|Seismic Gas Shutoff Valves,
Seismic Switches, & Valve Assemblies
Help protect lives and property from gas fires and explosions
caused by earthquakes by installing a CALIFORNIA (formerly Koso) Seismic Gas Shutoff Valve on your
structure's natural gas or vaporous propane line. CALIFORNIA Valves are UL listed, California certified, and Los Angeles
approved. Fifty four models are available in the following sizes:
3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2",
3", 4", 6", and 8"; and three orientations:
horizontal, vertical top-in, and vertical bottom-in. Properly
installed valves satisfy the regulations of Los Angeles, Santa Monica, and
West Hollywood requiring a seismic gas shutoff valve on new
construction, certain remodeled buildings, and ownership transfers;
as well as similar regulations adopted by other jurisdictions
in California, Washington, and elsewhere.
510 Seismic Switch incorporates the seismic trigger
mechanism used in CALIFORNIA Valves, and can be used to control
doors, pumps, generators, machinery, and solenoid valves or
electrical valve assemblies installed in gas or fluid lines.
400 Seismic Three-Way Valve also includes the seismic
trigger mechanism found in CALIFORNIA Valves, and is used
to control 80-psi, dry-nitrogen lines that control pneumatic
valve assemblies installed in specialty gas or fluid lines.
501 Remote Actuator is an optional factory-mounted
device that can trigger a seismic valve, seismic switch, or
seismic three-way valve when activated by a panic button,
gas sensor, or fire alarm.
We supply Electrical, Electro-pneumatic, and
Pneumatic Valve Assemblies compatible with Model 510 Seismic
Switch or Model 400 Seismic Three-Way Valve, and suitable
for use in lines carrying various gases or fluids over a wide
range of temperatures and pressures.
Model MS Monitoring Switch is an optional
factory-mounted device for any model of CALIFORNIA Valve,
which is available at the time of order. Model MS relays
an electrical signal that can be used to remotely monitor
the valve's open/closed position via a signal cable connected
to a PLC, PC, or alarm system. It does not interfere with
the valve's visual position-indicator window with the green
and red tags. Model MS uses a 24-VAC or 24-VDC current,
and relays a 250-mA current that can indicate whether the
CALIFORNIA Valve is open or closed.