The Tour and Andersson differential pressure controller is designed for use in variable-flow HVAC systems. The differential pressure controller gives engineers and balancing contractors increased control over temperatures, as well as reduced noise in the system and simplified balancing, commissioning, and maintenance procedures. The differential pressure controller is available in sizes 1/2-2 inches (15-50 mm) for the Series 793 with threaded end connections and in sizes 2-4 inches (65-100 mm) for the Series 794 with ANSI Class 150 flanged end connections.

Victaulic, 4901 Kesselersville Rd., Easton, PA 18040; 800-742-5842 or 610-559-3300;