Yes. https://terrylove.com/forums/index.php?threads/utica-boiler-leaky-valve-2.54508/ talks about a similar valve in a different location. If the leak is at the stem, try tighening the packing nut a bit. If that does not do it, replace or at least add to the packing. Packing comes in different forms, but one that does not need a particular size is the string-like stuff.It's set right against the wall. Are these valves rebuildable?