Earthquake Valves

Koso Earthquake Valves

Return to Earthquake ValvesThese valves are earthquake-sensitive gas shut-off valves. Koso earthquake valves are intended to close in the event of an earthquake to prevent gas flow into a structure where earthquake damage may have occurred. This will greatly reduce potential risk of explosion or fire due to loss of gas line integrity or uncontrolled flow of gas after a major earthquake.

In event of a damaging earthquake, where gas lines can break, valve automatically shuts the flow off thus, Protecting your family and property by greatly reducing the potential risk of explosion or fire due to loss of gas line integrity or uncontrolled flow of gas.

Koso Earthquake Valves

  • No magnets used to attract debris and interfere with operation.
  • No internal or external source of electrical power needed.
  • Ball used for actuation NOT! for sealing of flow line.
  • Easy Manual reset!

All rubber used in unit is the same as used by gas companies as their regulators. This technology has been used for many years without repercussions.

Listed by UL & Certified by CA State Architect in accordance with ASCE 25-97

Easy manual reset, 0.05 to 60 PSI, and 30 yr warranty makes this the valve of choice for both residential and commercial.

Koso Earthquake Valves manufactured in USA since 1978.

Koso Earthquake Valve Links

Valve Specifications Click Model For Specification Sheet

Model    
Size   
Pressures
Pics

    Residential

300 / 301 / 302 Horizontal
3/4″ / 1″ / 1-1/4″
7 psi
VT300 / VT301 / VT302
Vertical Top
VB300 / VB301
VB302
Vertical Bottom
3/4″ / 1″ / 1-1/4″
7 psi
    Commercial
302 / 303 Horizontal
1-1/4″ / 1-1/2″
7 psi
VT302 / VT303 Vertical Top
VB302 / VB303 Vertical Bottom
1-1/4″ / 1-1/2″ 7 psi
310 / 311 Horizontal
3/4″ / 1″ 60 psi
VT310 / VT311 Vertical Top
VB310 / VB311 Vertical Bottom
3/4″ / 1″ 60 psi
VT312 / VT313 Horizontal
VB312 / VB313
Horizontal
1-1/4″ / 1-1/2″ 60 psi
312 / 313
Vertical
1-1/4″ / 1-1/2″ 60 psi
    Industrial
314 / 318 / 315 / 316 Horizontal 2″ / 2-1/2″ / 3″ / 4″ 60 psi
314F / 318F / 315F / 316F
Flanged Horizontal
2″ / 2-1/2″ / 3″ / 4″ 60 psi
VT314 / VT318 / VT315 / VT316 Vertical Top
VB314 / VB318 / VB315 / VB316 Vertical Bottom
2″ / 2-1/2″ / 3″ / 4″ 60 psi
VT314F / VT318F / VT315F / VT316F Flanged Vertical Top
VB314F / VB318F / VB315F / VB316F Flanged Vertical Bottom
2″ / 2-1/2″ / 3″ / 4″ 60 psi
317F
Horizontal
6″ 60 psi
VT317F
Vertical Top

VB317F
Vertical Bottom
6″ 60 psi
319F
Horizontal
8″ 60 psi
VT319F
Vertical Top

VB319F
Vertical Bottom
8″ 60 psi
    Special Products
400 Three Way
501 Remote Actuator
510 Electrical Switch
    General Information
General Info