Description Bredel 25 Bredel 32
Initial setup torque, steel inserts [Nm] 20 20
Initial setup distance ΔD/2 * [mm] 0 0
Minimum allowable clamp outer diameter (OD) [mm] 50 57
Approximate maximum distance ΔD/2 * [mm] 2 2.5
* ΔD = difference of hose outer diameter and clamp outer diameter
How to tighten hose clamps in combination with plastic inserts
Bredel pumps are supplied with one clamp per hose end as standard. The clamp is positioned close to
the pump side to assure a sanitary connection between hose and insert. In case of plastic inserts, the
amount of clamping must be limited to avoid deformation of the plastic insert which would lead to
leakage instead.
As a first step apply the initial setup torque value as advised in the table below. Then carefully
increase the torque and keeping the ΔD/2 within the range specified. For operating pressures above 8
bar it is strongly recommended to place a second clamp close to the flange. This clamp can be
tightened to seal up to 16 bar.
m-bredel-25-32-en-05 55
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