Suitable for residential, commercial or industrial use with water or oil, this valve was specifically designed for filling and draining glycol/antifreeze from any point in a hydronic system. This approved Webstone valve is actuated by a blowout proof stem and features an adjustable packing gland. Solder joint temperature ratings are per ASME B16.18 Annex A for 95-5 solder. Other solder materials have lower pressure/temperature limits. Do not silver braze or overheat valves when soldering.