PSF101 Ordering Guide - With exclusive DesignFlex™ features, you can choose from the options below to custom-design a switch ordering number with features to suit your needs.
PSF101 Series Number Low Port/ Housing Option Number High Port/ Cover Option Number Diaphragm Option Number Three Digit Pressure Set Point Option Number	Diaphragm Options 1 Polyurethane (Standard)   2 Teflon (optional) Example: 8111-020 = PSF101 series pressure switch with • Low Port/Housing, .156" Diameter, Smooth Port with Mounting Lugs • High Port/Cover, .156" Diameter, Smooth Port • Polyurethane Diaphragm. Pressure Set Point is factory-set at 2" H2O
Low Port/Housing Options High Port/Cover Options Pressure Set Point Options For higher Pressure Set Point, consult factory. Option No. In. H2O mbar PSI 005* .1 - .5 .25 - 1.25 .004 - .018 010 1.0 2.49 .036 015 1.5 3.73 .054 020 2.0 4.97 .072 030 3.0 7.46 .108 040 4.0 9.95 .144 060 6.0 14.92 .217 080 8.0 19.89 .289 100 10.0 24.86 .361 120 12.0 29.84 .433 150 15.0 37.30 .541 200 20.0 49.73 .722 300 30.0 74.59 1.083 400 40.0 99.46 1.444 500 50.0 124.32 1.804 *Teflon Only Close Ordering Guide