Rubber Bellows "Single Sphere" type:

Moulded Rubber Bellows are designed to compensate for misalignment, neutralise movement and reduce noise and vibration in pipelines. They effectively dampen the transmission of sound and vibration from plant items in building service installations and can be used for many applications including water, oils, chemicals, gases and in the food industry depending upon the grade of rubber employed. (Please refer to the charts below and ISL technical for further advice).

They are available from 25mm to 600mm n.b., (1” to 24” n.b.), and generically come complete with zinc plated carbon steel swivel backing flanges. They can be drilled to suit any table or special drillings can be supplied both tied and untied.

 

Standard Construction:

• Textile cord reinforced rubber body and collar
• Single arch
• Zinc plated carbon steel flanges

 

Supply options:

• Different lengths
• Different grades of rubber selected for specific application / operating conditions**
• Tied or Untied flanges
• Flanges drilled to any table / special requirement
• Carbon steel or stainless steel flanges
• Vacuum rings fitted when used on negative pressure applications

 

Material Colour Chart:

Colour	Materials	Primary Application	Op Temp (Max)
Red	EPDM	Hot water, heating & ventilation, weak acid/alkali	+90
Double Red	EPDM	High temp hot water, heating & ventilation, weak acid/alkali	+120
Yellow	Nitrile	Oil & Gas transportation, refineries	+80
Green	Hypalon	Water, good chemical resistant qualities for acids	+90
Purple	Viton	High temp applications, petroleum based product transportation	+180
White	Food Grade Nitrile	Food stuffs, potable water	+80
Blue	Butyl HT	High temperature	+130

 

Movement Data (Standard EPDM Construction)**

Nominal Bore	Standard Length	Working Pressure	Axial Compression	Movements Elongation	Lateral(+/-)	Angular(+/-)
(mm)	(mm)	(Bar)	(mm)	(mm)	(mm)	(Deg)
25	130	16	30	20	30	30
32	130	16	30	20	30	30
40	130	16	30	20	30	30
50	130	16	30	20	30	30
65	130	16	30	20	30	30
80	130	16	30	20	30	30
100	130	16	30	20	30	20
125	130	16	30	20	30	20
150	130	16	30	20	30	20
200	130	16	25	30	30	10
250	130	16	10	30	15	5
300	130	16	10	30	15	5
350	200	16	40	35	30	8
400	200	16	40	35	30	8
450	200	16	40	35	30	8
500	200	10	40	35	30	8
600	200	10	40	35	30	8

** Please contact ISL Technical department for data relating to other Bellows constructions