The pipework and the installed expansion joint
may be seen as spring-mass system ; its natural frequency is determined by the spring rigidity
as well as by the oscillating mass. In comparison to the piping system, the mass of an ERV has a
neglectable influence on the natural frequency of the piping system.
Installation Length / Installation Gap
For the allowable range of movement please see type specific data sheets. If possible, the length
of the installation gap is designed to be equal to the recommended installation length, or slightly
shorter. The low inherent resistance of ERV makes fitting into smaller gaps easy.
For larger installation gaps or lateral oset, not more than 50 % of the maximum area of movement
should be used up in order to leave a reserve for operation. If the bellows is lengthened during
operation, a jolted
(
compressed
)
installation is recommended. The position of installation must be
accessible for visual inspection. When installing the unit, installation hints
(
catalogue page 479
)
must be observed.
Anchor Load / Tie Rods
(
Limiters
)
The inherent resistance of an ERV is small and can be disregarded for anchor force calculation. But
when pressurised, the bellows expands and generates an axial force. Therefore, especially for larger
expansion joints, fixed points
(
anchors
)
should be provided. Since the ERV construction absorbs
part of these reaction forces, anchor points may be designed correspondingly weaker. If anchor
points cannot be provided, or if the stability of the piping system or other fittings is insucient,
reaction forces have to limited by tie rods – available types see catalogue catalogue page 464.
gasket
disc
We recommend ring wrenches instead of open-end wrench for
higher job safety and less risk of accidents
Note :
the bellows may not touch
the screws in all operating
conditions
wrong
correct
less than or equal to
recomm. max. installation length
l a r g e r than recommended
max. installation length
min. 1 mm
ELAFLEX expansion joints are provided ready for installation.
The standard fl anges can be turned into any desired position.
Additional sealings usually are not necessary. For installation
please observe the following
:
1
)
Prior to the installation of the expansion joint ensure that
the mating fl anges have satisfactory sealing surfaces. Check
that the sealing surface of the rubber bellows is completely
covered by the mating fl ange. Mating fl anges with too large
inner diameter or protruding pipe ends, grooves and tongues
can destroy the sealing surface of the bellows
(
see hints for
the pipework designer, page 476
)
.
Attention : When using slip-on fl anges the outside diameter
must be larger than the sealing surface of the expansion
joint.
2
)
P ay attention to the correct installation length : The
pulling of expansion joints into installation gaps which
are too large will lengthen the rubber bellow and might
lead to the collar being drawn out of the fl
ange groove
(
see
picture
)
. During the subsequent tightening of the screws
the collar of the bellows would be crushed asymmetrically.
P lease note : A considerable lengthening during installation
decreases the allowable range of movement during operation.
To shorten installation gaps, distance fl anges are available.
3
)
I f possible install the expansion joints in such way that
the date of production is visible.
4
)
Screws should be inserted from the expansion joint side. If
this is not feasible, it must be assured that the bellows may
not touch the screws in all operating conditions.
5
)
W e recommend to use bolts of ISO grade 8.8 or higher.
The bolts have to be fastened crosswise in 3 uniform steps.
When using a torque wrench :
1st step :
Tighten bolts equally by hand
(
pay attention to parallel sealing surfaces!
)
.
2nd step :
Fasten crosswise with torque 50 Nm.
3rd step :
Fasten crosswise
approx. torque
up to DN 80 max. 80 Nm
up to DN 300 max. 100 Nm
up to DN 500 max. 130 Nm
DN 600 190 Nm
DN 700 250 Nm
DN 800 300 Nm
DN 900 310 Nm
DN 1000 340 Nm
Do not use any sharp-edged tools which might damage the
rubber bellow in case the tool slips.
6
)
If no torque wrench can be used during installation, the
screws may be tightened to an extent that between the
metal fl anges a distance 'y' of at least 1 mm remains
(
see
picture
)
.
7
)
T he test pressure of a bellow or fl ange is 1.5 x PN. This value
depends on which component is weaker.
8
)
T he rubber bellow of the expansion joint must not be
painted ! Solvents can damage the rubber cover, further-
more the colour coat impedes a proper visual inspection.
9
)
When welding and cutting, the rubber bellow must be
protected against heat by all means. For electric welding
it must be insured that the electric current does not pass
through the bellows.
10
)
Permanent radiation heat above 90° C must be avoided.
If necessary fl ame protection covers should be used
(
see page 471
)
.
11
)
R ubber expansion joints are subject to wear and must be
included to routine inspection of the pipe system
(
visual
inspection of the expansion joint regarding damages as well
as inspection for hardening by pushing in with a thumb
)
.
12
)
Expansion joints with pull rods
(
tied fl anges
)
are supplied
in neutral position, with pre-installed countered nuts. During
installation the required permissable length has to be set/
determined by the pipeline fi tter, nuts have to be countered.
After installation, the pull rods shall be fi rmly connected with
the fl anges.
Installation and Operation Hints for ERV Expansion Joints
Further Information:
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk
