4.5 Hose
General
A Extruded or wrapped outer layer made of natural rubber C Extruded or wrapped inner liner
B Nylon reinforcement layers
The hose liner material should be chemically resistant to the process fluid being pumped. For each
pump model various hose types are available. Choose the most appropriate for your application.
The material of the inner liner of the hose determines the hose type. Each hose type is marked by a
unique colour code.
Hose type Material Colour code
NR Metering and NR Transfer Natural rubber
None
Purple
Purple/Green
NBR Nitrile rubber Yellow
NBR for food* Nitrile rubber Yellow
F-NBR for food (white inner liner)* Nitrile rubber Yellow
EPDM EPDM Red
CSM CSM Blue
*See also
Dedicated manuals:
NBR hoses for food contact, part number 28-29211330
F-NBR hoses for food contact, part number 28-29211322
24 m-bredel-25-32-en-05
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