Maretron Pressure Transducer 0 to 50 PSIPressure Transducer 0 to 50 PSI All Maretron pressure transducer assemblies are equipped with a 1 4 NPT male threaded fitting. Install the pressure transducer to a NPT female fitting on the system or tank to be monitored with a maximum torque of 150 in lbs (16. 95 Nm). If you are monitoring a system where pressure spikes or transients will occur, or where the pressure will exceed the maximum pressure rating of the pressure transducer, install a