Hey! Trying to rebuild this valve if possible and can't seem to find anything like it thus far. Only thing I can see on the brass valve is a large "K" and that is all I can see. The plastic cover pieces and knob have some small part numbers but can't seem to find much with those either. It is a single stem valve that has two perpendicular concave spring seals on each side. The valve body is open on both ends and seals on both ends of the stem. Any help would be awesome! Thanks!