Rotary Vial Washer
The rotary-type vial washers offers many advantages over in-line type vial washers.
Cleanliness
With chain-based drive mechanisms in-line washers inherently create particles. PennTech's rotary washers have
no moving parts in the washing chamber, except for the central turret.
Functionality
Each vial size has a dedicated set of change parts, ensuring that each vial, no matter what its size, is optimally
exposed to internal and external water/air spraying. In comparison the vial holders (buckets) used by in-line washers
compromise the effectiveness of the washing function.
Visibility
Due to the transparent polycarbonate cover over the washing chamber, the total washing function can be visually inspected.
Compact size
By its nature the rotary design fits into a smaller footprint. The RW-800, for example, occupies just 2.7m2
(1.9m x 1.4m).
Single file container out feed
The cleaned vials leave the washer in a single-file fashion. This means that the vials are immediately
available for trayloading or for transporting to the filling machine in the clean room. In addition, when continuous
sterilizing is required (using a sterilization tunnel), the vials can be pushed onto the tunnel conveyor in a full
loading pattern.With in-line vial washers the loading pattern is less than optimum, resulting in “cold
spots” in the sterilization tunnel.
Stationary Nozzles versus Penetrating Nozzles
Many older types of washer utilise penetrating nozzles that move in and out of the vials. Everything that moves
generates particulates, so this concept is in violation with the function of a vial washer; i.e., to remove particulates.
Tests have shown that stationary nozzles are just as effective as penetrating nozzles. The reason for this is due
to the high velocity of the waterjet exiting the spray pipe; the stationary nozzle maintains its convergent nature
as if an invisible spray pipe is surrounding the waterjet. Even small 2 ml vials with a 13 mm neck finish are
effectively cleaned.
Penetrating nozzles are also at risk of hitting the neck finish of the vial and bending. Bent nozzles are not only
ineffective, they can jeopardize the validation of the batch.
To download a pdf with more information click on one of the links below.
RW - 500
RW - 800
RW - 1150
Table of Rotary Vial Washer Output
New! Video of the RW-500 in operation
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