Why the emergency shut-off valve in the seismic intensity of 5 or more set it?
Japanese public construction projects in accordance with standard specifications - machinery construction of national regulations
1. Earthquake specified with the emergency shut-off valve for the electronic and mechanical
2. It is the induction and start over when 200gal shock. (200gal equivalent seismic intensity 5)
The cause home when the quake occurred 5 power, gas, water supply damage!