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This Adjustable Pressure Switch offers a solution for triggering staged fuel pump(s) based on positive boost pressure. This normally open (N.O.) switch features a 3-15psi adjustable set point to match any application. The stainless steel body features a 1/8″ NPT male port. Connector and pins are included (assembly required). This switch ONLY activates with positive pressure.
INSTALLATION NOTES:
DO NOT route the main power for a fuel pump through this switch. Use the switch to trigger a relay. This switch may be used to trigger any device, not just a fuel pump, as long as the current demand is less than 0.5 Amp. Review the installation instructions in the above link prior to purchasing. The switch DOES NOT come pre-set to any particular pressure, it MUST be calibrated using the method outlined in the installation instructions. This switch may also be used in other fluid applications (oil, fuel, coolant, etc). DO NOT use with brake fluid.
NOTE: the relay “trigger” signal that goes through the adjustable pressure switch can a ground or 12V signal as long as the other end of the low current relay coil wire is connected to an opposing source.
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