Abstract: A dampener device extending along a vertical axis for use with an industrial process having a first conduit through which process fluid flows along with a second conduit wherein the second conduit extends away from the first conduit generally along the vertical axis. The dampener also includes a third conduit having that is connected to the first conduit, wherein the third conduit extends away from the first conduit generally along the vertical axis in opposing relationship to the second conduit. The dampener device design further includes a dampener valve positioned the first conduit and a fourth conduit extending in opposing relation to the first conduit between the second and third conduits.

Abstract: A dampener device extending along a vertical axis for use with an industrial process having a first conduit through which process fluid flows along with a second conduit wherein the second conduit extends away from the first conduit generally along the vertical axis. The dampener also includes a third conduit having that is connected to the first conduit, wherein the third conduit extends away from the first conduit generally along the vertical axis in opposing relationship to the second conduit. The dampener device design further includes a dampener valve positioned the first conduit and a fourth conduit extending in opposing relation to the first conduit between the second and third conduits.

Abstract: A method for washing the interior surfaces of tanks with a washing head is provided with a nozzle (28) which ejects a liquid beam and which is rotatable about a first (11) and a second (34) axis whereby the nozzle is allowed to cover a two-dimensional solid angle. The washing head is controlled in such a manner that for an entire revolution about the first axis, the nozzle performs a small rotation about the second axis, and that over a number of revolutions about the first axis the nozzle follows a path which covers the entire a solid angle. The drive mechanism for rotating the washing head is arranged externally of the conduits carrying washing liquid in order to avoid loss of washing pressure and wear of the drive mechanism. According to the invention the movement of the nozzle along the defined path is monitored and the result of the monitoring is utilised to control the energy density of the beam in order that it is reduced when the beam is directed at the zones which do not require the maximum energy.