F3S WC flushing valve DN 20, for wall-mounted toilet bowls, fitting group 1, with remote control for concealed mounting. Especially suitable for facilities at risk of vandalism. Self-closing upper component for remote operation, hydraulically controlled, piston-free design, automatic and backlash-free closing. Automatic flush flow regulation and adjustable flush water volume. Flush valve complete with flush pipe connection and screw connection. All-metal construction, visible parts polished chromium-plated. Stainless steel cover plate 190 x 245 x 2 mm for invisible mounting via threaded rods, up to a wall thickness of 50 to 500 mm, pre-mounted push-button actuation, flush-mounted box. Hydraulic control lines and empty conduit (2 m) and mounting material. Connection and maintenance via service room.