Dimension One D 1 Repl. Flow Switch, [3 4" S x 3 4" B] (1710 130) ametek That keeps the repair efficient That keeps the repair efficient while improving one of the most noticeable parts of the system’s everyday performance A trap and pump body forms a major structural part of the wet end side of the pump A properly selected replacement helps restore intended flow sensing and contributes to cleaner service The D 1 compatibility and mixed slip to barb connection design give this part practical value because flow switch replacements work best when the new component matches both the plumbing layout and the control relationship of the original assembly