PRODUCTS

Koso - The California Valve

These valves are earthquake-sensitive gas shut-off valves. They 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.

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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.

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.

Manufactured in USA since 1978.

Valve Specifications

For your convenience we have included valve specifications and literature for you to download and read or print out.  These files are in PDF format and require the software from Adobe called Acrobat Reader If you do no have this installed on your computer you may follow the link below to download this software.  

Once you downloaded and installed it, you may return back to this page and download and print any files you are interested in below. 

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 in Flow

3/4" / 1" /
1-1/4"

7 psi

VB300 / VB301 / VB302
Vertical
- Bottom in Flow

3/4" / 1" /
1-1/4"

7 psi

    Commercial

302 / 303
Horizontal

1-1/4"/1-1/2"

7 psi

VT302 / VT303
Vertical - Top in Flow
1-1/4"/1-1/2" 7 psi
VB302 / VB303
Vertical - Bottom in Flow
1-1/4"/1-1/2" 7 psi

310 / 311
Horizontal

3/4" / 1" 60 psi
VT310 / VT311
Vertical - Top in Flow
3/4" / 1" 60 psi
VB310 / VB311
Vertical - Bottom in Flow
3/4" / 1" 60 psi
312 / 313
Horizontal
1-1/4"/1-1/2" 60 psi
VT312 / VT313
Vertical - Top in Flow
1-1/4"/1-1/2" 60 psi
VB312 / VB313
Vertical - Bottom in Flow
1-1/4"/1-1/2" 60 psi
    Industrial
314 / 318 / 315 / 316
Horizontal
2" / 2-1/2" / 3" / 4" 60 psi
VT314 / VT318 / VT315 / VT316
Vertical - Top in Flow
2" / 2-1/2"  / 3" / 4" 60 psi
VB314 / VB318 / VB315 / VB316
Vertical - Bottom in Flow
2" / 2-1/2"  / 3" / 4" 60 psi
314F / 318F / 315F / 316F
Flanged Horizontal
 
2" / 2-1/2" / 3" / 4" 60 psi
VT314F / VT318F /
VT315
F
/ VT316F

Flanged Vertical - Top in Flow
2" / 2-1/2"  / 3" / 4" 60 psi
VB314F / VB318F
/ VB315F / VB316F
Flanged Vertical - Bottom in Flow
2" / 2-1/2"  / 3" / 4" 60 psi
317F
Horizontal
6" 60 psi
VT317F
Vertical - Top in Flow
6" 60 psi
VB317F
Vertical - Bottom in Flow
6" 60 psi
319F
Horizontal
8" 60 psi
VT319F
Vertical -Top in Flow
8" 60 psi
VB319F
Vertical - Bottom in Flow
8" 60 psi
    Special Products
400 Three Way ---
501 Remote Actuator ---
510 Electrical Switch ---
    General Information
General Info