Watson-Marlow Bredel 265 - Manual (Page 19)

DESCRIPTION
19
EPDM*
Good chemical resistance especially to concentrated
acids, ketones, and alcohols.
Max. liquid temperature 90 °C (195 °F).
Min. temperature -10 °C (15 °F).
Consult Bredel technical services for details on higher
temperature operation, up to 90 °C (195 °F) with
EPDM.
CSM*
Good chemical resistance for strong oxidizing products
like concentrated acids and oxygen generating
substances.
Max. liquid temperature 80 °C (175 °F).
Min. temperature -10 °C (15 °F)
Consult Bredel technical services for RPM limitations
when using CSM.
The Bredel pump hoses have been carefully machined,
therefore there are minimum tolerances in wall
thickness. This is very important to guarantee the
correct compression of the pump hose, because:
•
When the compression is too high, it creates a
load on the pump and pump hose that is too
high, which may result in a reduction of the life
of the pump hose and bearings.
•
When the compression is too low this will result
in high velocity backflow (slip). Backflow results
in a reduction of pump performance, hydraulic
efficiency, and negatively impact the life of the
pump hose.
* Consult your Bredel representative for
more detailed information about the chemi-
cal and temperature resistance of pump
hoses.