The shutting off and steerage of water inlets and outlets in municipal or industrial pipe, sewage and tank systems.
PASSAVANT® shut-off devices play a central role in the shutting-off, regulating and controlling of water and effluent flows in drainage systems. Not only do the shut-off devices help protect against floods and surface waters, they also perform safety relevant functions serving to protect people, buildings and infrastructure in endangered areas. At Bilfinger Water Technologies we use the very latest technology, from planning to manufacture, assembly, commissioning and customer service to ensure that our products satisfy – and in many cases exceed – the required standards of AWWA C561/DIN 19569-4, for equivalent hydraulic steel shut-off devices.
Depending on the particular design, the various 3 and 4 side shut-off devices are lowered into the water flow by means of guiding or holding devices. The soft seals (EPDM, NBR or neoprene) guarantee water tightness in both directions of flow. Double lip seals, profile seals or double bulb seals are used depending on the type of device and specific requirements.