Honeywell Pressuretrol Main Scale L404F1367, Less Siphon, 1-8 PSI Main

Features provide operating control with automatic limit protection for pressure systems up to 300 psi (2068 kpa) use with steam, air, noncombustible gases, or fluids non-corrosive to pressure sensing element models have snap-acting switching to open or close a circuit on pressure rise have adjustable differentials adjustments are made by screws on top of case mount using 1/4 inch -18 npt internal pipe threads or surface mount through base of case ground screw terminal.