Fuel & Coolant Pressure Warning Switches
These low pressure warning switches are ideal for fuel or coolant use, where pressures above 2-7 psi are within the normal range. If you need a low pressure warning switch with a higher activation pressure, check out our selection of Oil Pressure Warning Switches. Any of these switches are perfectly suited for use with our Compact Panel-Mount Warning Lights.
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This 3psi, low coolant pressure switch is a great way to detect loss of coolant. It will turn on a warning light as soon as the coolant pressure drops below 3 psi. Installs in a 1/8 NPT female port.