Seismic Gas Shutoff Valves

CALIFORNIA (formerly known as Koso) Seismic Gas Shutoff Valves are installed throughout the U.S. and in many countries at risk from earthquakes. They performed well during the 1994 Northridge earthquake. CALIFORNIA Valves have a simple operation principle, remain closed when tilted or bumped, and must be manually reset, which enables safety inspections for leaks and other hazards to be done before gas service is restored. CALIFORNIA Valves have excellent flow characteristics, and may be selected based on the size of a properly sized houseline. CALIFORNIA Valves installed upstream of multiple houselines should be selected based on the sum of the areas of each houseline. CALIFORNIA Valves have a visual openclosed indicator and pressure ratings up to 60 psi. For all sizes, from ¾" through 8", we supply models designed for horizontal flow, vertical flow from the bottom in, or vertical flow from the top in. Valve ends are threaded for ¾" through 1-12" models, threaded or flanged for 2" through 4" models, and flanged for 6" and 8" models. Optional devices available at the time of order for any model of CALIFORNIA Valve can enable remote actuation or remote position monitoring.