The Delta Controls Model 624 is a highly reliabletarget actuated flow switch whose body fits intoand becomes part of the pipeline. It is equippedwith a full swing target and has an open bore matching that of the pipeline. The 624 has a flatblade type target that rotates 90° in response toincreasing flow rate. At the precalibrated set point,the switch actuates. The target moves until it isflush against the inside of the pipeline wall. Thebody bore is then unobstructed and the flow isunrestricted. Flow velocities may be in excess of 50 fps(15m/s).