Sanitation equipment is required in some industries like hospitals, human waste and sewer maintenance. Steam cleaners and detergent systems require water flow to operate correctly. The pumps that force the the fluids through the system can be costly to replace and need to be protected. A simple flow switch can provide confirmation of flow or flow at a minimum acceptable volume for proper operation. For added pump protection, a dry line detector, indicator, or alarm is an ideal feature, especially for larger, expensive pumps.