Seismic Valves

Seismic Valves

Pacific Seismic Products is the world’s leading manufacturer of earthquake/seismically actuated gas shutoff valves. The California Valve, formerly known as the Koso Valve, is proudly Made In America in Lancaster, CA.



High and Low Pressure Threaded Seismic Valves

Low Pressure Threaded Valves (7 PSIG Max)

3/4″ 300

1″ 301

1-1/4″ 302

1-1/2″ 303

Horizontal Data Sheet

Vertical Upflow Data Sheet

Vertical Downflow Data Sheet

High and Low Pressure Threaded Seismic Valves

High Pressure Threaded Valves (60 PSIG Max)

3/4″ 310

1″ 311

1-1/4″ 312

1-1/2″ 313

2″ 314

2-1/2″ 318

3″ 315

4″ 315

Horizontal Data Sheet

Vertical Upflow Data Sheet

Vertical Downflow Datasheet

High Pressure Flanged Seismic Valves

High Pressure Flanged Valves (60 PSIG Max)

2″ 314F

2-1/2″ 318F

3″ 315F

4″ 316F

6″ 317F

8″ 319F

Horizontal Data Sheet

Vertical Upflow Data Sheet

Vertical Downflow Datasheet