Nitrous Oxide System - NOS Fuel Pressure Switch Adjustable 14-24 psi to normally open (15680NOS)NOS has a variety of switches for many applications, including activating fuel pump solenoids, nitrous,ect.; including toggle,momentary push button, micro, and safety switches both pre set or adjustable for fuel pressure. They will activate most anything else you need to control. Adjustable Fuel Pressure Safety Switches Heavy Duty Switch Controls Fuel Pressure Adjustable from 14 24psi Quantity Sold individually Adjustable Yes Minimum psi 14 Normally