R 408.11244 Station outlets.

Rule 1244. (1) A station outlet shall be equipped with a shutoff valve for each torch supplied from it, designated VF and VO in FIGURE 1, located upstream of other station outlet equipment. (2) A station outlet shall be provided backflow prevention devices, designated as SF and SO in FIGURE 1, at each station outlet, including those on a portable header, to prevent backflow, except where pipeline protection equipment, designated as PF in FIGURE 1, C is located at the station outlet. (3) A station outlet shall terminate with an approved union connection for a regulator or a hose, except that the outlet may terminate with pipe threads where a permanent connection is made, such as to a machine. (4) Each station outlet shall be equipped with a detachable seal outlet cap, secured in place, which shall seal the outlet except when a hose, regulator, or piping is attached. (5) The total volume of acetylene used per hour shall not exceed 1/7 of the total volume of the acetylene supply in the system. FIGURE 1 LEGEND: PF Protective equipment in fuel gas piping VF Fuel gas station outlet valve VO Oxygen station outlet valve SF Backflow prevention devices(s) at fuel gas station outlet SO Backflow prevention device(s) at oxygen station outlet