Mechanical Code…
Pairs of mating stop valves valving off sections of refrigeration systems and arranged so that these sections may be joined before opening these valves or separated after closing them.
(Uniform Mechanical Code® 224.0)
Building Trades Resource
Mechanical Code…
Pairs of mating stop valves valving off sections of refrigeration systems and arranged so that these sections may be joined before opening these valves or separated after closing them.
(Uniform Mechanical Code® 224.0)