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Type D: For other types of taps (with straight spout)
Metal ring with 4 screws (Installable only on taps with
spout diameter below 25 mm).
Type C: For taps with a foaming cap (inner threaded)
White colour for KVK taps.
Blue colour for Grohe taps.
Use Type D
15 mm or longer
Diameter of less
than 25 mm
KVK tap
Grohe tap
Use Type C
Preparation before use