dry sprinkler

短语

词形变化

dry sprinklers 复数 dry sprinklers

释义与例句

n.
  1. 1.

    A sprinkler (fire protection device) having pressurized air in the distribution pipes until a heat-activated sprinkler head opens and releases the stored air pressure, which opens the water valve.

    A dry sprinkler may be used where there is a risk of water freezing solid within the pipes.