I need to turn off the gas to to the house to do a repair of an appliance without its own valve. It seems stuck as I cannot turn it with a crescent wrench.
After another attempt, I succeeded. I reoriented the crescent wrench in the opposite direction (concave side away from me) and pulled towards me. I believe this gave me more leverage is it was significantly easier to turn.
Other ideas that I ended up not trying but may help as well:
- Getting an extra large crescent wrench (expensive).
- Getting a tool with linear slot that fits over the valve's knob which appears to be created for opening valves.
- (Rob's suggestion) As the valve is located outdoors, there was a bit of rust or dirt that can add friction to the valve. Using PB Blaster or Liquid Wrench can help loosen things up. (NB: please check if this is safe)