Section R. 408.11244 - Station outletsRule 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.Click Here To View Image
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 |
Mich. Admin. Code R. 408.11244