Honeywell Pressuretrol Controllers, Auto recycle, 10 psi to 150 psi

Switching Action: SPST make on pressure rise Only Provide operating control, automatic or manual reset limit protection for pressure systems up to 300 psi (2068 kPa). Features: Use with steam, air, noncombustible gases, or other fluids non-corrosive to pressure sensing element. Provide dustproof, trouble-free mercury switching; L404F has snap-acting switching. Trip-free mechanism on manual reset models so the limit function of the controller cannot be defeated by jamming the reset lever. Adjustments are made by screws on top of case. Mount using 1/4 in. NPT female threads or surface mount through base of case.