are earthquake sensitive gas shut-off valves. They are intended to
the event of an earthquake to prevent gas flow into a structure
where earthquake damage may have occurred.
California seismic gas shut-off valves range in size from ¾” to 1
½”, low- or high- pressure. These valves are available in three
different configurations: Horizontal gas flow
(H), Vertical Bottom-In gas flow
and Vertical Top-In gas flow