Change your brake line

[Water Warrior 2]

No injury thank goodness. Luckily the pump was on the other side of a concrete divider wall when I closed the valve. No shrapnal hit me but a lot of water soaked me completely as it sprayed around.
Water hammers can cost a lot of grief sometimes. One of my co-workers did a no-no one night and fired up to really big pumps in the water distribution system. Talk about a pressure spike. He launched 38 fire hydrants into the sky. Main line breaks and a very annoyed repair crew. Last time I heard he was selling real estate.