During a gas pressure test, appliances and their regulators must be protected. What is the correct way to include or exclude appliances during a 10 psi test?

Giải thích

Appliance regulators and controls are not rated for elevated test pressures, so appliances must be isolated by closing the individual appliance shutoff and disconnecting the appliance, or valving it off, before the piping is pressurized. Testing through an appliance can rupture its regulator diaphragm. Only the fixed piping is subjected to the test pressure.