Hand-operated sealing pistol has pressure device with first movement in which line between inlet and outlet of relief valve is closed, second movement for activating motor regulating device

摘要

The sealing pistol has a container (1) for a cartridge (2) containing sealant with a movable piston and a dispensing nozzle, a power source, an electric motor (11) for operating a pneumatic pump (13) for dispensing sealant, a first connection arrangement between the rear volume and the inlet of a relief valve (25) on a side wall of the cylinder and a pressure device. The pressure device is connected to the valve piston (28) and moves the piston against the valve outlet and over the relief valve inlet during a first movement with the motor off, whereby the line between the inlet and outlet of the relief valve is closed. In a second movement the pressure device activates a regulating arrangement (23) for regulating the motor