Provide operating control, automatic or manual reset limit protection for pressure systems up to 300 psi (2068 kPa).
- 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.