Abstract: A shut-off valve system operative to shut-off flow through a pipe or other conduit in response to one or more fault conditions, including in particular high current that may cause damage to piping or other components downstream of the shut-off valve. The high current may result from a lightning strike inducing high current flow through the conduit and fluid flow components connected inline with the conduit.

Abstract: A time controlled thermostat provides the setting up or setting down of space temperature during certain selected time periods depending on whether it is controlling heating or cooling apparatus as selected by a changeover lever. The normal control temperature as determined by a temperature responsive switch is set by a first selection lever and the setback temperature set by a second selection lever, during heating operation, as selected by the changeover lever the normal temperature is selected by the second selection lever and the setup temperature by the first selection lever during cooling operation as selected by the changeover lever. Limit stops are provided for limiting the position of the first lever during heating to a maximum temperature and the position of the second lever during cooling for a minimum temperature.