(57) Dispenser for foaming plastics, such as polyurethane foam, with a foam channel (1)
that is provided at one end with an adapter (2) for connecting a pressurised container
(3) containing the foaming plastic and has an outlet opening (4) at the other end,
as well as a metering mechanism (5) for regulating the quantity of foam that passes
through the channel, wherein the foam channel (1) extending from the adapter (2) to
the outlet opening (4) is made straight and wherein the metering mechanism (5) has
a valve, especially a ball valve, in the straight foam channel (1), which valve can
move between a first fully closed position and a second fully open position.
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