Dual pressure switches manufactured by Danfoss are designed for use as a pump guard to control and protect supply water pumps. Switch specifications including pressure differential left side of .70-4 bar and differential pressure right side of 1 bar. The switches also feature cable entry for 6mm - 14mm cables.
Dwyer Instruments Inc. designs and manufactures single and dual pressure switches that feature repetitive accuracy within plus or minus 1 percent. The switches feature diaphragm-sealed leak proof construction.