CONTAINER FILLING SYSTEM

A filler unit comprising: a container filling valve (50), the filling valve including a shuttle (200) movable between an open position corresponding to a first flow rate through the filling valve, a closed position corresponding to no flow through the filling valve, and a low flow setpoint position corresponding to a non-zero second flow rate through the filling valve, wherein the second flow rate is less the first flow rate; an actuator (80) comprising a first chamber (552, 553) and a barrier (551) coupled to the shuttle, wherein the barrier is movable to alternately increase a volume of the first chamber or to decrease the volume of the first chamber; a flow path from the first chamber; and a control valve (557, 557') positioned in the flow path and having a blocked position in which fluid flow is blocked and an unblocked position in which fluid flow is unblocked.