Dwyer Instruments Inc

Dwyer Instruments Inc

P4 Series Manual

Piston-Type Flow SwitchesP4 SeriesNotes * Wrench flats provide for proper assembly** Accepts 1/2" I.D. flexible hoseInstallation . . .Unless otherwise specified, the units are factory-calibrated with water mounting in vertical position, with lead wiresup. Observe proper direction of liquid flow, as marked "IN" and "OUT" on housing.Be careful ...