Control for hydraulically raised and lowered bath seat

摘要

The valve (1) has a movable dual piston (12) for connecting a pressurised water-inlet (2) to an elevating water connecting (3), and the elevating water connection to a water outlet (4). The dual piston is controlled by a spring-loaded rocking lever (7) attached to a Bowden wire (6). The valve has a housing (10) with cylindrical through-hole (11) in which the dual piston is slide mounted. One end of the piston forms the water outlet, and the other end has the Bowden wire attached. Both ends of a piston rod have a valve piston (13, 14). Each end of the water outflow side piston (13) has a peripheral groove (7, 18) with sealing ring (19, 20).