establishment of the alternative developed by one or more forms of plastics with a liquid or a gas under pressure.

摘要

Device for the selective admission of a liquid or a pressurised gas into one or more moulds (1) for plastics processing, with at least one pair of three-way valve elements (5, 6) positively coupled to one another, a connection for the liquid supply and a compressed gas connection and an outlet, connected to a feed (2) of at least one mould, on the first three-way valve element, an inlet, connected to a discharge (3) of at least one mould, a connection for a liquid drain and an outlet, opening into a catch vessel, for liquid and compressed gas, of the second three-way valve element and a channel arrangement (25) in the valve housing and the movable shut-off part of the two coupled three-way valve elements for admitting liquid to the mould in a first position, admitting compressed air in a second position, and blocking all connections. IMAGE