YELLOW BAND
RUBBER BELLOWS EXPANSION JOINTS
TEMPERATURE RATING 90 ºC
(194 ºF)
The Yellow Band expansion joints are low corrugation, highly elastic rubber bellows expansion joints, characterised
by high movement absorption in all directions. The low corrugation achieves low flow resistance, and the expansion
joints reduce up to 70 % of the incoming energy. They are designed to specifically absorb expansion and vibration,
and to absorb noise and insulate sound.
The Yellow Band are constructed with temperature resistant polyamide fabric for permanent use in installations for
many years use with petroleum based products, oils, fuels, lubricants and greases, animal and vegetable fats, and
gases, including natural gas. Also suitable for DIN EN fuels with aromatic content up to 50%. In addition they are
suitable for water and air services. Temperature range is -20 to +90 ºC (+194 ºF), with brief short term rating up to
+100 ºC (+212 ºF).
For use with LPG & Liquified Gases, see Types Yellow LT Band and Orange Band. For lower or higher
temperatures, see Other Grades listed below.
The Yellow Band are used in building technology, biogas & plant engineering, water & wastewater works, engine
construction, shipbuilding, and petrochemical, industrial and solar & wind energy engineering.
The Yellow Band are manufactured within the European Union, and are equivalents to, and interchangeable with,
Elaflex ERV-G Yellow Band, Trelleborg Teguflex C, P & W Yellow Band, and Stenflex A, R & AG expansion joints.
Construction :
Liner : NBR (Nitrile, Buna-N, Perbunan).
Reinforcement : Polyamide.
Cover : Chloroprene (Neoprene), with One Yellow Stripe.
Resistant to Weather, Aging & Ozone.
Electrically Conductive Surface Area.
Not Suitable for Chlorinated Hydrocarbons or Potable Water.
Ends :
Flanges are swivel (rotating) both sides, with integral rubber sealing face. Additional gaskets are not required.
Standard drilling is PN10 or PN16. Other drillings to PN6, PN25, PN40, ANSI 150/300, BS10, JIS, TW, TTMA, VG,
SAE3000, or special designs are also available.
Model 49 have tapped/threaded bolt holes.
Standard material is Carbon Steel S235JRG2 (RSt 37-2), Zinc Plated.
Also available with Hot Dipped Galvanised Carbon Steel, Stainless Steel,
Aluminium, Bronze, or other materials.
Model 46 are supplied with Threaded BSPT Male or BSP Female Ends.
Pressure Ratings :
Model 49 : DN32 to DN350 : 25 BarG @ 50 ºC 18 BarG @ 70 ºC 12 BarG @ 90 ºC
DN400 & DN500 : 16 BarG @ 50 ºC 16 BarG @ 70 ºC 10 BarG @ 90 ºC
All Other Models : DN20 to DN200 : 16 BarG @ 50 ºC 12 BarG @ 70 ºC 10 BarG @ 90 ºC
Models 50 & 55 : DN250 : 16 BarG @ 50 ºC 12 BarG @ 70 ºC 10 BarG @ 90 ºC
Model 50 : DN300 to DN400 : 16 BarG @ 50 ºC 12 BarG @ 70 ºC 10 BarG @ 90 ºC
Model 55 : DN300 to DN400 : 10 BarG @ 50 ºC 10 BarG @ 70 ºC 10 BarG @ 90 ºC
Model 55SO : DN250 & DN300 : 10 BarG @ 50 ºC 10 BarG @ 70 ºC 10 BarG @ 90 ºC
Models 50 & 55 : DN450 to DN1000 : 10 BarG @ 50 ºC 8 BarG @ 70 ºC 6 BarG @ 90 ºC
Model 52 : Check with factory.
Model 46
www.interflex.co.uk
Approvals :
Models 46, 49, 50, 55 and 55SO are Type Approved by Lloyds Register of Shipping, and DNV (depending on size).
Lengths :
Bore DN / NB Lengths (mm)
mm inch
Model
49
Model
50
Model
55
Model
55SO
Model 46
Female
Model 46
Male
Model
52
20 ¾ - 130 125 160 190 214 -
25 1 - 130 125 160 182 214 -
32 1¼ 100 130 125 160 190 240 150
40 1½ 100 130 125 160 198 250 150
50 2 100 130 125/150 160 198 260 150
65 2½ 100 130 125/150 160 - - 150
80 3 100 130 150 160 - - 175
100 4 100 130 150 160 - - 175
125 5 100 130 150 160 - - 175
150 6 100 130 150 160 - - 175
200 8 100 130 150/175 160 - - 150/200
250 10 100 130 175 200 - - 150/250
300 12 100 130 200 200 - - 150/165/175
350 14 100 200 200 - - - 200
400 16 110 200 200 - - - 250/300
450 18 - 200 250 - - - 250
500 20 110 200 - - - - 250
600 24 - 200 - - - - 250
700 28 - 250 260/275 - - - -
800 32 - 250 250 - - - -
900 36 - 300 300 - - - -
1000 40 - 300 300 - - - -
Vacuum Ratings :
Model 46 : Rated for Vacuum.
Models 49, 50, 55, 55SO & 52 :
DN20 to DN50 - Rated for Vacuum.
DN65 to DN250 - Rated for -0.2 BarG Vacuum ;
- For higher vacuum, Internal Vacuum Ring required.
DN300 & Above - Internal Vacuum Ring required.
Other Grades :
Yellow LT Band - Special grade for Low Temperatures and Liquified Gases, to -40 ºC.
Orange Band - Special grade for LPG & Liquified Gases, and also High Pressure to 25 BarG @ 50 ºC.
Double Yellow ST Band and Blue / Double Yellow HNBR Band - Steel mesh reinforced and with
Fire / Flame Resistance Type Approval [800 ºC for 30 minutes].
Model 51 Yellow/Blue Band rated up to +120 ºC ; Model 51 Lilac Band for Chemicals rated up to +150 ºC.
Distributor :
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
www.interflex.co.uk
