RED BAND

RUBBER BELLOWS EXPANSION JOINTS

TEMPERATURE RATING 100 ºC

(212 ºF)

APPROVED FOR POTABLE WATER USE

The Red 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 Red Band are constructed with temperature resistant polyamide fabric for permanent use in installations for

many years use with hot and cold water, drinking water, water with water treatment additives, seawater, clean air,

weak acids and alkalis, salt solutions, technical alcohols, esters & ketones. Temperature range is -40 to +100 ºC

(+212 ºF), with brief short term rating up to +120 ºC (+248 ºF).

The Red Band are used in building technology, plant engineering, water & wastewater works, engine construction,

shipbuilding, HVAC, and petrochemical, industrial and solar & wind energy engineering.

The Red Band are manufactured within the European Union, and are equivalents to, and interchangeable with,

Elaflex ERV-R Red Band, Trelleborg Teguflex C, P & W Red Band, and Stenflex A, R & AG expansion joints.

Construction :

Liner : Butyl (IIR) / EPDM.

Reinforcement : Polyamide.

Cover : EPDM, with One Red Stripe (Model 49 - One Blue Stripe).

Resistant to Weather, Aging & Ozone.

Electrically Dissipative Surface Area.

Not Suitable for Oils, Fuels, or Water containing Oils.

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 @ 100 ºC

DN400 & DN500 : 16 BarG @ 50 ºC 16 BarG @ 70 ºC 10 BarG @ 100 ºC

All Other Models : DN20 to DN200 : 16 BarG @ 50 ºC 12 BarG @ 70 ºC 10 BarG @ 100 ºC

Models 50 & 55 : DN250 : 16 BarG @ 50 ºC 12 BarG @ 70 ºC 10 BarG @ 100 ºC

Model 50 : DN300 to DN400 : 16 BarG @ 50 ºC 12 BarG @ 70 ºC 10 BarG @ 100 ºC

Model 55 : DN300 to DN400 : 10 BarG @ 50 ºC 10 BarG @ 70 ºC 10 BarG @ 100 ºC

Model 55SO : DN250 & DN300 : 10 BarG @ 50 ºC 10 BarG @ 70 ºC 10 BarG @ 100 ºC

Models 50 & 55 : DN450 to DN1000 : 10 BarG @ 50 ºC 8 BarG @ 70 ºC 6 BarG @ 100 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, and are approved for

Potable (Drinking) Water use by WRAS (UK), ACS (France), & ELL (Germany) (depending on bore size & ends).

Lengths :

Bore DN / NB Lengths (mm)

mm inch

Model

55SO

Model 46

Female

Model 46

Male

Model

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 :

Double Red SP Band - PEEK Reinforced, rated up to +130 ºC ; DIN 4809 approved.

Red Spot - Economy version for lower pressure requirements : 10 BarG @ 50 ºC ; 6 BarG @ 90 ºC.

Model 51 Red/Blue Band rated up to +130 ºC ; Model 51 Lilac Band rated up to +150 ºC.

Model 39 Lilac Band rated up to +180 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