NOS Fuel Pressure Sensor nitrous system, shut off switch 15750NOS; Fuel Pressure Safety Switch, 4 to 7psi Fuel Pressure Sensor Model or Series: Fuel Pressure Safety Switch Normally Open Adjustable 4 to 7 psi Inlet Thread: 1/8 in. NPT Max Pressure Setting: 7 psi Max Amp Load: 8 Amp Preset Pressure: 4 psi Quantity: Sold as Each Heavy-Duty Specialty Switches Shut off nitrous system at low fuel pressure. Fuel Pressure Safety Switch, normally open. You don't want to be blasting nitrous into the engine if fuel pressure is below what is required to supply the required extra fuel
