What is the Rule for relief from a Sprinkler Head?
The sprinkler head is classed as an abnormal course condition.
Interference exists when any one of these is true:
- Your ball touches or is in or on an abnormal course condition,
- An abnormal course condition physically interferes with your area of intended stance or area of intended swing, or
- Only when your ball is on the putting green, an abnormal course condition on or off the putting green intervenes on your line of play.
So if you are not on the green and a Sprinkler Head is on the line of your intended shot you are not allowed relief
You will find the full rule definition here R&A Rule 16.1a