Product Performance:Flow Rate: 12.0 GPM (maximum), 10.0 GPM (operational)Maximum Pressure: 4000 PSIMaximum Operating Temperature: 180°F (82°C)Electrical Rating: 250 VAC, 5 AmpsMax Switch Voltage: 250 VACResistance with Leads: 30 OHMElectrical Service Life: 200,000 CyclesMechanical Service Life: 10,000,000 CyclesNote: When using this flow switch in a system with a positive displacement pump, it is recommended to install a safety relief device in the appropriate locations to protect all parts of the system.Installation Instructions:Install the flow switch vertically to the output side of the unloader, with the 2 conductor lead wires exiting from the top.If your system uses a downstream chemical injector, it should be mounted on the output side of the flow switch.Service: This is a aftermarket replacement part, please confirm the compatibility and model numbers before buying. If you have any questions, please contact us through amazon message directly. We will reply within 24 hours to answer the questions.