Alco Controls, Inc. FF444-V2 DAF Pressure Switch

The Alco FF444-V2 DAF Pressure Switch is an industrial pressure-control device that automatically starts and stops pumps and compressors based on sensed system pressure. It features dual adjustable setpoints: the upper switch ranges from 3 to 58 psi, the lower from 1 to 54 psi, with a minimum differential of 2 psi, and a standard setting of 14/44 psi. The integrity of the unit is supported by UL/CSA approvals and an IP65 enclosure, with a pressure connection of 1/4 in. NPTF (F) for reliable coupling to common piping. Rated for up to 348 psi maximum operating pressure and 580 psi maximum test pressure, the FF444-V2-DAF is cataloged under part number 0 097 309 and is part of Alco's FF4 family (now Emerson Copeland) of industrial pressure controls. Typical applications include motor control for pumps, jockey pumps, and compressed-air or oil supply systems in commercial, industrial, and water-management settings.