i have an apollo heating system.i noticed a small drip coming from the pipe which is connected to the pressur releif valve.i called service and they said it was not dangerous but they would get a replacement PRV.the problem is i need to be out of the country for 10 days;and because of the terrible weather the service company is over whelmed and can not even return my calls so i could tell them of my situation and what might be done(call my daughter) .my question is what are the consequences of waiting until i returnto replace the PRV?

thank you.