When you say small pipe are you talking about the drain off, usually brass about inch long? If so it just needs tightening via the square nut on the end. If not give a little more information.
Should be but keep an eye on it as the seal could have gone. Also if you have a loop feed system you need to check the pressure as you have been losing water out of your system so you need to top it up should read between 1 to 2 on the meter.
Hope this helps I am by no means a professional but have come across a simular thing myself.
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