4" Earthquake Shut-off Valves
Pacific Seismic Products is the world's leading supplier of earthquake-activated automatic gas shut-off valves. Available in sizes 3/4" to 8" with flange and NPT connections for both horizontal and vertical applications.
Horizontal: 316, 316F
Vertical (Top to Bottom): VT316, VT316F
Vertical (Bottom to Top): VB316, VB316F