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4 DESCRIPTION
4.1
Identification of the product
The pulsation damper and pulsation damper hose can be identified by the contents of the
identification plate on the pulsation damper housing and the hose label.
The identification plate of the pulsation damper contains the following information, relevant for
identification:
A. Type
B. Serial number
C. Identification number of Notified
Body
D. Year of manufacture
The hose label on the pulsation damper hose contains following information:
A. Re-order number
B. Internal diameter
C. Type of material of inner liner
D. Maximum permissible working pressure
E. Production code
4.2
Operation of the pulsation damper
The Bredel pulsation damper reduces the pulses created in the discharge line by the hose pump. This
is achieved by means of a thick-walled, reinforced rubber hose which is mounted in a carbon steel,
cylindrical pressure vessel. The hose is surrounded by compressed gas (air or nitrogen).
When a pressing shoe leaves the pump hose, while rotating , instantly the volume in the discharge line
will increase with the volume of the pump hose now released by the pressing shoe. This will result in
a momentary deceleration of the fluid which results in a pressure drop in the discharge line.
