What does the 3-8 PSI spring range indicate

This unit features a 0 to 5" WC unidirectional pressure range and provides a precise 4 to 20 mA output signal

Broad Compatibility: Supports a wide range of Carrier and Bryant draft inducer housing models

Engineered for the MKC-2 solenoid series

For 15 psi steam service

Hubbell Industrial Controls 69WR3 Pressure Switch 319852-301 What does the 3-8 PSIThe Hubbell Industrial Controls 69WR3 Pressure Switch is a rugged, reverse acting water pressure switch engineered for reliable performance in demanding industrial and commercial water systems. This 2 pole pressure switch features a 10 PSI cut in and 5 PSI cut out factory setting, specifically designed to open on rising pressure and close on falling pressure. With an adjustable differential range of 6 15 PSI, this unit allows for precise field