WAC 296-307-20515. Pneumatic powered tools and hose

(1) The operating trigger on portable pneumatic powered tools must be located to minimize the possibility of accidental operation and arranged to close the air inlet valve automatically when the operator removes pressure. (2) A tool retainer must be installed on each tool that would otherwise be ejected from the hose. (3) Hose and hose connections used for conducting compressed air to utilization equipment must be designed for the pressure and service to which they are subjected.