The 658 Series is a hi-rel lightweight, aluminum constructed, dual differential pressure switch made for use in the Aerospace industry. Dual-spring design Fully enclosed design Switch ranges from 40 to 500 PSIG Factory set, temper proof Can achieve both low set-point & high proof pressure due to one piece fully supported diaphragm. Click the button below to see the datasheet: VEP 658 Series Enquire Now