I have a yard hydrant in my barn and it began dripping all the time this past summer. In fall I replaced all the internal parts with a repair kit, this includes the rubber stopper on the bottom of the long shaft-rod, and all packings. It no longer leaks or drips, but it refuses to drain down, so when the weather got cold, it froze up. Fortunately I caught it before it did any damage, and have been keeping an electric heater next to it.
I have adjusted it as the directions stated, and every adjustment between running to unable to push the shaft down. It just will not drain down. Someone said the ground may be saturated, but it's been shut off for 3 weeks since I repaired it and should have drained by now. Someone else said the drain hole may be plugged and I will have to dig it up. I keep thinking there is a way to blow that hole open with compressed air, (but how)?
Finally, I wont be digging it up till spring. Elec. heaters use a lot of energy, so I will get a heat tape. The local hardware store guy insists that I can not spiral the heat tape around the pipe. I did that on another pipe 10 years ago and it still works fine. I told him this. He said that the newer tapes can only be run in a straight line up the pipe. Now, let me ask how the hell is that going to keep the entire one inch pipe thawed in 20 below zero weather, and the "new" heat tape looks exactly like the older kind except costing 50 PERCENT more. What;s the scoop about this pipe heat tape? Yes, i DO know to never overlap it, but I have always spiralled it along a pipe. I think this guy is an idiot, but thought I'd see what you all have to say.
Thanks
Carl