check for leaks before you open the valve
Put the soap on first, then open valve. Are you having a reading comprehension problem or being pedantic?
Did you read what you wrote or you trying to be an asshole? You literally wrote, check for leaks BEFORE you open the valve.
You’re having a reading comprehension problem.
Put the soap on to check for leaks before turning tap on.
This implies the soap is to check for leaks
All I said was you need to turn it on to see if it leaks. If you’re explaining how to check for a gas leak, It’s a pretty important step. By reading his comment, if OP knows nothing about it, which is clear by their asking, they could just put soap on it, see no bubbles, and then turn it on and walk away…